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- Title
DISTRIBUTION AND SYSTEMATICS OF <em>BATRACHOSPERMUM</em> (BATRACHOSPERMALES, RHODOPHYTA) IN NORTH AMERICA. 1. SECTION <em>CONTORTA</em>.
- Authors
Sheath, Robert G.; Vis, Morgan L.; Cole, Kathleen M.
- Abstract
Multivariate morphometrics and image analysis were used to determient he number of well-distinguished infrageneric taxa in the section Contorta of the freshwater red algal genus Batrachospermum in North America. Five groupings were distinguished from 29 populations examined from New Mexico to costa Rica. These entities were statistically related to 12 type specimens reported from or similar to North American populations. The following taxa were recognized: B. ambiguum Montagne (syn. B. bicudoi Necchi and B. basilare Fling et Skuja) B. globosporum Israelson (syn. B. cipoense Kumano et Necchi and B. Jolyi Necchi), B. intortum Jao, B. louisianae Skuja and B. Procarpum Skuja var. americanum var. nov. The new variety differs from the nominate variety in having significantly larger whorls and smaller carpogonia. Batrachospermum ambiguum, B. louisianae, and B. procarpum var. americanum occur in low ion waters (10-187 μS·cm[SUP-1]), whereas B. intortum and B. globosporum are found in h igh ion waters (260-1760 μS·cm[SUP-1]). Detailed descriptions and a key to the five taxa are given.
- Subjects
NORTH America; BATRACHOSPERMUM; RED algae
- Publication
Journal of Phycology, 1992, Vol 28, Issue 2, p237
- ISSN
0022-3646
- Publication type
Article
- DOI
10.1111/j.0022-3646.1992.00237.x