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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Youngia

11. Youngia lanata Babcock & Stebbins, Publ. Carnegie Inst. Washington. 484: 76. 1937.

绒毛黄鹌菜 rong mao huang an cai

Youngia nujiangensis C. Shih.

Herbs 9-30 cm tall, perennial, rosulate. Taproot slender, with shoot-bearing lateral roots. Caudex short, with residues of old leaf bases. Stems solitary or few, slender, ± erect, pale arachnoid hairy especially at bifurcations, sparsely leafy. Rosette leaves obovate to oblanceolate, 3-10 × 0.5-1.5 cm, almost undivided, or ± lyrately pinnatifid to pinnatisect, abaxially pale arachnoid hairy, adaxially pubescent with short pale crinkled hairs, base attenuate into a short ± winged petiole-like portion, margin sinuate-dentate, apex obtuse to acute; lateral lobes ovate to triangular, apex rounded to acute and mucronulate. Stem leaves 1-3, linear, reduced in size, undivided. Synflorescence corymbiform, with few to less than 10 capitula. Capitula with 9-11 florets; peduncle capillaceous, 4-15 mm, ± white arachnoid hairy. Involucre narrowly cylindric, 6-8 mm, in fruit to 9 mm, abaxially glabrous. Outer phyllaries ovate, longest 1-1.5 mm, apex acute; inner phyllaries 8, adaxially glabrous, midvein often subapically with small crest or claw, margin white scarious, apex acute. Anther tube greenish yellow. Style branches yellow upon drying. Achene dark brown, fusiform, ca. 3.5 mm, subcompressed, ribs finely spiculate. Pappus white, 3.5-5 mm. Fl. May-Jun.

● Among rocks, rock crevices, wastelands; 1700-2700 m. Yunnan.

Comparison of material determined by Babcock as Youngia lanata, which includes the isotype of Y. nujiangensis (GH), revealed both taxa to be conspecific. Part of the inner phyllaries of the type collection of Y. nujiangensis are subapically crested or corniculate as in Y. lanata.


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