Spermacoce tenuior L.

Slender false buttonweed (en)

Species

Angiosperms > Gentianales > Rubiaceae > Spermacoce

Characteristics

Straggling or suberect annual or perennial herb 0.7(–2) m. tall; stems glabrous, not markedly angular.. Leaf-blades narrowly elliptic to lanceolate, 2–5(–8.5) cm. long, 0.4–1.35(–2.2) cm. wide, narrowly acute at the apex, narrowly cuneate at the base, glabrous save for slightly scabrid margins; petiole 1.5–2.5 mm. long; stipule-base 1–2.5 mm. long, glabrous or slightly pubescent with 7 setae 1.5–3 mm. long.. Inflorescences rather few-flowered, congested in the axils.. Calyx-tube narrowly obconic, 1.5 mm. long; 2 large calyx-lobes triangular, 0.5 mm. long, ± 3 small.. Corolla white, papillate, very small; tube 0.2–0.5 mm. long; lobes triangular, 0.5–1.5 mm. long, 0.4 mm. wide, usually hairy at and above the throat.. Anthers subsessile.. Style 0.5–2 mm. long.. Capsule obovoid to ellipsoid, 2.5–3 mm. long, glabrous, crowned with ± persistent calyx-lobes.. Seeds dark purple or chestnut-brown, ellipsoid, 2 mm. long.
More
Subshrubs to 12 m tall, the stems smooth, usually glabrous, the nodes well spaced. Leaves elliptic, narrowly oblong or obovate oblong, 3.0-5.5 cm long, 1.0-1.5(-1.9) cm wide, acute or obtuse at the apex, basally attenuate acute or acute, the costa prominulous beneath, the lateral veins (3-)4, strongly ascending, evanescent, rigidly papyraceous, glabrous, smooth, black when dry; petioles slen-der, 2-10 mm long; stipules with the sheath reduced, glabrous, the setas 4-5, exceeding the sheath in length. Inflorescences (in fruit) axillary, to 1 cm long. Flowers not seen. Fruits subsessile, oblong to turbinate, to 3 mm long, truncate, glabrous, smooth, black, the teeth tending to persist, to 0.3 mm long, acute.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 6.35
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

Spermacoce tenuior world distribution map, present in Aruba, Åland Islands, Bangladesh, Bahamas, Belize, Bolivia (Plurinational State of), Costa Rica, Cuba, Cayman Islands, Dominica, Ecuador, Georgia, Guatemala, Guyana, Honduras, Haiti, Jamaica, Nicaragua, Panama, Peru, Puerto Rico, Tanzania, United Republic of, United States of America, and Venezuela (Bolivarian Republic of)

Identifiers

LSID urn:lsid:ipni.org:names:241474-2
WFO ID wfo-0000312796
COL ID 4YK56
BDTFX ID -
INPN ID 847906
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Spermacoce linifolia Spermacoce spinosa Spermacoce tenuior Spermacoceodes tenuior Spermacoce tenuior var. angustifolia Spermacoce tenuior var. major Bigelovia linifolia Tardavel spinosa