J Syst Evol ›› 1987, Vol. 25 ›› Issue (5): 390-392.

• Research Articles • Previous Articles     Next Articles

On the Difference Between Elachanthemum Y. Ling et Y. R. Ling and Stilpnolepis Krasch.

Ling Yeou-Ruenn   

  1. (South China lnstitute of Botany, Academia Sinica, Guangzhou)
  • Published:1987-10-18

Abstract: It is quite unreasonable reducing Elachanthemum Y. Ling et Y. R. Ling into Stilprolepis Krasch. and it is so wrong idea attributing the achenes and cupuliform corolla (as a matter of fact, the cupuliform corolla is originally from the Stilpnolepis Krasch., not from Elachanthemum Y. Ling et Y. R. Ling) of Elachanthemum Y. Ling et Y. R. Ling to “earlier Development” in the paper published in Act. Phytotax. Sin. 23(6): 470-472. 1985. In Elachanthemum Y. Ling et Y. R. Ling, bracts of capitula herbaceous, obviously floccose on the abaxial surface and membranaceous only on the margin, corolla of bisexual florets tubular, achenes oblique, obovoid, and the exine of pollen grains minutespinulate, but in Stilpnolepis Krasch., on the contrary, whole bracts membranaceous, glabrous, corolla of hermaphrodite florets cupuliform or campanulate, achenes long-clavate or fuciform and the exine of pollen grains remarkably spiny.

Key words: Elachanthemum, Stilpnolepis, taxonomical discussion