New Species and Combinations in the Genera Sigesbeckia and Trigonospermum (Compositae: Melampodiinae)
- 1 January 1978
- journal article
- research article
- Published by Springer Nature in Brittonia
- Vol. 30 (1) , 64-68
- https://doi.org/10.2307/2806460
Abstract
Two new species and a new combination ofSigesbeckia are proposed, the latter being a species-transfer from the genusTrigonospermum. A new species ofTrigonospermum is also proposed. Heretofore, these two genera have been placed in different subtribes:Trigonospermum in Melampodiinae;Sigesbeckia in Verbesininae, the former being distinguished by its sterile disk florets. This is believed to be a technical distinction, reliance upon which creates unnatural alliances. It is proposed that the description ofSigesbeckia be emended such as to possess either fertile or sterile disk florets.This publication has 0 references indexed in Scilit: