Flora of North America species comparison

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Acanthospermum hispidum

hispid starbur, hispid starburr
Habit Plants 10–60+ cm.
Stems

erect.
Leaf

blades rhombic-ovate to obovate, (20–)40–120(–150+) mm, faces finely pilosulous, gland-dotted.
Fruits

± compressed, ± cuneate to obovate, 4–6+ mm, not notably ribbed, terminal spines 2, divergent, 3–4 mm, often 1 ± uncinate, prickles seldom notably uncinate, ± scattered.
2n

= 22.

Acanthospermum hispidum
Phenology Flowering year round, mostly Aug–Oct.
Habitat Disturbed, often sandy sites
Elevation 0–100+ m (0–300+ ft)
Distribution
from FNA
AL; FL; GA; NJ; OR; SC; VA; ON; South America [Introduced in North America; also introduced in Mexico, West Indies, Central America, Europe, Asia, Africa, Pacific Islands (Hawaii)]
[BONAP county map]
Source FNA vol. 21, p. 37.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Melampodiinae > Acanthospermum
Sibling taxa
A. australe, A. humile
Name authority de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 522. (1836)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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