Weed
German chamomile
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.
ObovateObovate:
Inverted egg shaped with apical end the broadest.
Light yellow ribs with light brown in between
Large longitudinal ribs on one side and small ribs on the other
Scar is on the basalBasal:
The base of the fruit or seed opposite the apical end.
end.
PappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
crown and scar are lateral to their respective ends on the large rib side. Area between ribs is rough.
Not listed
Not included
Asteraceae
Matricaria recutita L.
Chamomilla chamomilla (L.) Rydb., nom. inval.
Chamomilla recutita (L.) Rauschert
Matricaria chamomilla L. 1755 & 1763, non 1753
Matricaria chamomilla L. var. coronata (J. Gay) Coss. & Germ.
Matricaria suaveolens L.
