Inflorescences structure of Cyperus L. section Luzuloidei (Cyperaceae)

GUARISE, NICOLAS; VEGETTI, ABELARDO

PLANT SYSTEMATICS AND EVOLUTION

SPRINGER WIEN

Lugar: Viena (Austria); Año: 2008 p. 41 - 63

0378-2697

In the present work the in.orescences of 12 species of Cyperus sect. Luzuloidei Kunth sensu Ku¨ kenthal were analyzed using the methodology and terminology of Troll’s school. All the in.orescences studied are polytelic (indeterminate). The in.orescences are anthela-like or capitate, and can be terminal or pseudolateral. Below the main .orescence a paracladial zone is present. In this zone three types of branching were observed, i.e. normal, accessory-axillar and prophyllar branching, whose position vary among the di.erent species. In the paracladial zone a subzone of long paracladia and a subzone of short paracladia were observed. In the short paracladial subzone the spikelets are clustered in fascicles, which can be serial, prophyllar or mixed. Variation in length and position of pherophylls, length of prophyll, number and degree of branching were noticed. The systematic value of the in.orescence in the section Luzuloidei is discussed.