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of 16
pro vyhledávání: '"Eric E. Karrfalt"'
Autor:
Eric E. Karrfalt
Publikováno v:
American Fern Journal. 89:198
The gametophyte generation of Isoetes andicola was investigated anatomically and using microspectrophotometry. Microsporangia, which sometimes additionally contained a few abortive megaspores, produced numerous microspores that developed apparently f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1440d3786e3c3e5f85ece16244033b3
https://doi.org/10.2307/1547422
https://doi.org/10.2307/1547422
Autor:
Eric E. Karrfalt, Donald A. Eggert
Publikováno v:
Botanical Gazette. 138:357-368
Branching of the root-bearing portion of the corm of Isoetes is reported for the first time. The specimens range in age from about 3 to 36 yr and show a wide variety of structural variations. The main characteristic shared by all of the branched plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9195e878bd6c678540e886db6c8740ea
https://doi.org/10.1086/336935
https://doi.org/10.1086/336935
Autor:
Eric E. Karrfalt
Publikováno v:
Botanical Gazette. 143:439-445
True secondary development, which arises in the more or less mature cortex and not from the circumstelar, primary meristem, is described in three species of Isoetes. The secondary cortex develops in relation to the process of furrow formation and to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fffafa4e56403d96b0f4135d2b86fa0a
https://doi.org/10.1086/337319
https://doi.org/10.1086/337319
Autor:
Eric E. Karrfalt
Publikováno v:
American Journal of Botany. 71:1023-1030
The patterns of root arrangement and stelar morphology in the Lower Cretaceous fossil Nathorstiana are essentially identical with those of extant Isoetes. These structural similarities imply a similar mode of development in both plants and are used t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afc954bff408575a808b4345cf91033d
https://doi.org/10.1002/j.1537-2197.1984.tb11953.x
https://doi.org/10.1002/j.1537-2197.1984.tb11953.x
Autor:
Eric E. Karrfalt
Publikováno v:
Botanical Gazette. 136:236-245
The cortical-bundle system of the composite genus Adenocaulon has been studied from material of A. lyratum, A. bicolor, A. chilense, A. himalaicum, and A. adhaerescens. In A. lyratum, A. bicolor, and A. himalaicum three cortical bundles or groups of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb03c89bfa021953188215478baf87b4
https://doi.org/10.1086/336809
https://doi.org/10.1086/336809
Autor:
Eric E. Karrfalt
Publikováno v:
Botanical Gazette. 145:372-377
The root-producing meristem of Isoetes andicola (E. Amstutz) L. D. Gomez originates between the first and second roots shortly after the production of the second root, just as in other species of this genus. Additional roots are produced at the lower
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17b8e442ffed042a9c5318d8014e0717
https://doi.org/10.1086/337469
https://doi.org/10.1086/337469
Autor:
Eric E. Karrfalt
Publikováno v:
American Journal of Botany. 68:244-253
All of the roots of Selaginella selaginoides are attached laterally to the base of the shoot, which has monopolar growth as is characteristic of Selaginella. The first three roots are produced by meristematic activity in the cortex of the hypocotyl a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7d3d629b3b8ccd9e176e4f01ba237ba
https://doi.org/10.1002/j.1537-2197.1981.tb12384.x
https://doi.org/10.1002/j.1537-2197.1981.tb12384.x
Autor:
Eric E. Karrfalt
Publikováno v:
Canadian Journal of Botany. 58:2318-2322
Four additional structural similarities between the roots of Isoetes and Stigmaria are reported. Proximal swellings and connectives are reported for the first time in Isoetes roots. The size ranges of the roots of Isoetes and Stigmaria are shown to o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07d171d02324afa79376012ea80d56cb
https://doi.org/10.1139/b80-268
https://doi.org/10.1139/b80-268
Autor:
Doandl A. Eggert, Eric E. Karrfalt
Publikováno v:
Botanical Gazette. 139:271-283
Root initiation was studied in two-, three-, and four-lobed specimens of I soetes tuckermanii and I. nuttallii. The growth of root primordia in the cortex of the corm was synchronous until they emerged from the cortex; therefore, the lengths of the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f5d5aa0337aa3ff5313435dd8aedd33
https://doi.org/10.1086/337001
https://doi.org/10.1086/337001
Autor:
Donald A. Eggert, Eric E. Karrfalt
Publikováno v:
Botanical Gazette. 138:236-247
This study deals with three aspects of the development of Isoetes tuckermanii. Emphasis is placed on changes that occur in the development of individual plants. These include structural changes associated with aging, the development and maintenance o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66ccbc8f3b2cfc6f41af05e76c09a452
https://doi.org/10.1086/336919
https://doi.org/10.1086/336919