密梗巴戟天 mi geng ba ji tian

Flowering heads 15-25, 1(-3)-flowered; peduncles ca. 2 mm. Calyx lobes often becoming white.

● Cultivated in Guangdong.

This taxon was originally published as a cultivar (Y. Z. Ruan in W. C. Chen, Fl. Reipubl. Popularis Sin. 71(2): 337. 1999), but it was not made clear if it is a well-known form that is deliberately selected and propagated or a wild-encountered form.