Primula ioessa W. W. Sm.

Herbs perennial. Leaves forming a rosette; petiole usually much shorter than leaf blade, sometimes nearly as long as leaf blade; leaf blade narrowly oblong to oblanceolate, 6--20 X 1--2.5 cm, base attenuate, margin serrate-dentate to incised-dentate, apex rounded to acute. Scapes 10--30 cm, scarcely farinose toward apex; umbels 2--8-flowered; bracts linear to linear-lanceolate, 0.5--1.5 cm, sparsely yellow farinose, purplish striate. Pedicel 1--6 cm, yellow farinose. Flowers heterostylous. Calyx campanulate to tubular-campanulate, 7--8 mm, scarcely farinose and stained with purple outside, copiously farinose inside, parted to middle, 5-veined; lobes triangular, apex often slightly recurved, acute. Corolla pink to violet, rarely white; tube 0.9--1.1 cm; limb 2--2.5 cm wide; lobes broadly obovate, emarginate to nearly entire. Pin flowers: stamens ca. 2 mm above base of corolla tube; style ca. as long as tube. Thrum flowers with positions reciprocal. Capsule cylindric, ca. as long as calyx. Fl. Jul. 2n = 22@.

SE Xizang

* Alpine meadows; 3000--4200 m.

Primula sikkimensis J. D. Hooker subsp. subpinnatifida W. W. Smith; P. sikkimensis var. subpinnatifida W. W. Smith.

Primula ioessa là một loài thực vật có hoa trong họ Anh thảo. Loài này được W.W. Sm. miêu tả khoa học đầu tiên năm 1937.

缺叶钟报春（学名：Primula ioessa）为报春花科报春花属下的一个种。