An update on the taxonomy of Calamagrostis nagarum (Bor) G.Singh and its allies (Poaceae, Agrostidinae): morphometrics and micro-morphology

By

Prasad, Dileshwar
Kumar, Ravindra
Jaiswal, Shubham
Grat︠s︡īanov, V. I.
Tiwari, Smita
Agnihotri, Priyanka

Type

Article

Date of Publication

2022

Original Publication

PhytoKeys

Volume

212

Pages

135--155

Subjects

Cool season grass , Deyeuxia , lectotypification , Micro-morphology , taxonomy , Western Himalaya

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.212.89253

 

Abstract

Calamagrostis nagarum, previously considered to be a poorly known species, has been reassessed taxonomically. It is a member of C. lahulensis-C. scabrescens complex and may be segregated by morphological characters such as the presence of pilose hairs on adaxial surface of leaf blades, spreading panicle branches, filiform awn and nerve prolongation of lemma. Besides, the micromorphology of adaxial surface of leaf blades, dorsal surface of glume and lemma differentiates Calamagrostis nagarum from its allies, C. lahulensis and C. scabrescens. It is known from Nagaland and Uttarakhand, India, and Bhutan. In this study, we have provided an emended description of the species, a discussion of its habitat and distribution, and taxonomic notes along with field photographs and photo plates for its correct identification. In addition, we also lectotypify the names C. lahulensis and C. scabrescens.