Weed
coast tarweed, Chilean tarweed, tarweed
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.
Bent obovateObovate:
Inverted egg shaped with apical end the broadest.
White to light brown, mottled with black
Minute reticulations and longitudinal lines
Scar is small and basalBasal:
The base of the fruit or seed opposite the apical end.
.
AchenesAchene:
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. obovoid, bent with one side convex and the other concave. Two sizes of achenesAchene:
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.. Color gray with black mottling, some larger achenesAchene:
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. white. ApexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
shoulders rounded. Scar basalBasal:
The base of the fruit or seed opposite the apical end..
State Noxious Weed: Colorado
Not included
Asteraceae
Madia sativa Molina
Madia capitata Nutt.
Madia sativa Molina ssp. capitata (Nutt.) Piper
Madia sativa Molina var. congesta Torr. & A. Gray
