Flora of the Hawaiian Islands
Literature for Mimosa pudica
Flora of Pakistan online (accessed 10 May 2013), Wagner et al., 1990, 1999. Literature for Mimosa pudica var. unijuga
Wagner et al., 1990, 1999; Lorence & Wagner, 2020.
   Fabaceae -- The Pea Family Bibliography
      Mimosa pudica
General Information
DistributionA pantropical weed, probably originally from South America.
Habit
Creeping annual or perennial herbs or subshrubs; stems 3-15 dm long, sparsely to densely prickly and sparsely hispid to glabrate.
Leaves
Leaves bipinnately compound, pinnae 1-2 pairs, sensitive, closing when touched, rachis short, leaflets 10-26 pairs per pinna, sessile, narrowly elliptic, 6-15 mm long, 1.2-3 mm wide, adaxially glabrous, abaxially slightly hispid, margin ciliate; petioles glabrous or hispid, usually sparsely prickly; stipules linear-lanceolate, 5-10 mm long, bristly.
Flowers
Flowers in globose or ovoid, pedunculate heads, these 1-5 in the leaf axils, 8-10 mm in diameter (excl. stamens), sparsely to densely hispid, bracts small, linear-acute; calyx minute; corolla red in upper part, glabrous or puberulent, 2-2.5 mm long, divided into 4 obtuse lobes; stamens 4(-6), much exserted; filaments pink to lavender, 4.5-6 mm long; ovary shortly stipitate, glabrous, ovules 3 or 4, style filiform, stigma small.
Fruit
Pods in clusters of 2-8, prickly on the margins, 1-2 cm long, 0.3-0.5 cm wide, flat, recurved, brown, breaking into 3-5, 1-seeded segments, these separating from the persistent, bristly sutures.
Seeds
Seeds pale brown, ovoid, flattened, 2.5-3.5 mm long.
Contributor
David Lorence