Bull. Natn. Sci. Mus., Tokyo, Ser. B, 31(4), pp. 133–159, December 22, 2005

New Infraspecific Taxa and a Hybrid of Vascular Plantsfrom Suzaki, Shimoda City, Central Japan
Fumihiro Konta1, Sadamu Matsumoto2, and Teruo Katsuyama3
1

Department of Botany, National Science Museum,
Amakubo 4–1–1,Tsukuba 305–0005 Japan
E-mail: konta@kahaku.go.jp
2
Tsukuba Botanic Garden, National Science Museum,
Amakubo 4–1–1, Tsukuba, 305–0005 Japan
3
Kanagawa Prefectural Museum of Natural History,
499, Iryuda, Odawara, Kanagawa, 250–0031 Japan

Abstract Sixteen new infraspecific taxa of vascular plants and a hybrid as well as a new rank aredescribed from Suzaki, Shimoda City, Izu Peninsula in this paper; Arisaema urashima H.Hara var.
gigantum Konta, Akebia trifoliata (Thunb.) Koidz. var. litoralis Konta & Katsuyama, Viburnum dilatatum Thunb. ex Murray var. litorale Konta & Katsuyama, Lysimachia clethroides Duby var.
crassifoliosa Konta, Campanula punctata Lam. subsp. punctata var. litoralis Konta & S. Matsumoto, Campanula puctata Lam. subsp. hondoensis Kitam. var. maritima Konta & S. Matsumoto,
Atractylodes japonica Koidz. ex Kitam. var. coriacea Konta & Katsuyama, Salvia japonica Thunb.
var. crassifolia Konta & S. Matsumoto, Viola sieboldii Maxim. var. litoralis Konta & Katsuyama,
Cirsium japonicum DC. var. maritima Konta & Katsuyama, Scilla scilloides (Lindl.) Druce var.
litoralis Konta, Hovenia dulcis var. crassifolia Konta, Euphorbia lasiocaula Boiss. var. maritima(Hurs.) S. Matsumoto & Konta Callicarpa japonica Thunb. var. luxurians Rehder forma albiflos
Konta, Allium shoenoprasum L. var. idzuense (H.Hara) H.Hara forma purpurea Konta, Lycorissanguinea Maxim. forma palensflos Konta, Vincetoxicum izuense forma chlorantum Katsuyama &Konta, and Hemerocallisfallaxlittorea Konta & S. Matsumoto.
Key words : Suzaki, vascular plants, new infraspecific taxa, new hybrid.

Introduction
Eighteen new and interesting taxa from a taxonomic viewpoint have been found during thecourse of a floristic investigation of vascularplants of Suzaki, Shimoda City, Izu Peninsula. In
this paper, 12 new varieties, 4 new forms, a new
hybrid and a new rank are reported as a continuation of a previous paper (Konta et al., 2005).
These taxa are as follows. Arisaema urashima
H. Hara var. gigantum Konta, Akebia trifoliata(Thunb.) Koidz. var. litoralis Konta & Katsuyama, Viburnum dilatatum Thunb. ex Murray var.
litorale Konta & Katsuyama, Lysimachia
clethroides Duby var. crassifoliosa Konta, Campanula punctata Lam. subsp. punctata
var. litoralis Konta & S. Matsumoto, Campanulapuctata Lam. subsp. hondoensis Kitam. var. maritima Konta & S. Matsumoto, Atractylodes
japonica Koidz. ex Kitam. var. coriacea Konta &Katsuyama, Salvia japonica Thunb. var. crassifolia Konta & S. Matsumoto, Viola sieboldii
Maxim. var. litoralis Konta & Katsuyama, Cirsium japonicum DC. var. maritima Konta & Katsuyama, Scilla scilloides (Lindl.) Druce var.
litoralis Konta, Hovenia dulcis var, crassifolia
Konta, Euphorbia lasiocaula Boiss. var. maritima (Hurus.) S. Matsumoto & Konta, Callicarpa
japonica Thunb. var. luxurians Rehder forma
albiflos Konta, Allium shoenoprasum L. var.
idzuense (H. Hara) H. Hara forma purpurea
Konta, Lycoris sanguinea Maxim. forma palensflos Konta, Vincetoxicum izuense forma chlorantum Katsuyama & Konta, and Hemerocallisfal-

