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Cuticular studies of some species of Convolvulaceae used in traditional medicine in West Africa
Author(s) -
Gill L. S.,
Nyawuame H. G. K.
Publication year - 1991
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.19911020308
Subject(s) - convolvulaceae , trichome , biology , botany , ipomoea , convolvulus , ontogeny , weed , genetics
Epidermal structure and ontogeny of stomata in 30 species of the family Convolvulaceae from West Africa are described. The epidermal cells are irregularly shaped with arched or sinuous anticlinal and periclinal walls in most of the taxa studied. The cells of Calycobolus parviflorus (Mangenot) Heine and Merremia pterygocaulos (Steud. ex Choisy) Hallier f. are striated. The trichomes are variable: peltate glandular and uniseriate eglandular types have been recorded. Septate and unbranched trichomes have been observed in Convolvulus aschersonii Engl. The leaves are amphistomatic in the majority of the taxa presently investigated. However, hypostomatic leaves are recorded in Evolvulus alsinoides L., Ipomoea leari Paxt., I. nil (L.) Roth, I. pyrophila A. Chev., I. setosa Ker‐Gawl. and Lepistemon owariense (P. Beauv.) Haller f. Anisocytic stomata in C. parviflorus are reported here for the first time. Stomatal abnormalities viz: contiguous stomata in Convolvulus aschersonii and Ipomoea heterotricha Didr., aborted stomata in I. hederacea Jacq . and single guard‐celled stomata in C. parviflorus are reported here for the first time.