Rough Dayflower is an erect herb, up to 1 m tall.
Leaves are scattered, oblong-lanceshaped, tapering, base rounded,
narrowed into a leaf-stalk, bristly above and hairless below, up to 15
x 3.5 cm, sheath bristly, up to 2.5 cm long. Flowers are borne in
panicles at branch-ends, glandular velvet-hairy. Flowers are pale lilac
or blue, 0.8 cm across. Sepals basally fused. Ovary 3-celled; ovule 1
in each cell. Capsule spherical, velvet-hairy 3.5 mm across; seeds
planoconvex, glandular. Rough Dayflower is found in Indo-Malesia. It is
also found in Eastern Himalaya, at altitudes of 800-2100 m.
Flowering: June-August.