灰岩皱叶报春 hui yan zhou ye bao chun

Primula bullata Franchet var. rufa (I. B. Balfour) W. W. Smith & H. R. Fletcher; P. rufa I. B. Balfour; P. redolens I. B. Balfour & Kingdon Ward.

Herbs perennial. Rhizomes woody, with remains of old leaves at apex. Leaves forming a rosette; petiole 2--10 cm, fulvous pilose; leaf blade ovate-elliptic to elliptic-oblong, 3--8 X 2--5 cm, occasionally to 12 X 6 cm at fruiting, fulvous pilose, base broadly cuneate to obscurely cordate, margin crenate to blunt dentate, apex rounded to obtuse. Leaves of previous year thicker, bullate, abaxially yellow farinose. Scapes 7--25 cm, glandular tawny pubescent. Inflorescences umbellate, fulvous pilose, 7--18(--25)-flowered; bracts broadly lanceolate, 1--3 cm, leaflike. Pedicel initially slightly shorter than bracts, elongating to 4 cm in fruit. Flowers heterostylous. Calyx subtubular, 1.2--1.5 cm, pilose, farinose near base of interior, parted to ca. 1/3; lobes ovate-oblong, apex subrounded to obtuse. Corolla deep golden yellow, exannulate; tube slightly longer than calyx; limb 1.5--2.5 cm wide; lobes broadly obcordate to suborbicular, 2-cleft at apex. Pin flowers: stamens 5--6 mm above base of corolla tube; style ca. 9 mm. Thrum flowers: stamens ca. 9 mm above base of corolla tube; style ca. 2.5 mm. Capsule ovoid, shorter than calyx. Fl. Apr-May. 2n = 24@.

* Open mountain forests, in limestone rock crevices; 3000--3200 m. N and W Yunnan