BUFFALOBUR, Solanum rostratum
Dunal. 1, entire plant; 2, 3, seed pods; 4,
seed; 5, flower. Annual, reproducing by seeds. Stem
erect, branched in upper portion, 6 to 24 inches (15 to 60 cm) tall, hairy,
densely covered
with long stiff yellow prickles. Leaves 2 to 5 inches (5 to
12.5 cm) long, alternate, petioled, densely hairy, cut into deep rounded
lobes; veins, midribs, and petioles very prickly. Flowers yellow
with 5 lobes, 1 to 1-1/2 inches (2.5 to 3.8 cm) across, in clusters from
stalks on upper branches. Fruit a berry enclosed in a rough-spiny
bur. Seeds numerous, round, flattened, dull brownish-black. Found
in fields, overgrazed pastures, yards, roadsides, and waste areas.