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laxlittorea Konta & S. Matsumoto.
Materials and Methods
Materials were collected throughout Suzaki
Peninsula, Shimoda City, Shizuoka, including theSuzaki Imperial Villa, which is situated on theeastern coast of Suzaki Peninsula. Most herbarium specimens of flowering plants were collectedin their blooming or fruiting seasons. These specimens are preserved in TNS.

Description
1. Arisaema urashima H. Hara var. gigantum
Konta variety nov.
Affinis Arisaemati urashimate var. urashimate,
sed lamina valde giganto et lucido et coriaceo diversus.
Habit. Tuber depressed-globose, 9 cm in diameter, 6 cm in height, with 11 small lateral tubers on the upper part; leaf solitary, leaf sheath
20 cm long, the petiole terete, nearly erect, 65 cm
long, 2.2 cm in diameter at the base, the leaflets
17 with one deeply split into a large lobe and asmall one, oblong to oblanceolate, acuminate, thebiggest one 33 cm long, 13 cm wide, coriaceous,
0.2 mm thick, deep green, and concave alongveins on the adaxial side, lustrous, pale green on
the abaxial one; peduncle 15 cm long, the fruiting spadix club shaped, 5.5 cm long 4.5 cm in diameter with young fruits.
Habitat. Growing in groups on the floor of
mixed forest of evergreen and deciduous trees,ca. 3–5 m in height, on the top of a small hill protruding into the sea, 20 m above the sea level,
where strong sunlight through canopy of the trees
and warm temperature prevailing throughout theyear.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumeki-zaki, F.
Konta, 24477, I–VII (Holotype is composed of 7
sheets designated by I–VII Roman numerals following the collection number, TNS, Fig. 1, Fig.
8-1). F. Konta, 24342 (Paratype, TNS).
Japanese name. Oh-urashimaso.

Notes. Var. gigantum is characterized by distinctively large and thick, lustrous leaves. The
size of the largest leaflet of the typical variety is
distributed within 18 cm long and 3.5 cm wide,
the length of the petiole is distributed within 40
cm long, and the size of the tuber is distributed
within 6 cm in diameter.
2. Akebia trifoliata (Thunb.) Koidz. var.
litoralis Konta & Katsuyama var. nov.
Affinis Akebiae trifoliatae var. litorali, sedfolium valde magnifica et coriacea et lucida diversus.
Habit. and habitat. Glabrous woody climber
climbing up to the top of thicket or trees near thesea shore and cover them; leaves trifoliolate,leaflets very big on the upper part of vine covering surface of thicket or canopy of trees, ovate tonarrowly ovate, 10–13 cm long, 10–12 cm wide,
entire, coriaceous, 0.33–0.35 mm thick, deep
green, concave along veins, and lustrous on the
adaxial surface, margin abaxially recurved.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumeki-zaki, F.
Konta, 24492 (TNS, Fig. 2). F. Konta, 24484(Isotype, TNS).
Japanese name. Hama-mitsuba-akebi.
Notes. This new variety grows sunny placenear the sea shore. Leaves grow 2–3 times bigger
than the typical variety and thicker with lustrous
surface (Fig. 8-2).
3. Viburnum dilatatum Thunb. ex Murrayvar. litorale Konta & Katsuyama var. nov.
Affinis Viburno dilatato variety dilatato, sedlamina minusculo, luceo, crasso et paucihirto diversus.
Habit. Deciduous small shrub-like tree;
leaves elliptic to obovate, 3.5–9.0 cm long, 1.5–
6.0 cm wide, on the previous year’s branch, linear-oblong, 7.0–9.5 cm long, 2.5–3.5 cm wide, on
the hornotinous branch, coriaceous, lustrous,
concave along veins, and dark green on the adaxial side, pale green and glandular dotted on theabaxial one, low hair density on the both sides;
inflorescence 3–7(10) cm across, corolla 4–5

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 1.

