Rytigynia acuminatissima Robyns

Species

Angiosperms > Gentianales > Rubiaceae > Rytigynia

Characteristics

Shrub or small tree 1.8–9(–12, ? rarely–20) m. tall, ? sometimes ± scandent; branches mostly with dark purplish red bark often breaking down in small pieces to reveal a dark red-brown powdery surface; branchlets lenticellate, glabrous, ridged.. Leaf-blades oblong-elliptic, elliptic orobovate, 3–14.5(–15) cm. long, 0.6–6(–8) cm. wide, narrowly and distinctly acuminate at the apex, the actual tip usually narrowly rounded, rarely acute, cuneate at the base, glabrous save for ± sparsely pubescent to hairy domatia, slightly discolorous, costa and main nerves sometimes drying yellowish, margins sometimes crinkly on drying; petiole 3–6 mm. long; stipule-bases ovate, connate, 2–4 mm. long, densely pilose inside and ± persistent, with a long subulate ± laterally compressed deciduous appendage 3.5–7 mm. long.. Inflorescences (1–)2–6(–13)-flowered, often borne at leafless nodes; common peduncle usually short, 1–2(–10) mm. long; pedicels 1.5–8(–12 in fruit) mm. long; bracts ovate, 1.5–2 mm. long, forming an involucre ± 4 mm. wide.. Buds clavate, obtuse.. Calyx-tube 1–1.8 mm. long; limb 0.25 mm. long, hyaline, truncate or with traces of teeth.. Corolla whitish or pale green; tube sometimes urceolate, 2–3.2 mm. long, with a ring of deflexed hairs inside; lobes ovate-triangular, 2–3 mm. long, 1.2–1.5 mm. wide.. Ovary 3–4-locular; style 3 mm. long.. Fruit subglobose, 0.7–1.3 cm. long, 6–10 mm. wide according to number of pyrenes; pyrenes 1–3(–4), ± 7.5 × 4.5 × 3.5 mm., ± reniform, angled above the central internal notch.
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Growth form tree
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Foliage retention deciduous
Sexuality hermaphrodite
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Hardiness (USDA) 9-12

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Cultivation

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Distribution

Rytigynia acuminatissima world distribution map, present in Burkina Faso, Kenya, Rwanda, Tanzania, United Republic of, and Uganda

Identifiers

LSID urn:lsid:ipni.org:names:765702-1
WFO ID wfo-0000299105
COL ID 78Z9J
BDTFX ID -
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Wikipedia (EN)
Wikipedia (FR)

Synonyms

Vangueria acuminatissima Rytigynia acuminatissima

Lower taxons

Rytigynia acuminatissima subsp. acuminatissima Rytigynia acuminatissima subsp. pedunculata