腾冲斑鸠菊 teng chong ban jiu ju

Khasianthus subsessilis H. Robinson & Skvarla var. macrophyllus (J. D. Hooker) H. Robinson & Skvarla.

Herbs, to 60 cm tall or more. Stems erect or ascending, few branched, terete, striate, densely adpressed gray puberulent. Lower leaves lost by anthesis; middle and upper leaves: petiole to 5 mm, abaxially densely pubescent, adaxially shallowly channeled, almost flat; leaf blade oblanceolate, papery, abaxially puberulent when very young, soon glabrous except for puberulent main veins, adaxially glabrous except for very minutely puberulent midvein, lateral veins 9-12-paired, adaxially prominent, reticulate veins prominent on both surfaces, base minutely rounded, margin coarsely toothed to subentire, apex rounded. Synflorescences terminal, panicles ± flat-topped to somewhat elongated, lower branches subtended by leaflike bracts. Capitula peduncle bracteoles several just below involucre, linear. Involucre obconic, 10-12 mm; phyllaries 5- or 6-seriate, subulate or subulate-lanceolate, sparsely pubescent, apex acute, sometimes recurved, outer much shorter, almost subulate, inner 10-12 × ca. 0.8 mm. Florets 40-50; corolla mauve, tubular, ca. 14 mm, sparsely glandular; lobes linear, ca. 3.5 mm. Immature achenes cylindric, 2-2.5 mm, 10-ribbed, densely sericeous. Pappus 2-seriate, pale reddish; outer setae few, short; inner setae to 13 mm.

Yunnan [India, Myanmar, Nepal].

The variety recognized here, as seen in the collection Rock 7839 from between Tengyueh in Yunnan and Bhamo in N Myanmar, has leaf apex almost rounded and synflorescences nearly racemiform rather than broadly corymbiform. The leaves are also somewhat more pubescent abaxially. In Rock’s field notes, on file in US, this collection is cited as "one day from Tengyueh," evidently inside China.