Holotype of Arisaema urashima var. gigantum.

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Fig. 2.

Holotype of Akebia trifoliata var. litoralis.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 3.

Holotype of Viburnum dilatatum var. litorale.

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lobed, 4–6 mm in diameter, white, fragrant, stamens longer than corolla-lobes.
Habitat. Thickets on hill slopes near the sea
shore. Holotype is in the dense mixed thickets ofevergreen and deciduous trees of 2–4 m in heightin open valley facing the sea, where strong winds
usually blow hard from the sea to the top of thevalley. Specially strong winds by the typhoons inautumn in 2004 blew out almost leaves of the deciduous trees including this new plant.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta, 24304-a (Holotype, TNS, Fig. 3, Fig. 83). F.Konta 24304-b, (Isotype; TNS). F.Konta
23940, 24298, 24309, The Suzaki Imperial
Villa., Sotoura, F.Konta 24324 (Paratypus, TNS).
Japanese name. Sonare-gamazumi.
Notes. This new variety has taxonomic characteristics, which share linear-oblong leaves on
the hornotinous branch with forma heterophyllum (Nakai) Sugimoto, and smaller leaves withforma microphyllum (Nakai) Sugimoto. This newvariety is considered to be a littoral type ofViburnum dilatatum with characteristics of leavesof coriaceous, lustrous and dark green on the
adaxial side, almost glabrous condition, all ofwhich show adaptation one. Larger leaves of thisnew variety than those of forma microphyllum
seems also to show adaptation characteristic.
4. Lysimachia clethroides Duby var. crassifoliosa Konta var. nov.
AffinisLysimachiaeclethroidi
forma
clethroidi, sed lamina crassa et ovali diversus.
Habit. Stems erect, 35–80 cm high, terete,pubescent; leaves oblong to oblong-lanceolate orovate, 4–13 cm long, 2–6 cm wide, acuminate toattenuate-acuminate at apex, acuminate to shortstipe at base, entire, sometimes reflexed to theabaxial side, coriaceous, 0.3 mm thick, densely
pubescent on both sides, pubescences on the
adaxial side thicker, 0.3–0.5 mm long, more
densely on veins, those on the abaxial side thinner, and longer, 0.7–10.0 mm long.
Habitat. Growing in groups on weedy roadside bank and hill continuing form the bank,where strong winds often blow from the sea.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; The Imperial Villa,
F.Konta, 24430-a (Holotype, TNS, Fig. 4, Fig.
8-4). F.Konta, 24430-b,c,d (Isotypes, TNS).
F.Konta, 24395-a,b,s,d (Paratypes, TNS).
Japanese name. Isokaze-okatorano-o
5. Campanula punctata Lam. subsp. punctata var. litoralis Konta & S. Matsumoto var.
nov.
— Campanula punctata Lam. forma lucida
Sugimoto, in Pl. Izu. 181 (1962) nom. nud.
Affinis Campanulae punctatae subsp. punctatae var. punctatae, sed lamina coriacea et lucida et litorali distributionali diversus.
Habit. Stems erect, 30–80 cm high, terete,pubescent; cauline leaves ovate to triangular, 4–9
cm long, 2–4 cm wide, acuminate, irregularly obtuse-toothed, coriaceous, lustrous, deep green,and concave along veins on the adaxial side,
thinly pubescent on both sides, long petiolated on
the lower cauline, sessile on the upper one, calyx
segments deltoid-lanceolate with a reflexed appendage in the sinus; corolla white, with dark
spots.
Habitat. Growing in groups on open andweedy place near the sea shore.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta 24404-a (Holotype, TNS, Fig. 5, Fig. 85). F.Konta 24404-b (Isotype, TNS).
Japanese name. Hama-hotarubukuro.
Notes. Sugimoto noted that forma lucida is a
type of plants growing at beach with thick andlustrous leaves. We observed a great number ofthe same plants growing on hill slopes near thesea shore of Suzaki and recognized them var.
litoralis because of the reason that they shareboth morphological and geographical features.
6. Campanula puctata Lam. subsp. hondoensis Kitam. var. maritima Konta & S. Matsumoto var. nov.
— Campanula punctata Lam. subsp. hondoensis Kitam. forma hatsushimensis Sugimoto, in Pl.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 4.

