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Lactuca tysonii (E.Phillips) C.Jeffrey

Species

Angiosperms > Asterales > Asteraceae > Lactuca

Characteristics

A perennial herb up to 35 cm high with a slender creeping stock. Flowering stem scapose, glandular-setose or setose. Leaves mostly basal, up to c. 20 x 6 cm, oblong to elliptic, narrowed to the base, amplexicaul, scarcely auricled, margins irregularly denticulate, coarsely toothed or subruncinate-pinnatifid, setose particularly below. Heads relatively few (c. 4-15), subcorymbose. Involucre c. 2 x 1 cm, glandular-setose or glabrous. Flowers yellow. Achenes c. 9-10 mm long including 2 mm beak, elliptic, tapering at both ends, strongly compressed, 3-5 ribbed on each face with broad, thickened margins, reddish-brown.
More
Perennial herb, up to 0.5 m high, with milky latex. Leaves alternate, sessile, mostly basal, oblong to elliptic, narrowed to base, amplexicaul, margins irregularly denticulate, coarsely toothed or subruncinate-pinnatifid, setose. Capitula ligulate, few, subcorymbose; involucre up to 20 mm long; bracts glandular-setose or glabrous. Florets pale yellow. Flowering time Oct.-Feb. Pappus of many barbellate bristles. Cypselae reddish brown, elliptic, tapering to both ends, strongly compressed, 3-5-ribbed on each face with broad, thickened margins, tapering into a very short beak.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.43
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
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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°) -
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Productivity -

Distribution

Lactuca tysonii world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:228327-1
WFO ID wfo-0000069284
COL ID 6NSFK
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Sonchus scapiforme Sonchus tysonii Lactuca tysonii
WorldFloraDB 2024