*Acanthospermum australe (Loefling) Kuntze. Common name: Paraguay Bur, Sheep Bur, Paraguay Starbur. Phenology: (Mar-) May-Nov. Habitat: Disturbed areas. Distribution: Native of South America.
Origin/Endemic status: South America
Synonymy ⓘ: = Ar, C, F, Fl7, FNA21, G, K4, NY, RAB, S, SE1, Tx, Va, WH3; = n/a — Pa; Melampodium australe Loefling — (basionym)
Links to other floras: = Acanthospermum australe - FNA21
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Horticultural Information
Intro: Prostrate-trailing, tap-rooted annual of disturbed areas. Native of South America.
Stems: Stems prostrate, branching, usually rooting at nodes and short-hairy, at least toward stem ends.
Leaves: Leaves opposite, petiolate, oval to diamond-shaped, coarsely toothed, fleshy, gland-dotted.
Inforescence:
Flowers: Composite flowers (heads) solitary at ends of branches, about 1/4-in. wide, consisting of about 5 white ray florets in a ring around a few 5-lobed, tubular disk florets, all surrounded by a series of tiny bracts.
Fruits: Fruit a vaguely star-shaped (5-sided) nutlet covered with hooked prickles.
Comments:
Height: 1-5 ft. (long)
plant sale text:
bloom table text:
description: Prostrate-trailing, tap-rooted annual of disturbed areas. Native of South America.
stems: Stems prostrate, branching, usually rooting at nodes and short-hairy, at least toward stem ends.
leaves: Leaves opposite, petiolate, oval to diamond-shaped, coarsely toothed, fleshy, gland-dotted.
inflorescence:
flowers: Composite flowers (heads) solitary at ends of branches, about 1/4-in. wide, consisting of about 5 white ray florets in a ring around a few 5-lobed, tubular disk florets, all surrounded by a series of tiny bracts.
fruits: Fruit a vaguely star-shaped (5-sided) nutlet covered with hooked prickles.
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cultural notes:
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