John D. Bacon, The University of Texas at Arlington

Systematics of Nama (Hydrophyllaceae): Seed Coat Morphology of Lemmonia californica ajd Nama Species allies with Nama demissum

DOI

10.5642/aliso.19871104.03

First Page

441

Last Page

450

Abstract

Seed coat morphology of Lemmonia californica. long held to be a relative of Nama, was examined using scanning electron microscopy. Its seed coat exhibits reticulum cells with undulate cell walls and columnar radial wall thickenings. Seed coat structure in nine species of Nama, N. demissum, N. aretioides, N. densum, N. parviflorumm, N. pusillum, N. depressum, N. dichotomum, N. sericeum and N. origanifolium, members forming one of six seed groups in Nama, also exhibit reticulum cells with undulate walls and columnar wall thickenings. The Nama species and Lemmonia are remarkably similar in testa organization, suggesting that the relationship of the two may well be closer than the generic status accorded Lemmonia would indicate.

Recommended Citation

Bacon, John D. (1987) "Systematics of Nama (Hydrophyllaceae): Seed Coat Morphology of Lemmonia californica ajd Nama Species allies with Nama demissum," Aliso: A Journal of Systematic and Floristic Botany: Vol. 11: Iss. 4, Article 3.
Available at: https://scholarship.claremont.edu/aliso/vol11/iss4/3