Holotype of Lysimachia clethroides var. crassifoliosa.

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Fig. 5.

Holotype of Campanula puctata subsp. punctata var. litoralis.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 6.

Holotype of Campanula puctata subsp. hondoensis var. maritima.

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Izu. 181 (1962) nom. nud.
Affinis Campanulae punctatae subsp. hondoensi var. hondoensi, sed lamina coriacea et lucida et litorali distributionali diversus.
Habit. and habitat. Leaves lustrous and concave along veins on the adaxial side; calyx segments without a reflexed appendage in the sinuses; corolla white with dark spots; several groupsof plants of this forma growing on sandy beachin the Imperial Villa, 1 m above the sea level.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; The Imperial Villa,
F. Konta et al. 23813 (Holotype, TNS, Fig. 6,
Fig. 8-6).
Japanese name. Sonare-yamahotarubukuro.
Notes. Sugimoto noted that many individualsof this type of plants with lustrous leaves wereobserved in Hatsushima Island, a small island in
Atami City in Shizuoka Prefecture. We confirmed this type of plants near beach of Suzaki.
7. Atractylodes japonica Koidz. ex Kitam.
var. coriacea Konta & Katsuyama var. nov.
Affinis Atractylodi japonicae var. japonicae,
sed folio coriacea et lucida diversus.
Habit. and habitat. Perennial herb; stem
erect, 30–70 cm in height, hard, rather woody,
hairy; radicasl leaves withering before anthesis,
the cauline firmly coriaceous, long petiolate, oblong to pinnately 3–6 sected, 5–12 cm long, shortspinulos on margin, glabrous, lustrous, and concave along veins on the adaxial side, hirtellous
and tomentose on the abaxial; rather dry andweedy roadside bank, where strong winds fromthe sea often blow up.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; The Imperial Villa,
F.Konta 24369-a (Holotype, TNS, Fig. 7, Fig. 87). F.Konta 24369-b (Isolotype, TNS). F.Konta
23274 (Paratype, TNS).
Japanese name. Hama-okera.
Notes. This new variety is distinctive in the
thick and lustrous leaves.

8. Salvia japonica Thunb. var. crassifolia
Konta & S. Matsumoto var. nov.
Affinis Salviae japonicae var. japonicae, sedfolio crassa et lucida diversus.
Habit. and habitat. Perennial herb, stem
erect 40–70 cm in height; stem hirsute, leaves
simple or once or twice pinnate, opposite, serrate
at margin, coriaceous, almost glabrous with shorthairs on veins, and concave along veins on the
adaxial side, pubescent on the abaxial; flowers
purple; sunny and weedy place near beach or on
hills near the sea shore.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta 24459 (Holotype, TNS , Fig. 9, Fig. 151).
Japanese name. Sonare-akinotamuraso.
Notes. This new variety is distinctive in the
thick leaves.
9. Viola sieboldii Maxim. var. litoralis Konta& Katsuyama var. nov.
Affinis Viola sieboldo var. sieboldo, sed folio
crassa et lucida adaxiali et purpurascenti abaxiali
diversus.
Habit. and habitat. Small herb, leaves ovate
to ovate-cordate, 1.0–4.0 cm long, 0.7–3.0 cm
wide, obtuse, cordate at base, depressed-toothed,coriaceous, lustrous and deep green with thinshort, white hairs at margin on the adaxial, purplish on the abaxial side; flowers white with purple stripes inside. Muddy bank in evergreen forest or roadside bank, in light shade, near theseashore, ca. 10–40 m above the sea level.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta 24250 (Holotype, TNS, Fig. 10, Fig. 152), F.Konta 22799 (Paratype, TNS).
Japanese name. Sonare-fumotosumire.
10. Cirsium japonicum DC. var. maritimum
Konta & Katsuyama var. nov.
Affinis Cirsiuo japonico var. horrido, sed folio
coriaceo et lucido et bractea involucrali brevisetodiversus.
Habit. Stems erect, 40–80 cm high, terete,New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 7.

