SYSTEMATICS OF ANADYOMENE SPECIES (ANADYOMENACEAE, CHLOROPHYTA) IN THE TROPICAL WESTERN ATLANTIC1
Authors:
- 1 February 1991
- journal article
- Published by Wiley in Journal of Phycology
- Vol. 27 (1) , 101-118
Abstract
Three new species of Anadyomene are described. Anadyomene lacerata has pinnately branched veins and a unique lacerated margin formed by elongated vein cells. Anadyomene linkiana consists of a perforate blade arising by polychotomous branching from a distinct stripe, and A. howei has an eperforate, delicate blade of polychotomously branched cells and a smooth margin of elongated vein cells. Distinguishing features of the five previously described species are clarified, and all eight taxa are illustrated. Observations in the field and from more than 400 herbarium specimens form the basis for a discussion of Indo‐Pacific affinities, ecological adaptations, cell division, reproduction, and ordinal status.A phylogenetic analysis based on 17 equally weighted characters produced a cladistic gradation, indicating that Anadyomene is a monophyletic genus. The most basal species (A. saldanhae, A. linkiana, A. howei, A. menziesii) show only polychotomous branching. In contrast, the distal group (A. pavonina, A. stellata, A. rhizoidifera, A. lacerata) have pinnate interstitial cells along the veins in addition to polychotomous branching at the vein apices.Keywords
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