Compilation
Anthospermum whyteanum
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Name
Identification
Anthospermum whyteanum Britten [family RUBIACEAE ] (stored under name);
Related name
- Anthospermum whyteanum
Flora
Entry for ANTHOSPERMUM whyteanum Britten [family RUBIACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, page 1, (1976) Author: B. VERDCOURT
Names
ANTHOSPERMUM whyteanum Britten [family RUBIACEAE], in Trans. Linn. Soc., ser. 2, 4:16 (1894); T.T.C.L.: 483 (1949); Brenan in Mem. N.Y. Bot. Gard. 8: 455 (1954). Type: Malawi, Mlanje Mt., Whyte 48 (BM, holo.!)
ANTHOSPERMUM albohirtum Mildbr. [family RUBIACEAE], in N.B.G.B. 15: 637 (1941). Type: Tanzania, Matengo Highlands, Lupembe Mt., Zerny 269 (W, holo.!)
Information
A much-branched shrub or subshrub (0.25–)0.6–2.4 m. tall, similar in habit to the next species in most respects; stems densely covered with much coarser spreading hairs but ultimately glabrescent and the epidermis often peeling on the older stems. Leaves verticillate in whorls of 3 and also with short axillary shoots giving an appearance of more; blades elliptic or narrowly ovate-lanceolate to linear-lanceolate, 0.3–1.3 cm. long, 1–3 mm. wide, apiculate, narrowed to the base, strongly revolute, mostly densely covered with spreading hairs; stipules with a single seta 2–3 mm. long from a base 0.5 mm. long; petioles obsolete. Flowers in sessile axillary clusters, unisexual and dioecious, apparently single between a pair of bracts and a pair of bracteoles. Calyx-tube obconic, 1.5 mm. long, hairy, the hairs upwardly directed and apical ones 0.5 mm. long beyond the tip of the calyx, hiding the triangular 0.3 mm. long lobes. Corolla greenish white, white, pink or yellowish, sometimes marked dull purple; tube 2 mm. long in ♂ flowers, 0.5 mm. long in ♀ flowers; lobes oblong-lanceolate or oblong-elliptic in ♂ flowers, 2.8 mm. long, 0.8–1.1 mm. wide, oblong-lanceolate and smaller in ♀ flowers, 0.6–0.7 mm. long, 0.2 mm. wide. Filaments exserted 2 mm. in ♂ flowers. Styles rudimentary, free, ± 2 mm. long in ♂ flowers, 8.5 mm. long and joined at the base for 2 mm. in ♀. Fruit hairy or glabrous.
Range
DISTR. T8
Altitude range
1860 m.
Distribution
TANZANIA Songea District Matengo Hills, Lupembe Hill, 10 Jan. 1956, S. Paulo in Milne-Redhead & Taylor 8177! & same locality, 3 Jan. 1936, Zerny 269!
Distribution (external)
Mozambique
Malawi
Zambia
Rhodesia
Notes
Published and unpublished records of this species from East Africa probably all refer to A. usambarense; I have seen only the gatherings cited above and it must be presumed at the extreme north of its range in this locality. In Rhodesia the species is usually a small subshrub from a very woody rootstock. Brenan & Greenway 8235 (Tanzania, Mbeya–Sao Hill road, 29 Oct. 1947) has the habit of A. whyteanum and stipules with a single seta, but the stems have the indumentum of A. usambarense and the leaves are glabrous; moveover the fruits are not crowned by the persistent calyx-lobes.