Tricalysia schliebenii Robbr.

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/35494/9932111

Conservation

VU - vulnerable

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation

Predicted extinction risk: threatened. Confidence: confident

Rubiaceae, D.M.Bridson & B.Verdcourt. Flora Zambesiaca 5:3. 2003

Morphology General Habit

Deciduous shrub or small tree 1–6 m tall, often with short congested lateral twigs, paired but sometimes with internodes reduced so as to appear as a whorl of 4twigs, or alternate; young stems with short hairs.

Morphology Leaves

Leaves deciduous, borne towards the apex of young stems or short twigs (above the fruit), dimorphic, those at start of new season’s growth smaller and shorter or broader; main blades 3.5–6.8 × 1–2.2 cm, narrowly elliptic or elliptic, acute or obtuse at the apex, acute at the base, drying olive-green or brown, scarcely paler below than above, papery when dry (described on field notes as coriaceous, subcoriaceous or sub-fleshy), sparsely pubescent on both surfaces or ± glabrous; midrib flat above, prominent and pale beneath, pubescent on both surfaces; lateral nerves in (3)4(5) main pairs; tertiary nerves obscure; domatia present as small tufts of hairs, or sometimes absent; petiole 1.5–3 mm long, pubescent; stipule limbs 1–2 mm long, ± truncate with awns (1)1.5–3 mm long, puberulous.

Morphology Reproductive morphology Inflorescences

Inflorescences sessile, 1–3(many)-flowered; bract and bracteoles cupular, the upper one the largest, 2- or 4-dentate, pubescent.

Morphology Reproductive morphology Flowers

Flowers 6-merous, sweet-scented.

Morphology Reproductive morphology Flowers Calyx

Calyx tube entirely hidden by upper bracteolar cup, with whitish or golden-yellow hairs; limb-tube 2–2.5 mm long, splitting into 3–4 lobes, sometimes thin in texture and tending to wither, often breaking off in fruit, pubescent outside, with dense silky hairs inside.

Morphology Reproductive morphology Flowers Corolla

Corolla white or cream-coloured, pubescent outside; tube 3–7 mm long, with long hairs near throat inside; lobes 4–4.5 × 2 mm, acuminate.

Morphology Reproductive morphology Flowers Androecium Stamens

Filaments 1.5–2 mm long; anthers 3–4.5 mm long.

Morphology Reproductive morphology Flowers Gynoecium Style

Style pubescent.

Morphology Reproductive morphology Flowers Pollen presenter

Pollen presenter held between the anthers; placenta with 2 collateral ovules.

Morphology Reproductive morphology Fruits

Fruit olive-green or brown when dry, c. 5 mm in diameter, glabrous, becoming pubescent towards top.

Morphology Reproductive morphology Seeds

Seeds (1)2 per locule, c. 4 mm long, segment-shaped, brown.