Contains 3 accepted taxa overall.

Characteristics
Acanthospermum Schrank
STARBURR
Classification
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ASTERALES
Acanthospermum
Citation
ACANTHOSPERMUM Schrank, Pl. Rar. Hort. Monac. 53. 1820, nom. cons. vs. Centrospermum Kunth 1818.
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TYPE: Acanthospermum brasilum Schrank
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Acanthospermum australe Paraguay Bur, Sheep Bur
Acanthospermum hispidum Hispid Starbur
Acanthospermum humile Low Starbur
Identification Key
1.  Fruit 7-10 mm long, with 5-7 ribs, without terminal spines
1.  Fruit 2-6 mm long, with 0-3 ribs, with 2 terminal spines
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2.  Leaves 20-70 mm long, sessile or subsessile; fruit lacking distinct ribs, prickles scattered
2.  Leaves 10-35(45) mm long, the blade usually abruptly contracted to a winged petiole; fruit with 3 ribs, prickles mostly along ribs and the apex
Genus Synonyms
Synonym Full Citation Basionym Type
No synonyms found.