Spermacoce confusa Rendle

River false buttonweed (en)

Species

Angiosperms > Gentianales > Rubiaceae > Spermacoce

Characteristics

Annual herb 30–90 cm. tall, with generally erect angled stems, the angles mostly rather rough, often with very short stiff papilla-like hairs, particularly just below the nodes.. Leaf-blades linear-lanceolate to narrowly elliptic, 2.5–5 cm. long, 0.2–1.3 cm. wide, acute or acuminate at the apex, cuneate at the base, shortly to densely scabrid above and on the nerves beneath; petiole very short; stipule-sheath ± 1 mm. long, with several fimbriae 1–2 mm. long.. Calyx-tube narrowly turbinate, 1.5 mm. long; lobes triangular, ± 0.5 mm. long.. Corolla white, white and pink or pale mauve; tube ± 1.5 mm. long; lobes ovate, ± 0.5 mm. long.. Capsule ellipsoid to subglobose, 2–2.5 mm. long, 1.5 mm. wide, finely wrinkled striate, glabrous to densely hairy, crowned with the short calyx-lobes.. Seeds dark chestnut-brown, narrowly ellipsoid, 1.6–1.8 mm. long, 0.8 mm. wide, scarcely pitted (fide Rendle), very distinctly reticulate-foveolate (in African material).
More
Subshrubs or herbs, to 1/2 m tall, branching, the stems angular, scarcely thick-ened on the angles, scabridulous, the nodes well spaced, the uppermost leaves often narrower or shorter. Leaves sessile or subsessile, elliptic to narrowly ob-long, 0.7-3.5 cm long, 0.1-1.0 cm wide, acute at the apex, basally acute or attenuate acute, the lateral veins 4, strongly ascending, stiffly papyraceous, con-colorous, drying dull green, scabridulous above, scabrid beneath on the costa and the veins; stipules with the sheath short, scabridulous, the setas few, 5-8, longer than the sheath. Inflorescences axillary, those in lower axils to 0.7 cm wide, to 0.3 cm wide in the uppermost axils. Flowers not seen. Fruits oblong, ca. 2 mm long, scabridulous outside, the calycine teeth often persistent, acute.
Life form annual
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.15 - 1.45
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 -
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Optimum temperature (C°) -
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Vigor -
Productivity -

Distribution

Spermacoce confusa world distribution map, present in Aruba, Bahamas, Bolivia (Plurinational State of), Brazil, Costa Rica, Cuba, Dominica, Ecuador, Guatemala, Honduras, Jamaica, Nicaragua, Panama, Peru, Puerto Rico, Paraguay, and Venezuela (Bolivarian Republic of)

Identifiers

LSID urn:lsid:ipni.org:names:766663-1
WFO ID wfo-0000312335
COL ID 4YJNW
BDTFX ID -
INPN ID 630712
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Spermacoce confusa