To which genus of Asteraceae does Liabum oblanceolatum belong? Vegetative characters have the answer

GUTIÉRREZ, D. G..; KATINAS, L.

BOTANICAL JOURNAL OF THE LINNEAN SOCIETY

Linnean Society of London

Lugar: London, England; Año: 2006 p. 479 - 486

0024-4074

The West Indian species Liabum oblanceolatum Urb. & Ekman was established on the basis of sterile young specimens represented by acaulescent herbs with rosulate leaves. However, these specimens have important traits that do not correspond to Liabum Adans. More than 90 genera of Asteraceae occur in Hispaniola (= Santo Domingo) island, but only 14 of them include species represented by acaulescent herbs with rosulate or grouped leaves at the base of the stem. From these genera, Chaptalia Vent. and Liabum are the most similar to the types of L. oblanceolatum. Habit, leaf arrangement, lamina shape, leaf margin, leaf surface, leaf margin intrasection, leaf venation, leaf pubescence, leaf trichomes, stomata, and upper surface leaf cuticle were analyzed in the type specimens of Liabum oblanceolatum and in species of Chaptalia and Liabum of Hispaniola island. Specially, the vegetative trichomes are described. The analysis reveals that the type specimens of Liabum oblanceolatum fit with all the vegetative traits of Chaptalia angustata Urb.