Jap.
J.Phycol.(Sorui)35:19‑21.March10，1987

TypificationofStreptophyllopsiskuroshioensis (SEGAWA)
KAJIMURA (Phaeophyta，Laminariaceae)*
MitsuoKA]lMURA

MarineBiologicalStalion，ShimaneUniversi砂，Kamo，Saigo，Oki‑gun，685JatanKAJIMURA，M.1987. Typi
ficationofStゆtothyllotsi
skuroshioen巾 (SEGAWA)KAJlM
URA(Phaeophyta，Laminariaceae)
.Jap.
J.P
hycol.3
5:19‑21.
Alectotypew
asselectf'dfromsyntypesforthebasionymofS，坤ゆ紗l
坤必 kuroshioensis(SEGAWA)
KAJIMURAwhichi
sadeep‑w
aterspecieso
fLam
inariaceaeinPhaeophytaendemictoJapan.

Words:Deφ， ・ 即'ater ゆ，ecies;endemics
pecies;Japan; Laminariaceae;Phaeophyta;
Streptophyllopsisku
roshioensis.

Kり l.
rdexedop.
砂llum(?
)kuroshio‑The basionym Hense SEGAWA was reported by SEGAWA(1948) from deep‑waters offIzu P
rov
incei
nShizuokaP
refectureonthePacifi
ccoast，hecouldnotcollectofHonshu. However伍cientspecimenso
fthisalgatomakea
sude
tailedstudy. 1 was fortu
nate enoughtodiscov
erthisalgagrowingi
nthed
ee
p‑re‑
w
ater
si
nt
he Oki Islands，Shimane Pollecte
d abundant s
pe
c
i‑
fectu
r
e，and 1 cmensuponwhich1madeadet
aile
dstu
dytr
e
pto・
andproposeda newgener
icnameSphyllψsis (KA]IMURA 1981). However，nov
alidatedtype specimen has been chosenuroshioensis(SEGAWA) KA]IMURA.
forS.kMaterialsandMethods
1 have chosen a lectotype from amongthethreesyntypesofthebasionymcollect‑，Izu Province on
ed by SEGAWA offToji9，1938whichar
edepositedattheApril2acultyofAgri‑InstituteofFisheries，Fculture， Kyushu University， Fukuoka，]apan. 1havefollowedArticle7andthe
Guide forthe Determination of Typestal.1
983).
(Vosse*ContributionNo.30fromOkiMarineBiological
Sation，ShimaneUniv
erstity

Typification

948SEGAWAdescribedthebasionvm
In1treptop4vllopsis kuros
hioensis (SEGAWA)ofSKA]IMURA asaresult ofhisobserv
ationsonthefou
rsteril
especimenscollecte
dfrom
deep‑wateroffIzuProvinceont
heP
aci
f
iccoas
tof middle Honshu. He considerededop4yllum，ita
sapossiblenews
peciesofHH. (?
)kuroshioense SEGAWA. SEGAWA re・marked that， The reasont
oplaceprov
i‑sionallythepr
esent new alga under theedophyllu
mis t
hati
thas somegenus H
resemblancet
oH.su
bsessilei
nt
headvancedstagebear
ingt
he bifurcatear
ms. The，however，differs distinct
Iypresentplantfrom thelatter by having theb
ifur
cate
arms character
istically metamorphosed asubsessil
e has
shown above. Namely，H. sth
earmswhicharedecumbent，somewhat，much concave. In H. kuroshioenselongsuch portionis very compact，metamor‑ashort，compressedphosedint
otwop
arts，stip
eandaglobularprotuberance. More.
，the secondary blades ofH. subsessi
leoversplitinto many segments and are muchconcaveneartheb
ase，
whileinH.kuroshio‑ense they are undivided and slight
Iycon‑
cave. Though there are such distinct
difference
sexisting between thesespecies，

KAl.IMURA，
M.

20，
回 一 欄 飾 帯 可 制 問 叩 品 自 ・ " ・ 向 朝 間輔が.
.
.
t.
.
・野m・4
惨.
.
厳司
駆品・k

旬以、加索現~ ~ .
気匂Fig.ト1 Thes叩p
巴C
印l
日m巴nof幻Streψ戸l~toψ
戸/わlりyμ
リJIlロψ
』戸J汀sis ku
r
叩os
必hμ
1叩o剖e
1
1日
5日 (βSEGAWA)KA.
JI日肌M叩H
山URAC口I
lect
陀
疋;
E
佼吋
db
yTAr、叫 K<王.
A011JU山1orthe"type"in1
956.
6，1939w
ithoutincli
catio
noflocalityanclselectelcb
ySEGAWAf
印 刷oe/lsis(SEGAWA)KA]IMURAcolectedb
ySEGAWA
Fig.2. Thelcesi
g
na
tedl
ectotypeo
fSir
ψlot
lr
yllotsisku
o庁 To
ji，IzuProv.
onAprli2
9，19
3
8目it seems thatt
he genera
1 appearanc巴 ofsuch advanced form bearing secondaryarms isthe same be
tween theses
p巴Cles.
Onthebasi
so
fmyo
bserv
ation
so
fnumer‑ous specimenso
fthi
sa1
gacollected from
dee
p‑
w
ater
si
nt
h巴 OkiI
s1an
ds，1c
ons
idert
hi
s a1ga to be fundament
a1ly different
from Hedot
hyllu
m (SETCHELL 1901) not
on1yi
nnothavin
ga10ngitudina1bifur
ca‑，buta1soi
nhaving bothtioni
ntheb
1adeaper巴nnia1prostratebranchwithperennia1
haptera and an annualb
1acle (K A]
IMURA
1981)
.
1consideredthis a
1gadistincttothealliecl gen巴raStrettψ砂llum (NAGAI 1
940)
andLaminaria(LAMOUROUX 1813).Str
ψto‑t.
f汐llotsishas a perennia1prostrate branchand hapter
a whereasStr
ettothyllu
mcloesnot. Rhizomebearing La
minar
ia(e.
g.L.
10ηgψes BORY)，which hav巴 th
isp
erenn
i
a
1日帽

