Product Code Database
Andreaea is a genus of rock described by Johann Hedwig in 1801. Hedwig, Johann. 1801. Species Muscorum Frondosorum 47-49 in Latin Tropicos, Andreaea Hedw. Flora of North America, Vol. 27 Page 102, Andreaea Hedwig
They are small, delicate acrocarpous mosses (meaning that the capsules are formed at the tips of vertical branches) that form dark brown or reddish cushions on wet siliceous rocks in mountainous areas. The capsule lacks the peristome teeth and operculum of other mosses, and opens by splitting along 4 vertical slits, the four valves remaining joined at the base and apex. The capsule of Andreaea has no seta, but the sporophyte ( Spf in the diagram below) instead is supported by a pseudopodium ( ps) derived from gametophyte tissue, as in Sphagnum and the columella is enclosed within the sporangium. The spores germinate to give thalloid protonemata.Abramov, I. I. & A. L. Abramova. 1983. Konspekt flor'i mhov Mongol'skoj Narodnoj Respubliki. Biologiceskie Resursy i Prirodnye Uslovija Mongol'skoj Narodnoj Respubliki 17. 221 pp.Florschütz-de Waard, J. & P. A. Florschütz. 1979. Estudios sobre criptógamas Colombianas III. Lista comentada de los musgos de Colombia. Bryologist 82: 215–259Kis, G. 1985. Mosses of South-East Tropical Africa, an annotated list with distributional data 170 pp. Institute of Ecology and Botany of the Hungarian Academy of Sciences, VácrátótMahú, M. 1979. Familias y géneros de musgos Chilenos. Bryologist 82: 513–524Greene, D. M. 1986. Conspectus of the Mosses of Antarctica, South Georgia, the Falkland Islands and Southern South America, 314 pp. British Antarctic Survey, Cambridge
|
|
