Regular ArticleLeaf anatomy ofRaouliaHook.f. (Compositae, Gnaphalieae)☆
Review articleOpen access
1998/03/01 Full-length article DOI: 10.1006/bojl.1997.0139
Journal: Botanical Journal of the Linnean Society
AbstractLeaf anatomy is compared for all species ofRaoulia.The species are tabulated according to their lamina structure. Noteworthy anatomical features are lamina type and grade of differentiation, stomatal position, epidermal and cuticle thickness, shape of mesophyll cells, presence or absence of central clear cells, sclerenchyma caps, abaxial collenchyma and protruding midrib. It is shown that leaf anatomy data provide characters which are taxonomically useful inRaoulia.The main subgenera are supported except that the leaf anatomy ofR. haastiiis anomalous and that ofR. youngiiis typical ofR.subg.Raouliarather thanR.subg.Psychrophyton.The leaf anatomy ofR. petriensisis unique in the genus.
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