Botanical name: Senecio boluangensis    Family: Asteraceae (Sunflower family)
Synonyms: Senecio obtusatus auct. non Wallich ex Candolle

Eastern Leafless Ragwort is a perennial herb with an almost leafless stem. Stems are usually solitary, erect, 30-80 cm tall, slender, simple or branching into inflorescence, velvet-hairy especially near base or more or less hairless. Basal leaves are present at anthesis, in a rosette, shortly stalked, winged, basally expanded but not eared; blade elliptic, 5-21 cm long, 2-5 cm broad, thickly papery, both surfaces sparsely velvet-hairy to hairless, lateral veins 14-18. Median stem leaves are few, stalkless, oblong to linear, base expanded and somewhat stem-clasping, margin finely toothed, tip blunt; uppermost leaves linear, bractlike. Flower-heads daisy-like, few to many in branch-end corymb or compound corymb, branches slender; flower-cluster-stalks 5-20 mm long, linear-bracteate, bearing 2-3 linear bracteoles. Involucres are narrowly bell-shaped, 3-5.5 mm long, 2.5-6 mm broad, calyculate; bracts of calyculus 4-5, linear-subulate; phyllaries 10-13, oblong, 1 mm broad. Ray-florets are about 8; flower tube 3 mm long; rays yellow, oblong or elliptic-oblong, 6.5 mm long, 2 mm broad, apically blunt, 3-finely toothed, 4-veined; disc-florets about 25; flower yellow, 5.5 mm long. Seed-pods are cylindrical, 4 mm long, velvet-hairy. Pappus 5 mm long, white. Eastern Leafless Ragwort is found in Meghalaya, Manipur, Thailand and China, at altitudes of 1200-3350 m. Flowering: April-August

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The flower labeled Eastern Leafless Ragwort is ...