Tricalysia zambesiaca Robbr.

Species

Angiosperms > Gentianales > Rubiaceae > Tricalysia

Characteristics

Leaf blades not markedly dimorphic but the leaves at start of new season’s growth smaller, 3.5–9.5 × 1.3–4 cm, narrowly to broadly elliptic, subacuminate to shortly acuminate or occasionally obtuse to acute at the apex, cuneate at the base, drying green, subcoriaceous, glabrous, margins recurved; midrib impressed on upper surface, prominent beneath; lateral nerves in 3–5 main pairs; tertiary nerves reticulate, usually raised on both surfaces, domatia pocket-like or less often as shallow cavities, pubescent; petioles 2–4 mm long, thicker than midrib, grooved above, puberulous; stipules puberulous, limb 1–1.5 mm long sheathing, arista 1.5–4 mm long.
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Inflorescences subtended by leaves, 1-flowered or 2–3-flowered (i.e. 2 or 3 on a common peduncle, sometimes with one separately borne); peduncles 0.5–6 mm long; single-flowered inflorescence branches (3)5–13 (or up to 20 in fruit) mm long, glabrous or pubescent; bract and bracteoles cupular, c. 1.5 mm long, with 2 short lobes, glabrous or pubescent.
Calyx tube surrounded at the base by a bracteolar cup, glabrous; limb-tube (1.5)2 mm long, gradually widening and sometimes ribbed above (i.e. decurrent mid-nerve of teeth), sometimes splitting, puberulous, with appressed hairs or sparsely so, with silky hairs inside; lobes c. 0.25–1 mm long, subulate.
Corolla white; tube 7–10 mm long, glabrous outside, pilose inside; lobes 7–8 × 2.5–3 mm, acute or acuminate, glabrous or sometimes puberulous or ciliate towards the tip outside.
Shrub or small tree 1–4 m tall; young twigs sulcate, evenly puberulous-pubescent or bifariously puberulous or ± glabrous; older stems with pinkish-fawn bark.
Style 11–15(16) mm long, glabrous; pollen presenter arms held above or level with anther tips; ovules 2 per placenta.
Filaments c. 1 mm long; anthers inframedifixed, ¾ exserted not spreading, 3–5 mm long, shortly apiculate, glabrous.
Fruit red, 10 × 6–8 mm, ellipsoid, crowned by persistent calyx limb.
Seeds 1 per locule, semi-ellipsoid, hilum linear, curved.
Flowers 6-merous, sweet-scented.
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Growth form tree
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Foliage retention evergreen
Sexuality hermaphrodite
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Mature height (meter) 1.0 - 4.0
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Usage

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Cultivation

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Distribution

Tricalysia zambesiaca world distribution map, present in Zambia

Conservation status

Tricalysia zambesiaca threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:932388-1
WFO ID wfo-0000327413
COL ID 586QX
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Tricalysia zambesiaca