Holotype of Atractylodes japonica var. coriacea.

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Fig. 8. Habit of new varieties. 1. Holotype of Arisaema urashima var. gigantum. 2. Akebia trifoliata var. litoricola showing leaves lustrous and concave above. 3. Viburnum dilatatum var. litorale showing lustrous darkgreen leaves, concave lamina along veins, 4. Holotype of Lysimachia clethroides var. crassifoliosa showing
thick pubescent leaves. 5. Holotype of Campanula puctata subsp. punctata var. litoralis showing lustrous
leaves. 6. Campanula puctata subsp. hondoensis var. litoralis, which grow at beach showing lustrous leaves.
7. Holotype of Atractylodes japonica var. coriacea showing thick leaves.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 9.

Holotype of Salvia japonica var. crassifolia.

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Fig. 10.

Holotype of Viola sieboldii var. litoralis.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

pubescent; radical leaves ovate-oblong, 15–30 cm
long, pinnately cleft to toothed, long spines atmargin, 4–7 mm long, mid cauline leaves ovate to
oblong, pinnately cleft 8–20 cm long, acuminate,coriaceous, lustrous and deep green or fresh
green on the adaxial side, thinly pubescent on
both sides, long spines at margin, 4–7 mm long
(Fig. 15-3); spines on the tip of involcure bracts
short, 2–4 mm long, corolla purple.
Habitat. Growing at open and weedy placenear the sea shore.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta 24294 (Holotype, TNS, Fig. 11). F.Konta
22651, 23805, Katsuyama et al. 30528009(Paratypes, TNS).
Japanese name. Shiokaze-noazami.
11. Scilla scilloides (Lindl.) Druce var.
litoralis Konta var. nov.
Affinis Scillae scilloidi var. scilloidi, sed lamina ampla et crassa diversus.
Habit. and habitat. Bulbs ovoid-globose,
3.5–5.0 cm long, 2.0–3.5 cm wide, leaves linear
2–4 in number, 5.0–22.0 cm long, 5.0–13.0 mm
wide, 0.45–0.85 mm thick, smooth, flowers rosepurple, open and grassy place by beach, where is
exposed by strong sunlight and winds from thesea.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta 24507 (Holotype, TNS, Fig. 12, Fig. 154). F.Konta 23911, 23938 (Paratypes, TNS ).
Japanese name. Hama-tsurubo.
12. Hovenia dulcis Thunb. var. crassifolia
Konta var. nov.
Affinis Hovenia dulci var. dulci, sed folio crassa et lucida diversus.
Habit. Deciduous tree, leaves ovate, 5–16 cm
long, 5–10 cm wide, short acuminate, rounded atbase, coriaceus, 0.25–0.33 mm thick, deep green,
lustrous, almost glabrous, and concave alongveins on the adaxial side, pale green with brownhairs along vein on the abaxial side, flowers yellowish white.

