Leaf and twig anatomy of the Pterostemonaceae (Engl.) Small: ecological and systematic features |
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Authors: | HAZEL P. WILKINSON F.L.S. |
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Affiliation: | Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS U.K. |
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Abstract: | An anatomical investigation of the leaves and twigs of Pterostemonaceae (Engl.), a monogeneric family of two species, has been made. The following anatomical characters in the leaf are of particular interest: glandular hairs, hydathodes on the marginal dentations and secretory substances in the glands and palisade cells. Characters of interest in the twig xylem include: vessel lumina of very small tangential diameter and with simple perforation plates; fibriform vessels with scalariform plates having one to six bars and also plates with perforations in irregular patterns. |
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Keywords: | Fibriform vessels hydathodes leaf domatia peltate glands secretory substances |
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