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FOC | Family List | FOC Vol. 15 | Primulaceae | Primula

20. Primula obconica Hance, J. Bot. 18: 234. 1880.

鄂报春 e bao chun

Herbs perennial. Leaves forming a rosette; petiole 1.5--14 cm, with white or tawny multicellular hairs; leaf blade ovate-rotund to elliptic or oblong, (1.5--)3--14(--17) X (1--)2.5--11 cm, abaxially glabrous or sparsely pilose, especially along veins, adaxially glabrescent, puberulous or short pilose, base cordate or occasionally rounded, margin nearly entire, repand or sinuate-lobulate, apex rounded. Scapes longer or shorter than leaf rosette, with white or tawny, multicellular hairs; umbel solitary, 2--13-flowered; bracts linear to linear-lanceolate, 3--10 mm. Pedicel (1.5--)5--20(--25) cm, pubescent. Flowers heterostylous or homostylous. Calyx cup-shaped to broadly campanulate, puberulous or short pilose, parted to 1/4--1/3; lobes broadly triangular, ciliate, apex hydathode-apiculate. Corolla pink to lavender-rose, rarely white; tube ca. 2 X as long as calyx; limb 1.5--2.5 cm wide; lobes broadly obovate emarginate. Pin flowers: stamens near base of corolla tube; style nearly reaching tube mouth. Thrum flowers: stamens at middle of tube; style 2--2.5 mm. Homostylous flowers with stamens near tube apex; style reaching stamens. Capsule unknown. 2n = 22@, 62@.

* Thickets, forests, on rocks in mountain woods, dry limestone cliffs; 500--3300 m. Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Xizang, Yunnan.

1 Leaf blade ovate-elliptic to oblong, usually much longer than wide.   (2)
+ Leaf blade ovate-rotund to suborbicular, ca. as long as wide or slightly longer than wide.   (3)
2 (1) Leaves thin papery when dry, margin nearly entire or repand   20a subsp. obconica
+ Leaves membranous when dry, sinuate-lobulate   20b subsp. werringtonensis
3 (1) Scapes shorter than leaf rosette and only slightly longer than pedicel   20e subsp. parva
+ Scapes longer than leaf rosette and many X longer than pedicel.   (4)
4 (3) Leaves densely black punctate abaxially   20c subsp. nigroglandulosa
+ Leaves epunctate   20d subsp. begoniiformis

Lower Taxa


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