Pternopetalum latipinnulatum - Broadleaf Sac-Petal

Broadleaf Sac-Petal is a perennial herb, 22-60 cm tall. Stems are erect, simple or 1-2 branched, hairless. Leaves are 5-8, mostly basal; basal leaves papery, stalked, with about 15 cm long leaf-stalks; blade quadrilateral, 3-6 x 5-8 cm in outline, ternate 2-pinnate; pinnae 3 paired, ultimate leaf segments lanceshaped, rhomboidal or ovate, 2-3.5 x 1.2-1.5 cm broad. Blades bristly along margins, margin incised-sawtoothed, tip pointed; at branch-ends ultimate segments rhomboidal to ovate, usually pointed at the tip and wedge-shaped at the base. Stem leaves are 1 in each stem, ternate-pinnate, homomorphic with basal leaves, with brief and broad sheath, membranous. Flowers are borne in umbels at branch-ends, usually 1 on each stem; rays 12-35, unequal, 1.3-3.6 cm in flowering, 2.5-4 cm in fruiting; umbellules unequal 2-3 flowered; flower-stalks about 2 mm. Sepal-cup teeth are distinct, lanceshaped to linear, about 0.4 mm. Petals are white, about 1.6 x 0.8 mm, with inflexed tip. Stylopodium conic; styles erect about twice the length of the stylopodium. Fruit is green, ovoid or oblong, 2-3 x 0.8-1.5 mm; ribs finely rough. Broadleaf Sac-Petal is found in Arunachal Pradesh and China. Flowering: May-August.