Weed
hispid starbur
AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.
Conical to tear-drop
Yellowish-brown to brown
Many short spines
Spiny with two large spines at either side of apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.
This acheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat. is triangular to a tear-drop shape in outline and triangular in cross-section. It is yellowish-brown with a spiny texture of medium spines with two noticeable large spines subtending the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar. of the acheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat..
State Noxious Weed: Hawaii
Not included
For more information, see ISMA fact sheet.
Asteraceae
Acanthospermum hispidum DC.