pe
r
enn
i
a
1system a1sohavesever
a1distinct，stipes (SETCHELL and GARDNER 1925).
On th巴 otherhancl，this alga reseml
コlesStrettoρhyllu
mspirale (Y ENDO) MIYABE et
NAGAI int
he clecumben
tconditionofi
ts
weaklystipitate bladewhichsuggestedtheproposecl nam巴 Streþto戸/~J，lloþsis (KAJIMURA1981).
Thre巴 of the four specimens oft
hebasionym cit巴d by SEGAW A inhisproto‑logue were al colected by himselfoff
Toji，Izu Province on Apri
1 29，1938 but
1 couldnotfindt
he on巴 oft
hesefourillustr
ated by SEGAW A (1948，日g. トC).
1 found t
hat SEGAWA had failed todesignat巴 t
he ho
1otyp巴 oft
he basionym，
butSEGAWA choseas
pec
imen cole
cted byTANAKA onJune 6，1939 without inclic
a‑tion ofitslocality，fort
he type" which
was indi
catec
l on its herbarium s
hee
t by

T
ypi
ficat
i
onofStretloth)
llotsi
sku
ros
hioen
sisyp
especi‑ajapanesestampthatmeans t
twasconsideredmen"in 1956 (Fig.1). ItobechosenbySEGAWAprobablyf
ort
helectot
ypeofthebasionym，but1couldnot
consi
deri
tt
obev
alidatedasthelectotype
because SEGAWA apparently didnotciteitinhi
sprotologue (SEGAWA1948). Con‑sequentl
y 1 have chosen the lectotype
from among thethreesyntypes and itisde
positedint
hep
hycolog
ical herbarium
ofInstitut
e ofFisheries，Facult
y ofAgri‑culture， Kyushu University，Fukuoka，ja‑
pan.
Strettot砂llots
おkuroshioensis(SEGAWA) K
AJI‑，Mem. Fac. Sci.，Shimane Univ.
MURA
15:75‑87，
figs1‑27，1981.
Basionym: Hed~舛yllum (?
)kuroshioel
山SEGAWA，Jour.Fac.Agri.KyushuUniv.
9(1):59‑63，
fig.1，1948.
japanesename: Kuroshiome.
ac‑Lectotype: Institute of Fisheries，Fulty ofAgriculture，Kyushu University(T吋i，IzuProv.，Apr.29，1938).
Acknowledg
m.ents
Thepresentwr
iterwishestoacknowledge
hisg
reatindebtedne
sstoP
rofessorEmeritus
J.TOKIDA ofHokkaido Universityforhiscontinuous encouragement and to Dr.
L.D. DRUEHL，Department ofBiologicalSciences，Simon FraserUniversityforhis21helpfulsuggestions and critical readingofthe manuscript. He also would liketoexpresshisgratitudetoDr.H.TSUKAHARA
and Dr. T. OKUDA，Institute ofFisheries，FacultyofAgriculture，
KyushuUniversityfortheuse ofSEGAWA'S collections.
ReferencesK.
AJIMURA，M. 1
981. Str.
φtot紗llotsis anewgenusofLaminariaceae，Phaeophyta，from]
apan.
Mem.F
ac.Sci.，ShimaneUniv.1
5:7ι87.
，].V.1
813. Essaisur1esgenersdel
aLAMOUROUX
famille des thallassiophytes non articulees.
Ann. du Mus.d'Hist.Natu
rell
ep
ar1e
sp
ro・
fesesur
sdecetetablissement2
0:2
1‑47，1
1
5‑
1
39，
2
67‑
293.
NAGAI，M. 1
940. M
arinea1gaeoftheKurileIslands.1.].F
ac.A
gr.，HokkaidoImp.Univ.，
Sapporo46:1‑
137.
SEGAWA，S.1
948. A new L
aminariaceousalgafoundinIzu.].F
ac.A
gr.，KyushuUniv
.9:
59‑
63.
，v
V.A.1
901. Notesona
1gae.1. Zoe5:
SETCHELL
121‑
129.
，
W.A.andGARDNER，N.L. 1925.τneSETCHEL
L日ccoastofNor
出marinealgaeofthePaci
America. Part III. M
e1anophyceae. U
niv.
Ca1if.Publ.Bot.8:381‑
898.
，E.G.etal.Eds.1
98
3. I
nternation
a1GodeofVoss
BotanicalNomenclature，Adoptedbythe13th
Internationa1BotanicalCongress，Sydney，Au‑gust1
981.RegnumVeg.1
11. B
ohn，
Sche!
tema
&Holkema，Utrechtf
Antwcrpen;Dr.W.]u
叫 C，Pu
b1ishers，
TheHaguef
Boston.

梶村光男:クロシオメ(褐藻植物門，コンブ科)のタイプ標本の選定

basionymにおける選定基準標本を等価基準標本から(685隠岐郡西郷町大字加茂 194島根大学理学部附属臨海実験所)

日本間有積である深海性の褐藻，コンフ下けロシオメの選定した。