Abstract 6116 from Intl. Bot. Congress 1999

ibclogo XVI International Botanical Congess

Abstract Number: 6116
Session = 4.5.5

PHYLOGENETIC RELATIONSHIPS WITHIN THE HAPLOLEPIDEOUS MOSSES

C. La Farge+, B. Mishler, J. Wheeler, D. Wall, K. Johannes, S. Schaffer, and J. Shaw ++ (+Dept. of Biol. Sci., Univ. of Alberta, Edmonton, Canada, Dept. of Integrative Biol., Univ. of California, Berkeley, CA, ++Dept. of Botany, Duke Univ., Durham, NC)

The Haplolepidae, with a unique peristome, forms a major lineage within the arthrodontous mosses. Relationships of the four orders within the Haplolepidae are explored using 3 cpDNA regions - rbcL, rps4, trnL(UAA) - trnF(GAA) and morphology. Parsimony analyses of independent and combined data sets reveal new, robust relationships: an expanded, monophyletic Calymperaceae nested within the Dicranales, not the Pottiales, the Leucobryaceae s.s. and Dicnemonaceae nested within the Dicranaceae, a polyphyletic Paraleucobryaceae, and the Fissidentaceae within the Dicranales. The specialized costa with medial chlorocysts and surrounding leucocysts has evolved multiple times within the Dicranales.

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PHYLOGENETIC RELATIONSHIPS WITHIN THE HAPLOLEPIDEOUS MOSSES

C. La Farge+, B. Mishler*, J. Wheeler*, D. Wall*, K. Johannes*, S. Schaffer*, and J. Shaw ++ (+Dept. of Biol. Sci., Univ. of Alberta, Edmonton, Canada, *Dept. of Integrative Biol., Univ. of California, Berkeley, CA, ++Dept. of Botany, Duke Univ., Durham, NC)

C. La Farge+, B. Mishler, J. Wheeler, D. Wall, K. Johannes, S. Schaffer, and J. Shaw ++ (+Dept. of Biol. Sci., Univ. of Alberta, Edmonton, Canada, Dept. of Integrative Biol., Univ. of California, Berkeley, CA, ++Dept. of Botany, Duke Univ., Durham, NC)