Chusquea sect. Tenellae (Bambuseae, Bambusoideae, Poaceae), a taxonomic revision of a new section from South America

• DOI: 10.11646/phytotaxa.324.3.2
• Publication Date: 2017-10-13T04:30:27Z
• Authors: LAKSHMI ATTIGALA; ALFREDO F. FUENTES; LYNN G. CLARK
• Keywords: Subgenus; Synapomorphy; Leafy; Sect

The Chusquea ramosissima informal group, including four named species, is classified within subg. based on morphological characters, but has not been rigorously studied in its entirety. putative synapomorphies distinguishing the C. group from remainder of are presence a pseudopetiolate culm leaf blade that remains green and synflorescences borne mix longer leafy shorter non-leafy subsidiary branches per node, features unknown rest subgenus or genus as whole. In addition, species share bud complement with set 1–4 laterally compressed, + falcate buds each side positioned facing other, central parallel sides broadly triangular apex, thin-textured spikelets. Because this unique combination two Chusquea, molecular support, we here formally describe sect. Tenellae to accommodate group. Five distributed Argentina, Brazil, Bolivia, Paraguay Uruguay, included newly recognized Tenellae: fasciculata, ramosissima, tenella, tenuiglumis, described ovatifolia. This revision includes comparison five previously sections detailed descriptions for Tenellae, line illustrations images all maps their distributions, keys identification. names tenuiglumis var. laxiuscula subcylindrica lectotypified.