Tricalysia griseiflora K.Schum.

Species

Angiosperms > Gentianales > Rubiaceae > Tricalysia

Characteristics

Leaves dimorphic, blades at start of new season’s growth (and persisting at old/new season junction) developing as a series, first rudimentary, then 2–3 elliptic or obovate pairs, increasing in size up the stem; main blades (1) 5–10.5(12) × (0.7)1.5–3.5(4.5) cm, narrowly elliptic, oblong-elliptic or oblanceolate, acute or obtuse at the apex, cuneate at the base, margins recurved, subcoriaceous, drying bronze-coloured or red-brown on upper surface, pale olive-green beneath, glabrous above, finely pubescent beneath; midrib drying cream-coloured or yellowish, ± flat above, prominent beneath glabrous or pubescent; lateral nerves in 4–6 main pairs; tertiary nerves rather coarsely reticulate, raised above, apparent but not conspicuous beneath; domatia absent or present as tufts of hairs or shallow pits; petioles 1–4 mm long, puberulous or sparsely so; stipules pubescent or glabrescent; limb sheathing, 1–2 mm long, triangular with arista 1–2 mm long.
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Inflorescences borne at naked nodes or very occasionally subtended by leaves, 1–8-flowered, subsessile; intermediate inflorescence branches present in many-flowered inflorescences; single-flowered inflorescence branches reduced or rarely present (up to 1 mm long in fruit); bract and bracteoles cupular, 1–1.5 mm long, with 2 very short lobes, pubescent.
Corolla white or cream-coloured; tube 4–6 mm long, widening to 1.5–2 mm at top, glabrous but becoming pubescent towards top outside; lobes 3–4(5) × 1–1.5 mm, ± truncate, pubescent except for bud-overlap-zone outside, glabrous above.
Deciduous multi-stemmed subshrubs (? rhizomatous), shrubs or small trees, 0.4–3(4) m tall; young stems puberulous or puberulous-pubescent; older stems with brown bark, later much fissured.
Calyx tube surrounded by cupule except very top, glabrous; limb-tube 1.5–1.7 mm long, often split, puberulous outside, with silky hairs inside; lobes very reduced, up to 0.25 mm long.
Filaments 1.25–2.5 mm long; anthers ± medifixed, 3–4 mm long, not apiculate, glabrous but sometimes with a few hairs at apex.
Style 8–9 mm long, glabrous; pollen presenter arms 2–3 mm long, fully exserted; ovules 2 per placenta.
Flowers 6(7)-merous, sweet-scented (also described as sickly or unpleasant), subsessile.
Seeds 1(2) per locule, c. 7 mm long, hemispherical, with linear hilar groove.
Fruit red, 6–8 mm in diameter, globose, crowned by persistent calyx limb.
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Cultivation

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Distribution

Tricalysia griseiflora world distribution map, present in Angola and Zambia

Identifiers

LSID urn:lsid:ipni.org:names:768047-1
WFO ID wfo-0000327250
COL ID 586M9
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Tricalysia griseiflora

Lower taxons

Tricalysia griseiflora var. benguellensis Tricalysia griseiflora var. griseiflora Tricalysia griseiflora var. barotseana