Contains 3 accepted taxa overall.
Characteristics
Classification
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 STARBURR | Not Native | ||
| Acanthospermum hispidum | HISPID STARBURR | Not Native | ||
| Acanthospermum humile | LOW STARBURR | Not Native |
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
2
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 |
|---|---|---|---|
| Centrospermum | Centrospermum Kunth, in Humboldt et al., Nov. Gen. Sp. 4: 270, pl. 397. 1818, nom. rej. vs. Acanthospermum Schrank 1820. | TYPE: Centrospermum xanthioides Kunth, nom. illegit. (Melampodium australe Loefling ex Linnaeus) | |
| Orcya | Orcya Vellozo, Fl. Flumin. 344. 1829 ("1825"). | TYPE: Orcya adhaerens Vellozo |