Pteronia tricephala Dc.

Species

Angiosperms > Asterales > Asteraceae > Pteronia

Characteristics

A small branched shrub. Branches glabrous or very minutely scaberulous, viscid. Leaves opposite, almost free from each other at the base, linear-trigonous, acute and hooked pointed at the apex, 0-5-l.2 cm long, glabrous or slightly scabrous on the margin, viscid. Heads 5-flowered, asually ternate, rarely solitary, narrowly obconic, 1.3-1.5 cm long, about 5 mm in diameter. Involucral bracts 6-7-seriate, lanceolate, acute or subacute, distinctly keeled near the apex, glabrous, with membranous margins, very finely ciliate. Receptacle flat, honeycombed, hardly fimbriate. Corolla 8.5 mm long, glabrous; lobes linear-oblong, subacute, 2 mm long. Filaments inserted at the base of the corolla tube, 7 mm long, filiform; anthers 3.5 mm long, linear, lanceolate and subacute at the apex. Style 9.5 mm long, terete; branches 4 mm long, linear, acute. Achenes obovate-oblong, 2.5 mm long, densely hairy. Pappus pale straw-coloured, a little longer than the corolla.
More
Shrub, up to 0.8 m high. Leaves opposite, sessile, almost free from each other at base; blade linear-trigonous, apex acute and hooked, glabrous or slightly scabrous on margins. Heads discoid, in threes at branch tips, rarely solitary. Involucral bracts 6-or 7-seriate, imbricate, apex acute or subacute, keeled near apex, glabrous, margins membranous and finely ciliate. Flowers: disc florets only, yellow; Nov.-Jan. Fruit with cypsela obovate-oblong, densely hairy. Pappus of straw-coloured, subplumose bristles, outer more slender than inner.
Small shrub, 0.3-0.8 m high. Leaves opposite, linear-trigonous, acute and hooked at apex, almost free from each other at base, glabrous or slightly scabrous on margins. Capitula discoid, in threes at branch tips, rarely solitary; involucral bracts in many rows, imbricate, acute or subacute, keeled near apex, glabrous, margins membranous and finely ciliate. Florets yellow. Flowering time Nov.-Jan. Pappus of straw-coloured, subplumose bristles, outer more slender than inner. Cypselae obovate-oblong, densely hairy.
Small shrub, up to 0.8 m tall. Leaves opposite, linear, acute and hooked at apex, glabrous or slightly scabrous on margins. Flowerheads discoid, in threes at branch tips, ± bell-shaped; involucral bracts acute or subacute, keeled near apex, glabrous, margins membranous and finely ciliate; disc florets yellow. Cypselas densely hairy.
Life form -
Growth form shrub
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.8
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) 9-11

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

Pteronia tricephala world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:240320-1
WFO ID wfo-0000084064
COL ID 4PZYB
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Pteronia tricephala