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BIOSYSTEMATICS OF THE GENUS HYDROPHYLLUM L. (HYDROPHYLLACEAE)
Author(s) -
Beckmann Robert L.
Publication year - 1979
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1979.tb06321.x
Subject(s) - disjunct , biology , herbarium , genus , botany , mesophyte , disjunct distribution , zoology , population , phylogenetic tree , biochemistry , demography , deciduous , sociology , gene
Hydrophyllum is a group of mesophytic herbs occurring in two disjunct groups in North America. The genus is a natural taxonomic entity with the constituent species showing low levels of variability. Morphological similarities of the disjunct species suggest a close affinity between H. tenuipes and H. virginianum and a lesser, yet distinct, affinity between H. occidentale and H. macrophyllum . Biosystematic studies that included herbarium comparisons, field descriptions, artificial hybridizations, chromatographic studies, and electrophoretic analyses characterize the interrelationships of the various species.