Monanthotaxis glaucifolia P. H. Hoekstra, Taxon 66: 14 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 glaucifolia

description: Monanthotaxis glaucifolia (Hutch. &amp; Dalziel) P.H.Hoekstra, Taxon 66: 14, 2017 Map 7H ≡ Oxymitra glaucifolia Hutch. &amp; Dalziel, Kew Bull.: 153, 1927; Richella glaucifolia (Hutch. &amp; Dalziel) R.E.Fr., Nat. Pflanzenfam., ed. 2, 17a (2): 139, 1959; Friesodielsia glaucifolia (Hutch. &amp; Dalziel) Steenis, Blumea 12: 359, 1964. Type. Nigeria. Cross River State; Oban, <i>Talbot P.A. 403</i>, 1911: holotype: BM[BM000843988]. Description. Liana, height unknown, d.b.h. unknown. Indumentum of simple hairs; old leafless branches pubescent to glabrescent, <b>young foliate branches densely pubescent with dense appressed to ascending light-brown hairs 0.2-0.5 mm long</b>. Leaves: petiole 4-7 mm long, 2-3 mm in diameter, densely pubescent with light-brown hairs, slightly grooved, blade inserted on top of the petiole; blade 11-25.8 cm long, 3.7-8.6 cm wide, oblong to obovate, apex acuminate, acumen 0.5-2.5 cm long, base subcordate, subcoriaceous to membranous, below sparsely pubescent when young and old, above glabrous when young and old, discolorous, whitish below; midrib impressed, above glabrous when young and old, below sparsely pubescent when young, glabrous when old; secondary veins 10 to 13 pairs, glabrous above; tertiary venation percurrent. Individuals bisexual; inflorescences ramiflorous on old leafless branches, leaf opposed to extra axillary. Flowers with 9 perianth parts in 3 whorls, <b>1 per inflorescence</b>; pedicel 5-21 mm long, ca. 1 mm in diameter, densely pubescent; in fruit 5-21 mm long, 2 mm in diameter; upper bract ca. 3 mm long, ca. 2 mm wide; sepals 3, valvate, free, ca. 5 mm long, ca. 7 mm wide, ovate, apex obtuse, 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, 30-35 mm long, 23-25 mm wide, ovate, apex, base truncate, margins flat, pubescent outside, sparsely pubescent to glabrous inside; inner petals 3, valvate, ca. 21 mm long, ca. 26 mm wide, rhombic, apex acute, base truncate, margins flat, pubescent outside, glabrous inside; <b>stamens 100 to 150</b>, in 5 to 6 rows, ca. 1 mm long, cuneate; connective truncate, glabrous; staminodes absent; carpels free, 45 to 50, ovary ca. 2 mm long, stigma globose, glabrous. Monocarps stipitate, stipes 3-4 mm long, ca. 2 mm in diameter; monocarps ca. 8, 15-26 mm long, 9-10 mm in diameter, ellipsoid, apex rounded to apiculate, pubescent, smooth, constricted around seeds when more than 1, color unknown; seeds 1 to 2 per monocarp, ca. 10 mm long, ca. 8 mm in diameter, ellipsoid; aril absent. Distribution. Known from Nigeria and Cameroon; in Cameroon known from the South-West region. Habitat. A rare species, in submontane primary forest. Altitude 950 m a.s.l. Local and common names known in Cameroon. None recorded. Preliminary IUCN conservation status. Endangered (EN) (Hoekstra et al. 2021). Uses in Cameroon. None reported. Notes. <i>Monanthotaxis glaucifolia</i> resembles <i>M. dielsiana</i> and <i>M. enghiana</i> by the shape of its leaves (oblong to obovate) and the largish flowers. It differs from <i>M. dielsiana</i> by having more than 100 stamens per flower, and by light brown hairs on the young foliate branches, while <i>M. dielsiana</i> has orange-brown hairs and about 65 stamens per flower. <i>Monanthotaxis enghiana</i> differs from <i>M. glaucifolia</i> by its densely pubescent branches and leaves with long erect hairs; furthermore, <i>M. enghiana</i> generally has 2 to 5 flowers per inflorescence and <i>M. glaucifolia</i> only one. It is possible that <i>M. enghiana</i> and <i>M. glaucifolia</i> are synonymous, and Hoekstra et al. (2021) suggested that the latter could merely be a higher altitude variant of the former. However for now, both species are retained before more detailed studies are done (Hoekstra et al. 2021). Specimens examined. <b>South-West Region</b>: Mount 4.78°N, 9.683°E, <i>26 November 1999</i>, <i>Cheek M.</i> 10154 (K,MO,WAG,YA); AyinKeh 3 km north of Ngomboku, 4.93°N, 9.731°E, <i>17 December 1999</i>, <i>Ghogue J.-P.</i> 500 (K,P,WAG,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 205-206, DOI: 10.3897/phytokeys.207.61432
description: {"references": ["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"]}