Reproductivity, fertility and range of Syrrhopodon texanus Sull. (Musci; Calymperaceae), a North American endemic

Syrrhopodon texanus Sull. is a dioicous moss endemic to eastern North America. It occurs mainly as two apparently allopatric populations: one in the Atlantic and Gulf coastal plains and the other in the interior. Smaller, isolated, outlying populations also occur. Ninety-five (about 19%) of the 509...

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Bibliographic Details
Published in:The Bryologist 1984-01, Vol.87 (3), p.217-222
Main Author: Reese, W.D
Format: Article
Language:English
Subjects:
America
AMERICA DEL NORTE
AMERIQUE DU NORD
Biological and medical sciences
BRYOPHYTA
Chorology
Coastal plains
DISTRIBUCION NATURAL
DISTRIBUTION NATURELLE
FERTILIDAD
FERTILITE
FERTILITY
Fundamental and applied biological sciences. Psychology
Herbaria
Leaves
Mosses
NATURAL DISTRIBUTION
NORTH AMERICA
Periodicity
Plant collections
Plant cytology, morphology, systematics, chorology and evolution
Plant reproduction
Plants
REPRODUCCION
REPRODUCTION
Sporophytes
Syrrhopodon texanus
Vegetative growth
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Summary:Syrrhopodon texanus Sull. is a dioicous moss endemic to eastern North America. It occurs mainly as two apparently allopatric populations: one in the Atlantic and Gulf coastal plains and the other in the interior. Smaller, isolated, outlying populations also occur. Ninety-five (about 19%) of the 509 herbarium specimens studied included plants bearing gemmae on specialized leaves at the stem tips at the time of collection. There is marked periodicity in gemma production, which becomes important in August (33% of the specimens collected in that month) and peaks in September (50% of the specimens collected in that month), declining thereafter. Only 28 (about 5.5%) of the specimens, all from coastal plain sites, included plants bearing sporophytes. Male plants seem to be very rare; they were found only with sporophyte-bearing female plants in the coastal plain. Female plants are common, and apparently only female plants occur over most of the range of this moss.
ISSN:0007-2745
1938-4378
DOI:10.2307/3242794