Psychotria megalopus Verdc.

First published in Kew Bull. 30: 259 (1975)
This species is accepted
The native range of this species is Gabon, Tanzania. It is a shrub or tree and grows primarily in the seasonally dry tropical biome.


Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

Morphology General Habit
Spindly laxly branched shrub or small tree 2.4–10 m. tall; stems glabrous and longitudinally wrinkled save for long hairs at the nodes within the stipules; old petiole scars very evident.
Morphology Leaves
Leaf-blades oblong to obovate or obovate-oblanceolate, 28–43 cm. long, 9.6–24 cm. wide, very rounded at the apex, narrowly cuneate at the base, rather thick, glabrous, shining beneath in the living state; midnerve often reddish; lateral nerves numerous, 12–27 pairs, the venation closely but ± obscurely reticulate; a well-marked intramarginal nerve present; petioles often very stout, 1.5–6 cm. long including a portion bordered by the narrowly decurrent base of the lamina; stipules oblong, 2.6 cm. long, 2.4 cm. wide, probably acuminate but often split at the apex, very soon deciduous.
Morphology Reproductive morphology Flowers
Flowers in very condensed heads, 4.5–9 cm. long, 3.5–10 cm. wide, the main enveloping bracts large, forming an entirely closed cup which bears a strong median keel in the direction of the longest dimension, which is decurrent on to the thickened peduncle but absent from the central upper part; the flowers are gathered into 3–10 groups within the cup and become more separate after the main bracts have deteriorated; secondary bracts linear-oblong to almost round, the narrowest next to the flowers, 2–2.5 cm. long, 0.6–2.5 cm. wide, the margins incurved, with long hairs outside at the apex, often in dried material the corollas appearing to emerge from holes in a surface made up of hairy bracts; peduncles attaining 1.8 m. in length, pinky red, eventually resting on the ground but often only 12–60 cm. long, up to 4 cm. wide at the apex and ± 2-angled.
Morphology Reproductive morphology Flowers Calyx
Calyx-tube ovoid or ellipsoid, glabrous, 1–2 mm. long, 0.7 mm. wide, ribbed; limb 3–5 mm. long, toothed at the apex, the lobes irregular or triangular, 2–5 mm. long, with long hairs outside at the apex.
Morphology Reproductive morphology Flowers Corolla
Corolla white; tube funnel-shaped, 1.2–1.3 cm. long, cylindrical below, 3 mm. wide at the top, 4 mm. at the bottom, glabrous outside, usually with top half hairy inside; lobes 6, green tinged, lanceolate or ovate, 4–6 mm. long, 2–2.3 mm. wide.
Morphology Reproductive morphology Flowers Disc
Disc 2.5 mm. long, wrinkled.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers 3.8 mm. long, exserted so that bases are just included in the tube.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Ovary 3-locular; style 4.5 mm. long, with 3 stigma-arms.
Morphology Reproductive morphology Fruits
Pyrenes straw-coloured, ellipsoid in section or oblong, 8.5–9.5 mm. long, 3.5–5 mm. wide, 2.5 mm. thick, compressed, trigonous, grooved on both surfaces.
Morphology Reproductive morphology Seeds
Seeds dark red, ellipsoid in section, 6.5–7 mm. long, 2.2–3.6 mm. wide, 1.5–2 mm. thick, grooved on both surfaces, rugulose.
Evergreen forest, including riverine, particularly with Allanblackia, Chrysophyllum, Macaranga, Bridelia, Phoenix and bamboo; 1140–1850 m.
T6 T7 not known elsewhere

IUCN Red List of Threatened Species

VU - vulnerable


  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew
  • IUCN Categories

    • IUCN Red List of Threatened Species
  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at and
    • © Copyright 2022 World Checklist of Vascular Plants.
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at and
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants.