Monanthotaxis montana P. H. Hoekstra, Taxon 66: 15 2017
Creators: name: Couvreur, Thomas L. P.
name: Dagallier, Leo-Paul M. J.
name: Crozier, Francoise
name: Ghogue, Jean-Paul
name: Hoekstra, Paul H.
name: Kamdem, Narcisse G.
name: Johnson, David M.
name: Murray, Nancy A.
name: Sonke, Bonaventure
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Magnoliales
Annonaceae
Monanthotaxis
Monanthotaxis montana

description: Monanthotaxis montana (Engl. &amp; Diels) P.H.Hoekstra, Taxon 66: 15, 2017 Figs 59, 64; Map 8F ≡ Unona montana Engl. &amp; Diels, Notizbl. Königl. Bot. Gart. Berlin 2: 296, 1899; Oxymitra montana (Engl. &amp; Diels) Sprague &amp; Hutch., Bull. Misc. Inform. Kew: 155, 1916; Richella montana (Engl. &amp; Diels) R.E.Fr., in Prantl. &amp; Engler Nat. Pflanzenfam. ed. 2, 17a (2): 139, 1959; Friesodielsia montana (Engl. &amp; Diels) Steenis, Blumea 12: 360 1964. = Unona glauca Engl. &amp; Diels (non Zipp.), Notizbl. Königl. Bot. Gart. Berlin 2: 296, 1988; Oxymitra soyauxii Sprague &amp; Hutch., Bull. Misc. Inform. Kew 6: 155, 1916; Richella soyauxii (Sprague &amp; Hutch.) R.E.Fr., in Prantl. &amp; Engler Nat. Pflanzenfam., ed. 2, 17a (2): 139, 1959. - Friesodielsia soyauxii (Sprague &amp; Hutch.) Steenis, Blumea 12: 361, 1964. Type. Gabon. Estuaire, Sibange farm, Soyaux H. 203, 6 Feb 1881: lectotype, designated by Guo et al. (2017b), p. 15: B[B100153059]; isolectotype: K[K000198946]. = Oxymitra mortehanii De Wild., Pl. Bequaert. 1: 472, 1922. Type. Democratic Republic of the Congo. Mongala, Dundusana, <i>Mortehan M.G. 512</i>, Sep 1913: holotype: BR[BR000008800459, BR000008800060, BR000008800787]. Type. Cameroon. Central Region; Yaoundé-Station, <i>Zenker, G.A. 431</i>, 11 Jan 1894: holotype: B[B100153061]. Description. Shrub to liana, up to 7 m tall, d.b.h. up to 1 cm. Indumentum of simple hairs; old leafless branches glabrescent, young foliate branches densely pubescent with dense appressed to ascending reddish brown hairs 0.2-0.3 mm long. Leaves: petiole 3-6 mm long, 1-2 mm in diameter, densely pubescent, slightly grooved, blade inserted on top of the petiole; blade 5.5-20 cm long, 2.8-6.7 cm wide, elliptic to oblanceolate, apex acuminate to acute, acumen 1.5 cm long, base subcordate, subcoriaceous, below pubescent when young and old, above sparsely pubescent to glabrous when young and old, <b>grey when dried</b>, discolorous, whitish below; midrib impressed, above sparsely pubescent when young, glabrous when old, below pubescent when young and old; secondary veins 7 to 13 pairs, glabrous above; tertiary venation percurrent. Individuals bisexual; inflorescences ramiflorous on old leafless branches, extra axillary. Flowers with 9 perianth parts in 3 whorls, 1 to 4 per inflorescence; pedicel 13-33 mm long, 0.5-1 mm in diameter, sparsely pubescent; in fruit 28-38 mm long, 0.5-1 mm in diameter; basal bract ca. 1 mm long, ca. 1 mm wide; upper bract ca. 1 mm long, ca. 1 mm wide; sepals 3, valvate, free, reflexed at anthesis, <b>1-2 mm long</b>, 1-2 mm wide, broadly elliptic to broadly ovate, apex acute, base truncate, densely pubescent outside, glabrous inside, margins flat; petals free, outer petals longer than inner, inner petals entirely covered in bud; outer petals 3, 6-15 mm long, 5.4-6.7 mm wide, ovate, apex obtuse, base truncate, yellow-green and red at the base, margins flat, sparsely pubescent outside, pubescent with a glabrous base inside; inner petals 3, valvate, 5.8-7.5 mm long, 4.5-9 mm wide, cordate, apex obtuse, base truncate, margins flat, glabrous outside, glabrous inside; <b>stamens 36 to 48, in 5 rows</b>, ca. 1 mm long, linear to oblong; connective truncate, glabrous; staminodes absent; carpels free, 11 to 14, ovary 1-2 mm long, stigma globose, glabrous. Monocarps stipitate, stipes 3-8 mm long, 2-3 mm in diameter; monocarps 4 to 11, 12-33 mm long, 4-9 mm in diameter, moniliform, ellipsoid, apex rounded to apiculate, pubescent to glabrous, verrucose, constricted around seeds when more than 1, yellow with red stripes or dull red when ripe; seeds 1 to 3 per monocarp, 11-12 mm long, 5-6 mm in diameter, ellipsoid; aril absent. Distribution. A central African species from Cameroon to the Democratic Republic of the Congo, Central African Republic and Angola; in Cameroon known from the Central and South-West regions. Habitat. A rare species in Cameroon, only known from two collections; in primary or old secondary rain forests, swamp forests, gallery forests, on rocky soil and along river banks. Altitude: 500-700 m a.s.l. Local and common names known in Cameroon. None recorded. Preliminary IUCN conservation status. Least Concern (LC) (Hoekstra et al. 2021). Uses in Cameroon. None reported. Notes. <i>Monanthotaxis montana</i> is distinguished by the upper side of the leaf blade which is grey in dried material, sepals that are small (1-2 mm long) and reflexed at anthesis, and stamens 36 to 48 in 5 rows. Specimens examined. <b>Central Region</b>: Yaoundé, 3.86°N, 11.51°E, <i>1894</i>, <i>Zenker G.A.</i> 431 (B). <b>South-West Region</b>: Njonji, 4.13°N, 9.033°E, <i>17 April 1997</i>, <i>Nning J.</i> 360 (K,YA).
description: Published as part of <i>Couvreur, Thomas L. P., Dagallier, Leo-Paul M. J., Crozier, Francoise, Ghogue, Jean-Paul, Hoekstra, Paul H., Kamdem, Narcisse G., Johnson, David M., Murray, Nancy A. &amp; Sonke, Bonaventure, 2022, Flora of Cameroon - Annonaceae Vol 45, pp. 1-532 in PhytoKeys 207</i> on pages 221-223, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["Guo, X, Hoekstra, PH, Tang, CC, Thomas, DC, Wieringa, JJ, Chatrou, LW, Saunders, RM, 2017b. Cutting up the climbers: Evidence for extensive polyphyly in Friesodielsia (Annonaceae) necessitates generic realignment across the tribe Uvarieae. Taxon 66: 3 - 19, DOI: https://doi.org/10.12705/661.1", "Hoekstra, PH, Wieringa, JJ, Maas, JM, Chatrou, LW, 2021. Revision of the African species of Monanthotaxis (Annonaceae). Blumea 66: 107 - 221, DOI: https://doi.org/10.3767/blumea.2021.66.02.01"]}