A New Species of Merostachys (Poaceae, Bambusoideae, Bambuseae) and Synopsis of the Genus in Argentina and Neighboring Regions

A new species of Merostachys from the Bolivian Yungas, Merostachys yungasensis, is described and illustrated. Merostachys yungasensis is compared to other taxa distributed in Argentina, Bolivia, Paraguay, and Peru, in a table based on morphological characters. Additional micromorphological character...

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Bibliographic Details
Published in:Systematic botany 2011-10, Vol.36 (4), p.896-906
Main Authors: Lizarazu, Mabel A, Agrasar, Zulma E. Rúgolo de, Vega, Andrea S
Format: Article
Language:English
Subjects:
Argentina
Bamboo
Bamboos
Bambusoideae
Bolivia
Botany
Discovery and exploration
Distribution
Glumes
Grasses
Hair
Identification and classification
Inflorescences
Leaf blade
Leaves
lectotypes
Merostachys
Morphology
Natural history
New species
Nomenclature
Paraguay
Physiological aspects
Plant spines
Poaceae
species identification
Spikelets
Taxonomy
Citations: Items that cite this one
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Description
Summary:A new species of Merostachys from the Bolivian Yungas, Merostachys yungasensis, is described and illustrated. Merostachys yungasensis is compared to other taxa distributed in Argentina, Bolivia, Paraguay, and Peru, in a table based on morphological characters. Additional micromorphological characters of foliage leaf blade and cauline epidermis are included. In Argentina two species are confirmed: M. claussenii and M. multiramea; the latter species constitutes a new report for this country and is excluded from Paraguay. The specific epithet of M. claussenii is emended, and a lectotype is here designated. Two new synonyms are recognized for M. claussenii and its presence is confirmed from Paraguay after an analysis of previous reports based on misidentifications. The taxa are illustrated. A key for the identification of the species, based on vegetative and reproductive characters, is also provided.
ISSN:0363-6445
1548-2324
DOI:10.1600/036364411X604912