Botanical name: Crotalaria sessiliflora subsp. sessiliflora Family: Fabaceae (Pea family)
Synonyms: Crotalaria nepaulensis, Crotalaria burmanica
Stalkless Blue Rattlepod is an annual herb, 1-2 ft tall. Branches are velvety with silky hairs. Leaves are simple, about 4.6-15 cm long, linear to lanceshaped, pointed, hairless above, thinly silky below. Stipules are minute. Flowers are borne in a raceme, up to 25 cm long, 2-20-flowered, rarely flowers solitary. Bract and bracteoles are long, setaceous. Sepal cup is 1-1.3 cm long, velvety, hairs brown, silky, teeth pointed. Flowers are blue to purplish blue, slightly shorter than calyx; standard oblong, 7-10 x 4-7 mm, sparsely bristly below along midvein, base with 2 appendages, tip blunt to flat. Wings are oblong to linear-oblong, shorter than standard; keel as long as standard, bent sharply below middle, upper margin proximally woolly, apex extended into straight twisted beak. Fruit is 1.5 cm long, glabrous, sessile, 10-15-seeded. Stalkless Blue Rattlepod is found in Pakistan, India, Himalayas, Burma, China, Japan, Philippines, at altitudes of 100-1600 m. Flowering: May-November.
Identification credit: Krishan Lal
The flower labeled Stalkless Blue Rattlepod is ...