Red Rice: Oryza Sativa
|Weed Description: An erect
summer annual that may reach 32 inches in height. Red Rice is primarily a weed of
rice and occurs in parts of Texas, Louisiana, Arkansas, and Mississippi where rice is
Roots: A fibrous root system.
|Leaves: Mature leaf blades are from
12 to 24 inches long and 7 to 20 mm wide. Leaves have auricles and also have a long
(15 mm) membranous ligule that is triangular in outline. Some hairs occur in the
Stems: Sheaths are tufted and without hairs except in the collar regions.
|Flowers: Seedhead is a loose panicle,
often somewhat drooping, reaching a maximum length of 8 inches. Panicles consist of
many spikelets that are 7 to 10 mm long and 2 to 2 1/2 mm wide.
Identifying Characteristics: The presence of auricles and tall membranous ligule are both characteristics that help in the identification of red rice.