Original Research

Leaf anatomy of the South African Danthonieae (Poaceae). XVI. The genus Urochlaena

R. P. Ellis
Bothalia | Vol 18, No 1 | a990 | DOI: https://doi.org/10.4102/abc.v18i1.990 | © 1988 R. P. Ellis | This work is licensed under CC Attribution 4.0
Submitted: 21 October 1988 | Published: 23 October 1988

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R. P. Ellis, Botanical Research Institute, Department of Agriculture and Water Supply, South Africa

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The leaf blade anatomy of Urochlaena pusilla Nees is described and illustrated. The transectional anatomy is non- Kranz with diffuse but uniformly distributed chlorenchyma. The abaxial epidermis has dome-shaped stomata, dumbbell­shaped silica bodies, elongated finger-like microhairs, and cushion-based macrohairs may or may not be present. This type of arundinoid anatomy closely resembles that o f  Tribolium Desv.,  Chaetobromus Nees,  Schismus Beauv., and certain species of Pentaschistis Stapf.  Urochlaena pusilla is very similar to  Tribolium utriculosum (Nees) Renv. in leaf anatomy and these two species appear to be closely related.


Danthonieae; leaf anatomy; Poaceae; <i>Urochlaena</i>


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