Go to Naturalis.nl

Search results

Record: oai:ARNO:526337

AuthorLorenzo R. Parodi
TitleThe Andean species of the genus Stipa allied to Stipa obtusa
JournalBlumea. Supplement
AbstractA taxonomic study of the 6 species of Stipa that inhabit desert regions of the Puna de Atacama S. Bomani Haum., S. venusta Phil., S. obtusa [Nees et Mey.] Hitchc., S. rigidiseta [Pilg.] Hitchc., S. saltensis O. Kuntze, and the new species S. Henrardiana) indicates that they constitute a natural group which I designate Obtusae, using as type the species S. obtusa which is the one with priority. The group is characterised by setose leaves, with ligules 3 to 10 mm long, by glumes that are scarious, smooth, depressed and usually unequal, by the fusiform anthoecium with the palea as long as the lemma and by glabrous anthers. These characters reveal a close relationship with Orthachne Nees and Oryzopsis Michx. More detailed studies are necessary to decide the generic relationships.
Some of the species studied ( S. Bomani and S. saltensis) contain cyanoglucosides in their vegetative organs and consequently are feared by the inhabitants of the Puna as being toxic to livestock.
Document typearticle
Download paperpdf document http://www.repository.naturalis.nl/document/566757