二色老鹳草 er se lao guan cao

Geranium kweichowense C. C. Huang; G. ocellatum var. yunnanense R. Knuth; G. tapintzense C. C. Huang.

Annuals. Stem 9-37 cm tall, erect or ascending, not rooting at nodes, with 0.4-2.4 mm patent nonglandular trichomes, 0.1-0.3 mm uncinate nonglandular trichomes, and usually 0.2-0.4 mm patent glandular trichomes. Stipules lanceolate, distinct. Leaves opposite; petiole with 0.5-2.7 mm patent nonglandular trichomes, 0.1-0.3 mm uncinate nonglandular trichomes, and usually 0.2-0.3 mm patent glandular trichomes; leaf blade 1.3-6.7 cm, palmately cleft, ratio of main sinus/middle segment length = 0.63-0.83, pilose with ± appressed nonglandular and glandular trichomes; segments 5-7, rhombic, 3-11 mm wide at base, 3-19-lobed in distal half, ratio of second sinus/middle segment length = 0.14-0.29. Cymules solitary, (1 or)2-flowered, sometimes grouped at nodes with short or no peduncles; peduncle (0-)1-9.4 cm. Pedicel 0.5-2.2 cm, with 0.1-0.3 mm patent to uncinate nonglandular trichomes and usually 0.3-0.5 mm patent glandular trichomes; bracteoles lanceolate. Sepals 3.4-7.2 mm, mucro 0.2-1 mm, ratio of mucro/sepal length = 0.05-0.21, outside with 0.1-2.2 mm ± patent nonglandular trichomes and 0.3-0.6 mm patent glandular trichomes, inside glabrous. Petals purplish with a dark basal spot, 3.1-7.5 mm, erect to patent, both surfaces glabrous, margin basally ciliate, apex rounded. Staminal filaments white with dark purplish apex, lanceolate, glabrous; anthers purplish, 0.7-1.1 mm. Nectaries 5, hemispheric, glabrous. Stigma dark purplish. Fruit 1-1.7 cm, erect when immature; mericarps transversely wrinkled, without a basal callus, glabrous; rostrum 0.8-1.4 cm, without a narrowed apex; stigmatic remains 0.2-0.7 mm. Seeds 1.3-2.4 mm. Fl. Feb-Apr, fr. Apr-May. 2n = 56.

Meadows, farmland; (700-)1600-2200 m. Guangxi, Guizhou, S Sichuan (Huili), Yunnan [Afghanistan, NE India, Kashmir, Nepal, Pakistan; Africa, W Asia].

Mericarps of Geranium ocellatum are quite similar to those of G. molle, although they have deeper transverse wrinkles. The spotted petals and dark anthers and stigma unequivocally identify G. ocellatum.