云南亚菊 yun nan ya ju

Tanacetum elegantulum W. W. Smith, Notes Roy. Bot. Gard. Edinburgh 10: 201. 1918; Chrysanthemum elegantulum (W. W. Smith) Handel-Mazzetti

Herbs, perennial, 25-50 cm tall, with small woody rootstock. Stems many, slender, unbranched, erect or ascending, thinly silvery gray tomentose. Stem leaves ca. 2 × 1.5 cm, both surfaces gray tomentulose, 3-pinnatisect; ultimate segments linear, 2-3 × 0.5-0.6 mm. Distal leaves less dissected, those subtending synflorescence linear, ca. 1 cm. Synflorescence a terminal flat-topped panicle; peduncles to 1.4 cm, grayish white. Immature capitula 3-4 mm in diam. Outer phyllaries linear or lanceolate, 2-3 mm, grayish white tomentulose; middle and inner ones lanceolate or elliptic, abaxially ± tomentulose, adaxially straw-colored scarious.

● Yunnan.

Ajania elegantula seems to be known only from the original immature collections and was regarded as insufficiently known in the FRPS account of Ajania. However, the elegant, finely dissected leaves are very distinctive, and it seems justifiable to accept it as a good species.