Alatoseta tenuis Compton

Species

Angiosperms > Asterales > Asteraceae > Alatoseta

Characteristics

Planta annua. Caules divaricati angusti rigidi teretes, pilis longis sparsis mollibus tecti. Folia alterna acicularia, long, 3/4-1 in., lat. 1/3 lin., infra carinata, supra sulcata, laxe pilosa, glandulosa, subrigida, apice pungente. Capitula terminalia solitaria erecta. Pedunculi long. 2-4 lin., bracteis subulatis pungentibus in bracteis involucri gradatim transeuntibus tecti. Involucrum bracteis exterioribus angustis, membranaceo-alatis, apicibus subulatis pungentibus, patentibus vel reflexis; interioribus erectis, supra medio membranaceo-alatis, acuminatis, long. 4 lin., lat. 2/3 lin.; omnibus nigro-fuscis praeter margines hyalinos. Flores radii purpurei ligulati feminei, long. 6 mm [as '3 lin.'] Flores disci hermaphroditi tubulosi, long. 21/2 lin., sub medio transverse plicati vel invaginati. Receptaculum paleis numerosis angustis long. 4.2 mm [as '2 lin.'] Antherae minute appendiculatae. Styli rami angusti teretes, obtusi, hispidi. Achaenia brevia, pilis setosis erectis dense tecta. Pappi setae 5, long. 2/3 lin., quaeque 2 alas hyalines semiovatas long. 1/3 lin., basi lateraliter ferentes.
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Wiry-stemmed, thinly woolly annual, up to 50 mm tall, branching from base, branches divaricately spreading. Leaves linear, pungent, 10-20 mm long, with margins rolled under, minutely glandular-hairy, thinly white-woolly when young, especially beneath. Flowerheads solitary at branch tips, radiate, 10-15 mm diam.; involucral bracts with wide membranous margins, pungent, outer sharply reflexed; ray florets magenta or white with purple reverse; disc florets yellow. Cypselas densely hairy; pappus of 5 awns, with membranous wings at base.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05
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) -

Usage

Uses -
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

Alatoseta tenuis world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:175830-1
WFO ID wfo-0000033666
COL ID BFFF
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Alatoseta tenuis