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

23. Youngia bifurcata Babcock & Stebbins, Publ. Carnegie Inst. Washington. 484: 89. 1937.

顶凹黄鹌菜 ding ao huang an cai

Herbs 12-13 cm tall, perennial, rosulate. Stems several, very slender, arcuate-erect or stoloniform, remotely 2-furcate, densely pubescent with pale brownish hairs especially at bifurcations, almost leafless. Rosette leaves and (if present) first basal leaf oblanceolate, to 10 × 2 cm, lyrately pinnatifid to lyrately pinnatipartite, pale ± brownish pubescent especially abaxially on midvein, base attenuate into a short narrowly winged petiole-like portion, margin faintly mucronulately sinuate-dentate or entire, apex obtuse; lateral lobes 3-5 pairs, semiorbicular to broadly triangular, ± retrorse, gradually diminishing in size toward leaf base, apex rounded and mucronulate; terminal segment ovate to elliptic. Synflorescence of 1-5 ± distant capitula. Capitula with ca. 12 florets; peduncle very slender. Involucre cylindric, 6-7 mm, glabrous. Outer phyllaries pale yellowish, ovate, longest ca. 2 mm, ± fleshy, apex acute to obtuse; inner phyllaries 8, adaxially pubescent with appressed hairs, midvein subapically crested, apex acute and white ciliate. Anther tube green. Style branches yellow upon drying. Achene dark reddish brown, fusiform, 3-3.5 mm, compressed, ribs spiculate apically, apex attenuate. Pappus white, 1.5-2.5 mm, ± deciduous. Fl and fr. Apr-May.

● Cultivated land; ca. 2500 m. Yunnan (Dongchuan).

Youngia bifurcata is only known from the type collection made by E. E. Maire sometime in the first third of the 20th century.


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