147

Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Kakisaki, F.Konta
24448 (Holotype, TNS, Fig. 13, Fig. 15-5).
Japanese name. Atsuba-kenponashi.
Notes. Holotype is a tree, 8 m in height, 18
cm in trunk diameter growing in thickets by roadnear the sea, on hill slope at 30 m above the sea
level. This species is rarely distributed in lower
elevations of Izu Peninsula.
13. Euphorbia lasiocaula Boiss. var. maritima(Hurus.) S.Matsumoto & Konta stat. nov.
Euphorbia lasiocaula Boiss. var. lasiocaula f.
maritima (Hurus.) T. Kuros. et H. Ohashi in J.
Jap. Bot. 69: 273 (1994).
— Galarhoeus lasiocaulus (Boiss.) Hurusawa
var. lasiocaulus f. maritimus Hurusawa in J. Fac.
Sci. Univ. Tokyo III, 6: 264 (1954).
Affinis Euphorbiae lasiocaulae var. lasiocaulae, sed caule florenti curto ca. 30 cm et basi
repenti et lamina crasso diversus.
Japanese name. Hama-takatodai.
Notes. Several plants transplanted from theseashore of Suzaki to the Tsukuba Botanical
Garden of The National Science Museum, Tokyo
have kept their taxonomic features above citedthrough years. It is, therefore, concluded that
populations being distributed at the seashore of
Suzaki have both geographical and genetic variations which suggest more distinct taxonomic position.
14. Callicarpa japonica Thunb. var. luxurians
Rehder forma albiflos Konta forma nov.
Affinis Callicarpae japonicae var. luxurianti
forma luxurianti, sed flore alba diversus.
Habit. and habitat. Deciduous tree, 3 m inheight; leaves opposite, petioles 2–3 cm long,
blades oblong, acuminate, serrate, coriaceous, almost glabrous on the adaxial side, with small
stellate hairs on the abaxial side; cymes 5–7 cm
in diameter, more than 250 flowers per a cyme,
corolla white; edge of dense thickets near beach.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta et al. 24428-a (Holotype, TNS, Fig. 14,

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Fig. 11.

Holotype of Cirsium japonicum var. maritima.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 12.

Holotype of Scilla scilloides var. litoralis.

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Fig. 13.

Holotype of Hovenia dulcis var. crassifolia.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 14.

Holotype of Callicarpa japonica var. luxurians forma albiflos.

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Fig. 15. Habit of new taxa and counterparts 1. Holotype of Salvia japonica var. crassifolia showing thick darkgreen leaves with concave surface along veins on the adaxial side. 2. Viola sieboldii var. litoralis showing lustrous leaves. 3. Holotype of Cirsium japonicum var. maritima showing long spines on margin of leaves. 4.
Holotype of Scilla scilloides var. litoralis showing thick and wide leaves. 5. Holotype of Hovenia dulcis var.
crassifolia showing thick dark green leaves with concave parts along veins. 6. Holotype of Callicarpa japonica var. luxurians forma albiflos showing white flowers. 7. Flowers of Callicarpa japonica var. luxurians
forma luxurians showing pink flowers of common plants.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 16.

Holotype of Allium shoenoprasum var. idzuense forma purpuratum.

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Fig. 17.

Holotype of Lycoris sanguinea forma palensiflos.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Fig. 18.

Holotype of Vincetoxicum izuense forma chlorantum.

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Fig. 19.

Holotype of Hemerocallisfallaxlittorea.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

157

Fig. 20. Habit of new taxa and counterparts. 1. Flower of holotype of Lycoris sanguinea forma palensiflos. 2.
Flower of Lycoris sanguinea forma sanguinea. 3. Flower of Allium shoenoprasum var. idzuense forma
idzuense. 4. Flower of Allium shoenoprasum var. idzuense forma purpuratum. 5. Flower of Hemerocallis citrina var. vespertina. 6. Flower of Hemerocallis fulva var. littorea. 7. A flower of holotype of Hemerocallis
fallaxlittorea. 8. Another flower type of Hemerocallisfallaxlittorea (S. Matsumoto 208165).

