Agelanthus bipartitus Balle ex Polhill & Wiens

Flora Zambesiaca. Vol. 9, Part 3. Polygonaceae-Myriaceae. Pope GV, Polhill RM, Martins ES. 2006.

Type

Type from Tanzania.

Morphology Reproductive morphology Flowers Gynoecium Style

Style red, slender, slightly expanded opposite filaments, narrowed to a neck 3 mm long; stigma 0.7–0.8 mm across, capitate

Ecology

Montane forest on the Nyika Plateau; 2100–2250 m; on various hosts; flowering January–August.

Note

Easily recognized by the calyx split around the base by the expanding corolla-base and retained as a dried ring around the narrow part of the corolla tube.

Distribution

Also in the Southern Highlands of Tanzania. MAL N Malawi

Morphology General Habit

Small shrub, spreading to 1 m; branchlets scurfy at tips but soon thickened, grey, glabrescent and prominently lenticellate. Small shrub, spreading to 1 m; branchlets scurfy at tips but soon thickened, grey, glabrescent and prominently lenticellate

Morphology Leaves

Leaves alternate; petiole 1–5 mm long; lamina thinly coriaceous, deep green, 4–8 × 2–3 cm, elliptic to oblong-elliptic, obtuse to rounded at apex, cuneate at base, few-nerved, the second pair ascending almost to apex (sometimes scarcely apparent). Leaves alternate; petiole 1–5 mm long; lamina thinly coriaceous, deep green, 4–8 × 2–3 cm, elliptic to oblong-elliptic, obtuse to rounded at apex, cuneate at base, few-nerved, the second pair ascending almost to apex (sometimes scarcely apparent)

Morphology Reproductive morphology Inflorescences

Umbels 1–several, sessile, 2–4-flowered; bract 2–3 mm long, cupular, slightly lacerate, sparsely ciliolate, sometimes with a small limb. Umbels 1–several, sessile, 2–4-flowered; bract 2–3 mm long, cupular, slightly lacerate, sparsely ciliolate, sometimes with a small limb

Morphology Reproductive morphology Flowers Receptacle

Receptacle 2 mm long. Receptacle 2 mm long; calyx 3–5 mm long, tubular, shortly toothed, ciliate, circumscissile near base as corolla swells, the detached part persistent as a ring on the corolla tube

Morphology Reproductive morphology Flowers Calyx

Calyx 3–5 mm long, tubular, shortly toothed, ciliate, circumscissile near base as corolla swells, the detached part persistent as a ring on the corolla tube.

Morphology Reproductive morphology Flowers Corolla

Corolla 3.2–4.2 cm long, tube red, lobes yellow over vents, with darker red tip; apical swelling of bud slight, 5 mm long; basal swelling 4 × 3–3.5 mm, globose-ellipsoid; lobes erect, 7–8 mm long, linear-oblanceolate in upper two-thirds to three-quarters. Corolla 3.2–4.2 cm long, tube red, lobes yellow over vents, with darker red tip; apical swelling of bud slight, 5 mm long; basal swelling 4 × 3–3.5 mm, globose-ellipsoid; lobes erect, 7–8 mm long, linear-oblanceolate in upper two-thirds to three-quarters

Morphology Reproductive morphology Flowers Androecium Stamens

Stamen filaments orange-yellow, inflexed, last 1 mm hardened, paler, thickened; tooth 0.2–0.3 mm long; anthers 2.5 mm long. Stamen filaments orange-yellow, inflexed, last 1 mm hardened, paler, thickened; tooth 0.2–0.3 mm long; anthers 2.5 mm long

Morphology Reproductive morphology Flowers Gynoecium Pistil

Style red, slender, slightly expanded opposite filaments, narrowed to a neck 3 mm long; stigma 0.7–0.8 mm across, capitate.

Morphology Reproductive morphology Fruits

Berry not seen. Berry not seen.

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