Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Helga Rasbach"'
Publikováno v:
American Fern Journal. 94:113-125
New data on distribution, ecology and cytology of the Azorean endemic Asplenium azoricum are presented. Hybrids involving this species are recorded for the first time. The extremely rare, natural hybrid A. azoricum × A. scolopendrium is described as
Publikováno v:
Acta Botanica Gallica. 150:195-211
De recentes etudes cytologiques effectuees sur des specimens d'hybrides d'Asplenium rapportes a Asplenium Xpagesii Litard. au sens large (A. foreziense X A. trichomanes) ont permis de montrer, en se referant aux descriptions d'origine de R. de Litard
Publikováno v:
Bulletin de la Société Botanique de France. Actualités Botaniques. 138:187-195
ResumeL'etude cytologique de l'hybride Asplenium x sarniense Sleep (A. adiantumnigrum L. x A. billotii F.W. Schultz) qui n'avait pu etre effectuee lors de sa decouverte a Guernesey en 1971 a ete realisee sur un specimen recemment decouvert dans le Co
Publikováno v:
American Fern Journal. 84:11
Publikováno v:
Webbia. 33:449-456
Summary Examination of types has shown that Cheilanthes tinaei Tod. (1866) and C. corsica Reichstein et Vida (1973) belong to the same species. Synonymy, iconography and distribution of C. tinaei in Sicily is given together with distribution of C. ma
Autor:
Helga Rasbach, T. Reichstein
Publikováno v:
Webbia. 35:261-273
Summary The following four natural Cheilanthes hybrids are described: 1.—C. × teneriffae, the diploid hybrid of C. maderensis Lowe × pulchella Bory ex Willd. found in Tenerife (Canary Island) which, according to genome analysis (VIDA et al., 1981
Publikováno v:
Botanical Journal of the Linnean Society. 74:251-277
From studies in the field, botanic garden and herbarium we concluded that the following four species of Dryopteris grow on the Canary Islands: D. aemula (n= 41) so far found only on Gomera; D. pseudomas (n= 82, apogamous) similarly recorded only for
Publikováno v:
Webbia. 43:311-337
Summary Both, Asplenium petrarchae (Guerin) DC. and A. trichomanes L. are aggregate species that comprise diploid and tetraploid cytotypes. In A. trichomanes additionally a rare hexaploid cytotype exists. So far, two different hybrids between these a
Publikováno v:
Berichte der Deutschen Botanischen Gesellschaft. 90:527-530
Publikováno v:
American Fern Journal. 67:81
Asplenium trichomanes L. is an aggregate species of world-wide distribution. Diploid, tetraploid, and hexaploid (in Australia and New Zealand) cytotypes are known, the first two of which are polymorphic. Only a few of these forms have botanical names