East-Asian Buttonhead is an annual herb, 6.5-35 cm
tall. Stems are solitary or fascicled, robust, rarely slender,
branched, sparsely to densely white hairy or velvet-hairy. Leaves are
stalkless, blade ovate, obovate-oblong-spoon-shaped, or oblong,
surfaces sparsely hairy, sometimes becoming hairless or glabrate, veins
densely hairy-fringed with hairs; mid stem leaves 3-6 x 1.5-3 cm,
pinnate, rarely lyrate-pinnatilobate, sometimes unlobed, lateral lobes
1-3-paired, spoon-shaped or broadly spoon-shaped, base eared-clasping,
margin coarsely rounded toothed-sawtoothed, densely or sparsely white
shortly hairy. Flower-heads are spherical, 3-5 mm in diameter, few or
numerous in lax to dense corymbiform or paniculate-corymbiform
synflorescences; flower-cluster-stalks slightly robust, finely
velvet-hairy or glabrate. Phyllaries 2- or 3-seriate, oblong, 1-1.5 mm,
margin finely toothed. Receptacle spherical, tip flat. Marginal female
florets many seriate, white, flower ovoid or urn-shaped, 0.5-0.7 mm, 2-
or 3-lobed; disk florets few, yellow-green, 0.8-0.9 mm. Achenes are
straw-colored, obovoid, compressed, hairless. Pappus absent, or of disk
florets sometimes with 1 or 2 fine bristles. East-Asian Buttonhead is
found in China, E Himalayas, Bhutan, Nepal, Cambodia, Laos, Vietnam. at
altitudes of 700-3200 m. Flowering: All year.
Identification credit: Tabish
Photographed in Tawang, Arunachal Pradesh.
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The flower labeled East-Asian Buttonhead is ...