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New or Interesting American Ferns

1953; American Fern Society; Volume: 43; Issue: 1 Linguagem: Italiano

10.2307/1545148

1938-422X

Edwin Bingham Copeland,

Bryophyte Studies and Records

Botrychium Vargasii Copel., sp. no.v. Species B. virginiano affinis; stipite 20 cm. longo; lamina sterili triangulari, 10-13 cm. lata et longa; pinnis infimis 10 cm. longis, 5 cm. latis, acutis, petiolulis 10-15 mm. longis, rhachibus angustissime alatis, pinnulis sessilibus decurrentibus, maximis suprabasalibus 4 cm. longis et 12 mm. latis, pinnatifidis, segmentis 4 mm. latis, obtusis, inconspicue serrulatis, dentibus minutis appressis utroque latere segmenti I vel II; lamina herbacea, glabra, laete viridi; stipite segmenti fertilis e basi sterilis oriente, 13 cm. longo; segmento fertili frondis 6 cm. longo, stricto, tripinnato; sporangiis vix 1 mm. diam.