Sentence:  Herbs with long creeping stolons; leaves with coarse white hairs, or glabrous. The arched corolla lobes and large <WSD>acumens</WSD> give the corolla a circular appearance with <WSD>acumens</WSD> standing out sharply from it. Corolla occasionally, however, substellate. 
Meaning of the word marked with <WSD> tags:  A sharp, tapering point extending from a plant.