Psychotria mahonii C.H.Wright

Species

Angiosperms > Gentianales > Rubiaceae > Psychotria

Characteristics

Tree 5–15(–24) m. tall or shrub 1.5–5 m. tall; stem soon rugose or striate or the bark sometimes corky and transverse fissured, glabrous or densely shortly velvety pubescent on the young shoots.. Leaf-blades elliptic, oblong-elliptic or obovate, 3–23 cm. long, 1.5–10 cm. wide, acuminate at the apex, cuneate to rounded at the base, glabrous or sometimes with a mixture of long multicellular and papilla-like hairs on the venation beneath and sometimes with what look like scattered minute pale scales beneath (actually stomata glistening), surface often rugulose beneath, rather thin to ± coriaceous; nodules absent but sometimes there are lesions and bumps which closely simulate them; domatia usually very marked, hairy; petiole 0.2–3.5 cm. long, glabrous to pubescent; stipules obovate, 0.4–1.7 cm. long, bilobed at the apex, the lobes 1–5 mm. long, glabrous or margins ciliate and basal parts pubescent, deciduous.. Flowers sweet-smelling, heterostylous, 5-merous, in much-branched panicles 4–18 cm. long; peduncle 1.5–8 cm. long, glabrous or densely covered with minute papilla-like hairs; secondary branches 0.4–1.4 cm. long, similarly hairy; pedicels 0–3 mm. long, usually glabrous or similarly velvety-papillose; bracts triangular to linear (very reduced leaves), 3–8 mm. long; other bracts and bracteoles small, usually margined with red hairs.. Calyx-tube obconic, 1 mm. long, glabrous to densely papillate; limb cupuliform, 1–1.5 mm. long, glabrous to velvety-papillate; lobes bluntly triangular or rounded, 0.5–0.75 mm. long, glabrous to densely velvety-papillate.. Corolla white, greenish or yellow, glabrous to densely velvety-papillose or pubescent outside; tube 4–6 mm. long; lobes elliptic-oblong, 2.75–3.5 mm. long, 1.3–1.5 mm. wide, incrassate and in-flexed at the apex, densely grey papillose inside.. Stamens with filaments 2–4 mm. long in short-styled flowers, 0.5 mm. long in long-styled flowers.. Style 2–3 mm. long in short-styled flowers, 6–7 mm. long in long-styled flowers; stigma-lobes 1–2 mm. long.. Drupes red, with 2-pyrenes, sub-globose, 5–6 mm. in diameter, scarcely grooved; pyrenes subglobose, 4 mm. long, 4.5 mm. wide, 2 mm. thick, ventral surface plane, dorsal surface slightly grooved.. Seeds dark blackish red, subglobose, about the size of the pyrenes, plane ventrally, with narrow deep dorsal fissures but not noticeably grooved; albumen ruminate.
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Leaf blades 3–23 x 1.5–10 cm., elliptic, oblong-elliptic or obovate, acuminate at the apex, cuneate to rounded at the base, glabrous or sometimes with a mixture of long multicellular and papilla-like hairs on the venation beneath and sometimes with what look like scattered minute pale scales beneath (actually stomata glistening) or sometimes quite densely ferruginous hairy, surface often rugulose beneath, rather thin to coriaceous; nodules absent but sometimes there are lesions and bumps which closely simulate them; domatia usually very marked, hairy; petiole 0.2–3.5 cm. long, glabrous to pubescent; stipules 0.4–1.7 cm. long, obovate, bilobed at the apex, the lobes 1–5 mm. long, glabrous or margins ciliate and basal parts pubescent, deciduous.
Flowers sweet-smelling, heterostylous, 5-merous, in much-branched panicles 4–18 cm. long; peduncle 1.5–8 cm. long, glabrous or densely covered with minute papilla-like hairs or with dense spreading ferruginous hairs; secondary branches 0.4–1.4 cm. long, similarly hairy; pedicels 0–3 mm. long, usually glabrous or similarly velvety-papillose; bracts 3–8 mm. long, triangular to linear (very reduced leaves); other bracts and bracteoles small, usually margined with red hairs.
Corolla white, greenish or yellow, glabrous to densely velvety-papillose or pubescent outside; tube 4–6 mm. long; lobes 2–3.5 x 1.3–1.5 mm. wide, elliptic-oblong, incrassate and inflexed at the apex, densely grey papillose inside.
Tree 5–15(24) m. tall or shrub 1.5–5 m. tall; stem soon rugose or striate or the bark sometimes corky and transversally fissured, glabrous or densely shortly velvety pubescent or grey to ferruginous hairy on the young shoots.
Calyx tube 1 mm. long, obconic, glabrous to densely papillate; limb 1–1.5 mm. long, cupuliform, glabrous to velvety-papillate; lobes 0.5–0.75 mm. long, bluntly triangular or rounded, glabrous to densely velvety-papillate.
Drupes red, with 2-pyrenes, 5–6 mm. in diam., subglobose, scarcely grooved; pyrenes 4 x 4.5 x 2 mm., subglobose, ventral surface plane, dorsal surface slightly grooved.
Seeds dark blackish red, subglobose, about the size of the pyrenes, plane ventrally, with narrow deep dorsal fissures but not noticeably grooved; albumen ruminate.
Style 2–3 mm. long in short-styled flowers, 6–7 mm. long in long-styled flowers; stigma-lobes 1–2 mm. long.
Stamens with filaments 2–4 mm. long in short-styled flowers, 0.5 mm. long in long-styled flowers.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 3.25 - 10.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses medicinal
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Psychotria mahonii world distribution map, present in Burkina Faso, Gabon, Kenya, Rwanda, Sudan, Tanzania, United Republic of, Uganda, Zambia, and Zimbabwe

Conservation status

Psychotria mahonii threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:762586-1
WFO ID wfo-0000286554
COL ID 4PPLR
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Psychotria bukobensis Psychotria ficoidea Psychotria mahonii Psychotria robynsiana Psychotria megistosticta Psychotria mushiticola Grumilea bequaertii Grumilea macrantha Grumilea megistosticta Grumilea punicea Psychotria mahonii var. puberula Psychotria mahonii var. pubescens Psychotria megistosticta var. puberula Psychotria megistosticta var. punicea Psychotria robynsiana var. glabra Psychotria robynsiana var. pauciorinervata Grumilea bequaertii var. pubescens