Abstract
Nutlet sculpturing of 22 taxa ofScutellaria sect.Resinosa, representing 18 of its 19 species, and the monotypic genusSalazaria was studied by scanning electron microscopy (SEM). The nutlets of sect.Resinosa, while remarkably variable among themselves, differed from hypothetically closely related sections in lacking circumferential banding and sessile glands. Species could be grouped by surface sculpturing into seemingly meaningful phenetic clusters.Scutellaria potosina var.platyphylla was sufficiently distinct micromorphically so as to be elevated to specific status asScutellaria platyphylla comb. and stat. nov. The significance of nutlet microcharacters within sect.Resinosa is discussed, especially as compared to closely related sections. The genusSalazaria had nutlet sculpturing quite different from all taxa belonging to sect.Resinosa.
Similar content being viewed by others
References
Cantino, P. D., Harley, R. M., Wagstaff, S. J., 1992: Genera of theLabiateae: status and classification. — InHarley, R., Reynolds, T., (Eds): Advances inLabiatae science, pp. 511–522 — Kew: Royal Botanic Gardens. pp. 511–522.
Epling, C., 1942: The American species ofScutellaria. — Univ. California Publ. Bot.20: 1–146.
Husain, S. Z., Marin, P. D., Šilic, Č., Qaiser, M., Petković, B., 1990: A micromorphological study of some representative genera in the tribeSaturejeae (Lamiaceae). — Bot. J. Linn. Soc.103: 59–80.
Lane, T. M., 1983: Mericarp micromorphology of Great PlainsScutellaria (Labiateae). Southw. Naturalist28: 71–89.
Marin, P. D., Petković, B., Duletić, S., 1994: Nutlet sculpturing of selectedTeucrium species (Lamiaceae): a character of taxonomic significance. — Pl. Syst. Evol.192: 199–214.
Olmstead, R., 1989: Phylogeny, phenotypic evolution, and biogeography of theScutellaria angustifolia complex (Lamiaceae): inference from morphological and molecular data. — Syst. Bot.14: 320–328.
—, 1990: Systematics of theScutellaria angustifolia complex (Labiateae). — Contrib. Univ. Michigan Herb.17: 223–265.
Penland, C. W., 1924: Notes on North American Scutellarias. — Rhodora26: 61–89.
Turner, B. L., 1994: A taxonomic overview ofScutellaria, sectionResinosa (Lamiaceae). — Phytologia76: 345–382.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Turner, B.L., Delprete, P.G. Nutlet sculpturing inScutellaria sect.Resinosa (Lamiaceae) and its taxonomic utility. Pl Syst Evol 199, 109–120 (1996). https://doi.org/10.1007/BF00985921
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00985921