Family: Asteraceae
Galinsoga parviflora
Citation:
Cav., Icon. 3:41 (1795).
Synonymy: Not Applicable Common name: Yellow weed, potato weed, galinsoga.
Description:
Annual herb 25-50 cm high; stems erect, branched, striate, subglabrous; leaves in remote pairs, shortly petiolate, lanceolate to ovate, acute, 2-6 cm long, 1-4 cm wide, flaccid, subglabrous to hispidulous, prominently veined; margins entire to slightly serrate.
Peduncles 1-4 cm long, leafless, with appressed non-glandular hairs and spreading glandular hairs; capitula 4-7 mm diam.; outer involucral bracts ovate, 1-2 mm long; inner bracts 5, broadly ovate, 2-4 mm long, glabrous; ray florets 5; ligules obovate, 3-toothed, c. 1 mm long, white.
Ray achenes c. 2 mm long, black, slightly pubescent; pappus of minute bristles; disk florets numerous, yellow; receptacular scales acute or 3-toothed, c. 2.5 mm long, persistent; disk achenes c. 1.8 mm long, black, slightly pubescent; pappus of numerous lanceolate fimbriate scales c. 1.5 mm long.
| Branch, ray floret, disk floret, anthers, style, ray achene and disk achene.
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Image source: fig. 646 in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).
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Published illustration:
Kleinschmidt & Johnson (1977) Weeds of Queensland, p. 383.
Distribution:
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Weed of cultivated fields, gardens and waste ground in towns.
S.Aust.: SL. All States except N.T.. Native to South America.
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Conservation status:
naturalised
Flowering time: most of the year.
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SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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Biology:
No text
Author:
Not yet available
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