Nama hispidum, N. lobbii, N. rothrockii, and N. xylopodum have two basic types of trichomes on the adaxial and abaxial surfaces: glandular and nonglandular. Nama hispidum and N. xylopodum have (1) short semierect or intermediate-length acicular trichomes that often recurve toward the leaf surface and (2) short-stalked capitate glands. The larger acicular trichomes have micropapillae. Nama lobbii has long filiform trichomes and sessile capitate glands. Nama rothrockii has erect, smooth subulate trichomes and long-stalked capitate glands. Morphological diversity of trichomes in Nama and their possible functional significance as a predator defense are discussed.
Binder, Bradley F.
"Trichomes of Nama (Hydrophyllaceae) That Produce Insect-active Compunds,"
Aliso: A Journal of Systematic and Evolutionary Botany:
1, Article 4.
Available at: http://scholarship.claremont.edu/aliso/vol14/iss1/4
© 1995 Bradley F. Binder
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