Comparative Leaf Morpho-anatomical Studies of two South American Species of Cardiospermum (Sapindaceae) with Special Reference to Adaxial Domatia
Morphological and anatomical studies of leaves of two closely related Cardiospermum species from South America, C. procumbens and C. pterocarpum, were assayed. Both species have amphistomatic leaves, anomocytic stomata, non-glandular and glandular trichomes, secretory
cells present in the epidermis and mesophyll, bifacial structure, and the cuticle showing concentric striae around the stomata. Tunnel-type domatia were found in C. procumbens, at laminar base at the junction of the three principal veins on the adaxial surface. These domatia are interpreted
as an apomorphic character for the genus and tribe within the Sapindaceae. In C. pterocarpum domatia are exceptionally present. This is the first record of adaxial domatia in Sapindaceae.
Keywords: ADAXIAL DOMATIA; AMPHISTOMATIC LEAF; BIFACIAL STRUCTURE; CARDIOSPERMUM; TUNNEL DOMATIA
Document Type: Research Article
Publication date: 01 May 2006
- Blumea is an international journal on the biodiversity, evolution and biogeography of plants, including topics on systematics, floristics, phylogeny, morphology and anatomy. For floristic studies, the focus is on tropical Africa south of the Sahara, tropical Southeast Asia with a strong emphasis on Malesia, and South America with emphasis on the Guianas. Papers in Blumea are subjected to peer review and are in English. Blumea is published three times a year, comprising c. 300 pages in total.
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