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Fig. 15-6). F.Konta et al. 24428-a, b (Isolotype,
TNS).
Japanese name. Shirobana-oh-murasakishikibu.
Notes. This new forma is only distinctive inthe color of flowers (Fig. 15-7).
15. Allium shoenoprasum L. var. idzuense (H.
Hara) H. Hara forma purpuratum Konta
forma nov.
Allium shoenoprasum L. var. idzuense (H.
Hara) H. Hara, in J. Jpn. Bot. 55: 214 (1980) —Allium idzuense H. Hara, in J. Jpn. Bot. 49: 1(1974).
Affinis Allio shoenopraso var. idzuensi forma
idzuensi, sed corolla purpurato diversus.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta 24438 (Holotype, TNS, Fig. 16).
Japanese name. Izu-asatsuki.
Notes. H. Hara (1980) made a combinationof Allium shoenoprasum var. idzuense, based on
the type of Allium idzuense, which is characterized by whitish flowers as well as leafless scapebeing separated from a tuft of leaves, looser umbels, and less pointed tepals. The type was collected at the sea shore in The Suzaki Imperial
Villa. H. Hara (1980) noted ‘Having observed alarge number of individuals at the type locality, I
noticed that the flowering scape arises mostly
from the center of leaves and the flowers are purplish pink, and considered that it is better totreate the plant as a southern variety of A.
shoenoprasum L.’ A large number of individuals
were observed by Konta at more than 10 places
along the sea shore of Suzaki Peninsula in addition of The Suzaki Imperial Villa, and only twoplants with white flowers were recognized on thesmall rock protruded from the sea which is called
Tsumeki Island (Fig. 20-3). Konta considers thatthese white flowered plants should be distinguished as a forma level and called Shirobanaizu-asatsuki in Japanese. He checked carefully
holotype and confirmed that all flowers in three
inflorescences were strictly white color inyounger stage of flowering. It is concluded that ascientific name of Allium shoenoprasum var.
idzuense forma idzuense should be given to whiteflowered plants including the holotype. On theother hand, Allium shoenoprasum var. idzuense
forma purpuratum is given to the common plants
with purplish pink flowers under Japanese name,Izu-asatsuki (Fig. 20-4).
16. Lycoris sanguinea Maxim. forma palensflos Konta forma nov.
Affinis Lycoridi sanguinae forma sanguinae,
sed flore palescenti et rosea diversus.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; F.Konta 24513(Holotype, TNS, Fig. 17, Fig. 20-1).
Japanese name. Usuiro-kitsunenokamisori.
Notes. Lycoris sanguinea forma albiflora
Honda was reported from Shikoku with whiteflowers. Forma palensflora is characterized bypale pink flower. Only two plants were recognized in a community with about 50 individuals(Fig. 20-2) growing in groups by path at moist
place in light shade in a gorge, ca. 5 m above thesea level.
17. Vincetoxicum izuense T.Yamashiro forma
chloranthus Katsuyama & Konta forma nov.
Affinis Vincetoxico izuensi forma izuensi, sedflore chlorantho diversus.
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; The Imperial Villa,
S 12749 (Holotype, TNS, Fig. 18).
Japanese name. Midori-izukamomezuru.
18. Hemerocallisfallaxlittoralis Konta & S.
Matsumoto nothosp. nov.
Affinis Hemerocallidi citrinae var. vesperitinae, sed flore diuruna et aurantiaca diversus. Hybrida Hemerocallis citrina var. vesperitina (Fig.
20-5) et H. fulva var. littorea (Fig. 20-6).
Type. Japan. Honshu. Shizuoka: Suzaki, Shimoda City, Suzaki Peninsula; Tsumekizaki,
F.Konta 28390 (Holotype, TNS, Fig. 19), S.Matsumoto 208164, 208165, F.Konta 24483(Paratypes, TNS).
Japanese name. Usugi-hamakanzo.

New Infraspecific Taxa and a Hybrid of Vascular Plants from Suzaki

Notes. Holotype and paratypes (Fig. 20)
grow togather with parent plants at open hillslope facing the sea, 40 m above the sea level.
This hybrid has flowering in the daytime, flowers
have more yellow color than H. fulva var.
littorea, though degree of yellow is variable.
S.Matsumoto 208164 has yellowish flowers, but
208165 orange.

159

References
Konta, F., S. Matsumoto & T. Katsuyama, 2005. New andinteresting taxa of vascular plants from Suzaki, Shimoda City, Central Japan. Bull. Natn. Sci. Mus., Tokyo,
Ser. B., 31: 19–33.
Hara, H. 1980. Comments on the East Asiatic plants (7).
J. Jpn. Bot., 55: 17–22.