Geranium platyanthum Duthie

In Geranium platyanthum, the presence of glandular trichomes is almost constant along the whole plant. Geranium reinii Franchet & Savatier is a species endemic to Japan that is quite similar to G. platyanthum but with leaves slightly more divided.

Perennials. Rootstock ± horizontal, 6-11 mm in diam., not tuberculate, with thickened roots along rootstock. Stem 29-66 cm tall, erect, not rooting at nodes, with 0.6-1.5 mm patent nonglandular trichomes and usually 0.4-1 mm patent glandular trichomes. Stipules lanceolate, distinct. Leaves 1(or 2) alternate but opposite at inflorescence; petiole with 0.4-1.7 mm patent nonglandular trichomes and usually 0.5-1.2 mm patent glandular trichomes; leaf blade 4.8-13 cm, palmately cleft, ratio of main sinus/middle segment length = 0.6-0.75(-0.78), pilose with ± appressed nonglandular trichomes; segments 5, rhombic, (1-)1.7-2.3(-3.4) cm wide at base, 6-23-lobed in distal half, ratio of second sinus/middle segment length = 0.08-0.18. Cymules solitary or in aggregates at apex of each branch, 2-flowered; peduncle (0-)1.6-5.4 cm. Pedicel 2.8-16.8 mm, with 0.3-1.4 mm patent to retrorse nonglandular trichomes and 0.3-1.1 mm patent glandular trichomes; bracteoles linear- lanceolate. Sepals 6.4-10.8 mm, mucro 0.4-1.6 mm, ratio of mucro/sepal length = 0.06-0.19, outside with 0.2-1.2 mm antrorse appressed nonglandular trichomes and 0.5-1.8 mm patent glandular trichomes, inside glabrous. Petals purplish or white, (1-)1.2-1.9 cm, erect to patent, outside basally with trichomes, inside glabrous, margin basally ciliate, apex rounded. Staminal filaments purplish, lanceolate, abaxially pilose and proximal half ciliate, trichomes 2-3 mm; anthers bluish, 2.3-2.9 mm. Nectaries 5, hemispheric, glabrous. Stigma greenish to dull red. Fruit 2.8-4 cm, erect when immature; mericarps smooth, with a basal callus, with 0.1-1.4 mm ± patent nonglandular trichomes and 0.6-0.9 mm patent glandular trichomes; rostrum 2.3-3.4 cm, with a 4.8-9.8 mm narrowed apex; stigmatic remains 2.1-2.6 mm. Seeds 2.6-3.2 mm. Fl. Jun-Jul, fr. Aug-Sep. 2n = 28.

S Gansu, Hebei, Heilongjiang, W Hubei, Jilin, Liaoning, Nei Mongol, Ningxia, E Qinghai, Shanxi, Sichuan [Korea, Mongolia, E Russia].

Forests, scrub, meadows; 1000-2700 m.

Geranium eriostemon Fischer ex Candolle (1824), not Poiret (1812).

Erkəkciyi tükcüklü ətirşah (lat. Geranium eriostemon) - ətirşah cinsinə aid bitki növü.

Geranium platyanthum là một loài thực vật có hoa trong họ Mỏ hạc. Loài này được Duthie mô tả khoa học đầu tiên năm 1906.

毛蕊老鹳草（学名：Geranium platyanthum）是牻牛儿苗科老鹳草属的植物。分布在俄罗斯西伯利亚、蒙古、朝鲜、远东地区以及中国大陆的湖北、西北、东北、华北、四川等地，生长于海拔350米至3,500米的地区，常生长在山地林下、灌丛中或草甸，目前尚未由人工引种栽培。