Carex borealifujianica (Cyperaceae), a new species of the core Carex clade from Fujian, southeastern China

A new species, Carex borealifujianica Y.F. Lu & X.F. Jin (Cyperaceae, sect. Occlusae of core Carex clade) is described and illustrated from northern Fujian, China. In addition to morphological comparisons with its relatives, comparative micromorphology of utricles and achenes of seven species in...

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Bibliographic Details
Published in:PloS one 2022-03, Vol.17 (3), p.e0264419-e0264419
Main Authors: Lu, Yi-Fei, Jin, Xiao-Feng, Yu, Ming-Jian
Format: Article
Language:English
Subjects:
Biodiversity
Biology and Life Sciences
Carex
Carex Plant - genetics
China
Chloroplast DNA
Chloroplasts
Computer and Information Sciences
Cyperaceae
Cyperaceae - genetics
Deoxyribonucleic acid
DNA
Flowers
Flowers & plants
Laboratories
Life sciences
Morphology
New species
Phylogenetics
Phylogeny
Physical Sciences
Research and Analysis Methods
Sheaths
Taxonomy
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Description
Summary:A new species, Carex borealifujianica Y.F. Lu & X.F. Jin (Cyperaceae, sect. Occlusae of core Carex clade) is described and illustrated from northern Fujian, China. In addition to morphological comparisons with its relatives, comparative micromorphology of utricles and achenes of seven species in Carex sect. Occlusae was examined. Micromorphology of utricles and achenes revealed the similarity of Carex borealifujianica and C. ligulata. Morphologically, this new species is similar to Carex ligulata in having lateral spikes remote and densely flowered, as well as utricles densely hispidulous, but differs in having 2 or 3 narrowly clavate staminate spikes, leaves 2.5-5 mm wide with sheaths sparsely pilose, and achenes emarginate at the apex. The phylogenetic analysis from two nuclear DNA regions (ETS and ITS) and two chloroplast DNA regions (matK and trnL-F) of 68 taxa resolved C. borealifujianica as a distinct species.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0264419