scholarly journals Comparative morphology of the foliage leaf epidermis, with emphasis on papillae characters, in key taxa of woody bamboos of the Asian tropics (Poaceae: Bambusoideae)

2008 ◽  
Vol 156 (3) ◽  
pp. 411-423 ◽  
Author(s):  
HAN-QI YANG ◽  
HONG WANG ◽  
DE-ZHU LI
Phytotaxa ◽  
2017 ◽  
Vol 299 (1) ◽  
pp. 111
Author(s):  
YUGUANG LIU ◽  
WEIJIAN LI ◽  
MING TANG ◽  
GUANGYAO YANG ◽  
WENGEN ZHANG

In the present study, we employed a classical taxonomic analysis of micromorphological characters of the leaf epidermis to reassess the taxonomy of four Gelidocalamus taxa, a genus of woody bamboos endemic to China. We propose that G. subsolidus is distinct from G. tessellatus, and G. albopubescens should be placed in synonymy under G. subsolidus. A formal taxonomic treatment is presented, including description, comments, illustrations, a distribution map, and SEM images of the abaxial leaf epidermis.


Phytotaxa ◽  
2014 ◽  
Vol 161 (3) ◽  
pp. 201 ◽  
Author(s):  
Aline Costa Mota ◽  
REYJANE PATRÍCIA DE OLIVEIRA ◽  
LYNN G. CLARK

Brazil includes a very high diversity of bamboos, but this diversity is far from completely known. We increase the list of Brazilian woody bamboos by describing two new species of Chusquea, which belong to subgenus Rettbergia. Chusquea ciliatifolia sp. nov. differs from other species of this subgenus by its mottled culms, distinctly ciliate margins of the foliage leaf blades and pilose synflorescences; and C. mirabilis sp. nov. by the presence of branches with sericeous girdles. Both C. ciliatifolia and C. mirabilis occur exclusively in the Atlantic Forest, from the states of Bahia and Minas Gerais, known only from five and three populations, respectively. Comments on morphology, taxonomic relationships, ecological aspects, and conservation status of these new species are provided.


Phytotaxa ◽  
2016 ◽  
Vol 275 (2) ◽  
pp. 81 ◽  
Author(s):  
YING MENG ◽  
JIA-JIAN WANG ◽  
ZE-LONG NIE

To investigate the possibility of using leaf epidermal characters for species identification in developing a classification for Maianthemum, we examined leaf epidermal features from across the geographic distribution of the genus, including sampling of 34 species, one subspecies and one variety, and used light and scanning electron microscopy to make observations of these features. Our results suggest that the shape of epidermal cells, and anticlinal walls on both the abaxial and adaxial leaf surface have systematic significance for defining Maianthemum taxa and are congruent with clades inferred using molecular phylogenetics. The pattern of anticlinal walls in the genus seems to be related to the geographic distribution and environmental conditions. Other characters yielded in this study including anomocytic stomata, elliptic to narrow elliptic guard cells, wrinkled, striate or nearly smooth cuticle, smooth or sinuolate to erose inner margin of the outer stomatal rim, are not useful for taxon circumscription in the genus.


2019 ◽  
Vol 192 (1) ◽  
pp. 21-33
Author(s):  
Lynn G Clark ◽  
Ximena Londoño ◽  
Christopher D Tyrrell ◽  
Emmet J Judziewicz

Abstract Aulonemiella (Poaceae: Bambusoideae: Bambuseae: Arthrostylidiinae), a new Andean genus from Colombia and Ecuador, is described and illustrated. It is characterized by its delicate scandent, vining habit, filiform to narrowly triangular, reflexed culm leaf blades, short, delicate foliage leaf fimbriae, synflorescences with subtending bracts and prophylls, awnless spikelets in spicate to racemose synflorescences and clavate rachilla internodes. The new species Aulonemiella laegaardii (southern Ecuador) is described, and the new combination A. ecuadorensis (Colombia and northern Ecuador) is made. Aulonemiella laegaardii is smaller overall and more delicate than A. ecuadorensis; it is also distinguished by its filiform, recurved culm leaf blades and paleas shorter than the lemmas. The culm leaf blades of A. ecuadorensis are narrowly triangular and straight, and its paleas are subequal to the lemmas; in addition, the synflorescence axes of A. ecuadorensis are usually apically zigzag at maturity.


2009 ◽  
Vol 160 (1) ◽  
pp. 93-109 ◽  
Author(s):  
QIANG WANG ◽  
SONG-DONG ZHOU ◽  
XIAO-YAN DENG ◽  
QI ZHENG ◽  
XING-JIN HE

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