A REVISION OF THE GENUS FOSSOMBRONIA RADDI IN EAST ASIA AND OCEANIA

Accession number;05A0766120
Title;A REVISION OF THE GENUS FOSSOMBRONIA RADDI IN EAST ASIA AND OCEANIA
Author; KRAYESKY DAVID M. (Southern Illinois Univ., Il, Usa) KRAYESKY DAVID M. (Univ. Louisiana At Lafayette, La, Usa) CRANDALL-STOTLER BARBARA (Southern Illinois Univ., Il, Usa) STOTLER RAYMOND E. (Southern Illinois Univ., Il, Usa)
Journal Title;J Hattori Bot Lab
Journal Code:Y0255A
ISSN:0073-0912
VOL.;NO.98;PAGE.1-45(2005)
Figure&Table&Reference;FIG.15, TBL.1, REF.67
Pub. Country;Japan
Language;English
Abstract;Since the 1899 Schiffner publication describing Fossombronia japonica Schiffn., 16 taxa of Fossombronia Raddi have been reported from Eastern Asia and Oceania. Of these, seven were named as new taxa. Although several regional studies have been published, no study of the genus has ever been undertaken for the entire region. We have conducted a comprehensive study of the gametophyte and sporophyte characters of all the taxa previously reported from the region to determine the diversity of the genus in the study area. Our study of type specimens has been complemented with examinations of extensive collections of Fossombronia from numerous herbaria. This survey has shown that several gametophyte characters, such as oil body morphology, thallus lobe size, shape and insertion, caulocalyx morphology and gametangial arrangement are systematically important characters. Examining more than 70 characters combined from both generations, we conclude that there are only seven species of Fossombronia represented in the study area. These are F. alaskana Steere & Inoue, F. caledonica Steph., F. himalayensis Kashyap, F. japonica, F. macrocalyx Steph., F. mylioides Inoue, and F. pusilla (L.) Nees. It is also concluded that F. cristula Austin, postulated by previous investigators to be synonymous with F. japonica, is a distinct taxon that is endemic to the eastern United States. (author abst.)
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