Rytigynia umbellulata Robyns

Species

Angiosperms > Gentianales > Rubiaceae > Rytigynia

Characteristics

Scrambling or erect shrub or small tree 1–5(–9) m. tall, often deciduous, the branches usually slender; bark grey-black; branchlets grey to purple-brown, with or without lenticels, glabrous or pubescent or setulose on young parts.. Leaf-blades oblong-elliptic to ovate or lanceolate, 1.8–11 cm. long, 0.7–5 cm. wide, acuminate at the apex, the tip ± rounded, broadly cuneate to rounded at the base, glabrous save for barbellate domatia or sparsely to fairly densely adpressed pilose or setulose particularly on the midrib, usually distinctly thin; petiole 2–7 mm. long; stipules with triangular-truncate bases 1.5–3 mm. long, ± connate at the base, scarious but sometimes becoming woody, ± villous inside, with a subulate appendage 2–8 mm. long or rarely ± lacking.. Cymes umbel-like, 2–8-flowered, often produced with young leaves; peduncle 0.5–4 mm. long or ± obsolete; pedicels 2–10 mm. long; bracteoles 1–2 mm. long, connate to form a scarious involucre.. Buds rounded to subapiculate at the apex.. Calyx-tube 1–1.5 mm. long, the limb 0.3 mm. long, truncate or obscurely toothed, scarious.. Corolla creamy, yellow or greenish white; tube 2.5–4 mm. long, with a ring of deflexed hairs within; lobes triangular or oblong, 1.8–3 mm. long, subapiculate.. Ovary (4–)5-locular; style 4–4.5 mm. long; stigma described as yellow below, green in middle and blue on top, coroniform, 5-lobed.. Fruit black, subglobose, 6–9 mm. diameter, with (2–)4–5 pyrenes; pedicels 7–12 mm. long; pyrenes mostly strongly pitted.
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Leaves 1.8–11 × 0.7–5 cm, oblong-elliptic to ovate or lanceolate, acuminate at the apex with the tip ± rounded, broadly cuneate to rounded at the base, glabrous save for barbellate domatia, or sparsely to fairly densely appressed pilose or setulose, particularly on the midrib, usually distinctly thin; petiole 2–7 mm long; stipules ± connate at the base, 1.5–3 mm long, with triangular-truncate bases, scarious but sometimes becoming woody, ± villous inside, with a subulate appendage 2–8 mm long or rarely lacking.
Scrambling or erect shrub or small tree 1–5(9) m tall, often deciduous, the branches usually slender; bark grey-black; branchlets grey to purple-brown, with or without lenticels, glabrous or pubescent, or setulose on young parts.
Cymes umbel-like, 2–8-flowered, often produced together with young leaves; peduncle 0.5–4 mm long, or ± obsolete; pedicels 2–10(15) mm long; bracteoles 1–2 mm long, connate to form a scarious involucre.
Corolla rounded to sub-apiculate at the apex in bud; creamy, yellow or greenish-white; tube 2.5–4 mm long, with a ring of deflexed hairs within; lobes 1.8–3 mm long, triangular or oblong, subapiculate.
Fruit black, 6–9 mm in diameter, subglobose, with (2)4–5 pyrenes; pedicels 7–12 (15) mm long.
Calyx tube 1–1.5 mm long, the limb 0.3 mm long, truncate or obscurely toothed, scarious.
Stigma described as yellow below, green in middle and blue on top, coroniform, 5-lobed.
Scrambling or erect shrub or small tree up to 15 ft. high
Flowers pale greenish or yellowish
Pyrenes usually pitted.
Style 4–4.5 mm long.
Ovary (4)5–locular.
Fruits reddish
Life form perennial
Growth form tree
Growth support climber
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 2.79 - 4.79
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
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Fruit color
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Nitrogen fixer -
Photosynthetic pathway -

Environment

In secondary forest.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

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

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
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Optimum temperature (C°) -
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Productivity -

Distribution

Rytigynia umbellulata world distribution map, present in Angola, Benin, Botswana, Central African Republic, Cabo Verde, Gabon, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Mozambique, Nigeria, Sudan, Senegal, Sierra Leone, Togo, Tanzania, United Republic of, Uganda, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:765783-1
WFO ID wfo-0000299241
COL ID 78YZY
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Rytigynia concolor Rytigynia umbellulata Vangueria sparsifolia Rytigynia junodii Rytigynia perlucidula Rytigynia welwitschii Vangueria concolor Canthium lagoense Vangueria junodii Rytigynia sparsifolia Vangueria umbellulata