Funtumia elastica (P.Preuss) Stapf

Silkrubber (en)

Species

Angiosperms > Gentianales > Apocynaceae > Funtumia

Characteristics

Tree up to 35 m high; white latex coagulating easily; trunk up to 50 cm in diameter; branchlets glabrous.. Leaves petiolate; blade 6–27 cm long, 1.5–10 cm wide, base rounded or cuneate, apex acuminate, glabrous except for a few hairs beneath on midrib; domatia often present, consisting of pits with a ciliate margin; petiole 2–15 mm long, glabrous.. Inflorescence 2.2 cm long, 3–35-flowered; pedicel 2–8 mm long, glabrous.. Flowers with sepals elliptic to broadly ovate, 3–5 mm long; corolla tube very pale green to white, 5.5–10.5 mm long, 3–5.5 mm wide, glabrous outside; lobes white, triangular to ovate, distinctly auriculate, 3–7 mm long, 2–4 mm wide, glabrous on both sides; disk with truncate lobes; pistil 4–6 mm long; ovary glabrous; style 1.5–3 mm long, glabrous.. Fruit almost clavate, 8–19 cm long, 2–4 cm in diameter, subacute or acute at the apex; seeds 4.5–7 cm long, 0.3–0.4 cm wide; coma 3–5 cm long, glabrous basal portion 0.5–1.3 mm long, hairs 4.5–7 cm long.
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Trees to 35 m tall. Trunk to 50 cm in diam.; bark greenish brown to gray. Petiole 0.5-1.5 cm; leaf blade oblong or narrowly so, 6-27 X 1.5-10 cm, leathery, margin undulate; lateral veins 7-11 pairs, with axillary domatia abaxially, glabrous. Cymes short, glabrous; peduncle ca. 1 cm. Pedicel 2-8 mm. Sepals 4-5 mm, elliptic to broadly ovate, glabrous, glandular adaxially. Corolla tube pale green to white, 7-9 mm, glabrous; lobes 5-6 mm, apex obtuse. Anthers appressed pilose abaxially. Follicles narrowly spatulate, 8-19 cm, woody. Seeds fusiform, 4.5-7 cm, beak 3-5 cm, coma 4.5-7 cm. 2n = 22.
A tree. It grows up to 30 m high. The trunk is 50 cm across. The leaves are oblong and 6-27 cm long by 2-10 cm wide. The edges are wavy. The leaves are opposite. The flowers are tube shaped and green to white. The fruit are follicles 8-19 cm long. They are woody.
Up to 60ft. high and very similar to the above (Funtumia africana)
Flowers mostly white.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5
Mature height (meter) 27.5 - 32.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

A tropical plant. It grows in deciduous forest. It grows in drier regions and secondary forests. In Nigeria it has been recorded at 750 m above sea level. In Yunnan.
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Deciduous forest. An evanescent species in secondary growth on abandoned cultivated land.
Light 7-9
Soil humidity 4-6
Soil texture 1-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 10-12

Usage

The ground bark is sold as a dietary supplement.
Uses environmental use food fuel material medicinal oil poison timber wood
Edible barks
Therapeutic use Hemorrhoids (bark), Impotency (unspecified), Jaundice (unspecified), Piles (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from seed.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Funtumia elastica unspecified picture

Distribution

Funtumia elastica world distribution map, present in Angola, Benin, Central African Republic, China, Côte d'Ivoire, Cameroon, Congo, Cuba, Dominica, Egypt, Gabon, Ghana, Guinea, Equatorial Guinea, Honduras, Liberia, Nigeria, Puerto Rico, Senegal, Sierra Leone, South Sudan, Sao Tome and Principe, Trinidad and Tobago, Taiwan, Province of China, Tanzania, United Republic of, Uganda, and Samoa

Conservation status

Funtumia elastica threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:79099-1
WFO ID wfo-0000967502
COL ID 6K4WT
BDTFX ID -
INPN ID 634329
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Kibatalia elastica Kixia elastica Funtumia elastica Kickxia elastica