Ludwigia octovalvis (Jacq.) Raven.

Common Name : Primrose willow
Family : Onagraceae

HABIT

A SEMI-SHRUBBY, ERECT, ANNUAL OR PERENNIAL HERB; 0.3-1.2 M TALL.

STEMS

WOODY BELOW, MUCH BRANCHED

LEAVES

ALTERNATE, NEARLY SESSILE, PUBESCENT TO GLABRESCENT, VARIABLE IN SIZE AND SHAPE, 0.7-14 CM LONG AND 0.1-4 CM WIDE, LINEAR TO BROADLY ELLIPTIC, APEX ACUTE TO ATTENUATE; BASE NARROWLY TO BROADLY CUNEATE.

FLOWERS

YELLOW, PUBESCENT, SOLITARY, BORNE IN AXILS OF UPPER LEAVES.

FRUITS

CAPSULE MEMBRANOUS, SUBQUADRANGULAR, CYLINDRICAL, 8-RIBBED, 2.5-5 CM LONG.

SEEDS

MINUTE, OVOID, SHINY, BROWN.