6 NEW COMBINATIONS DUDLEYA (CRASSULACEAE) IN AND (GROSSULARIACEAE) RIBES Nancy Morin R. of North America Flora P.O.Box 71 Point Arena, California 95468, U.S.A. The following new combinations are required for the treatment of Dudleya by Reid. Moran (in prep.) for Flora North America. The provision of nomenclature here simply implements Dr. Moran's taxonomy and of Moran the combination should be credited to him, with citation as "in" Morin. Dudleya abramsii Rose subsp. costifolia [originally costajolia] (Bartel Shevock) Moran, comb. nov. Ba- cSr & & & sionym: Dudleya cymosa (Lem.) Britton Rose subsp. Bartel Shevock, Aliso 12:701. 1990. Dudleya (Bartel costifolia costifolia shevock) Thomson. P.H. — Common name. Pierpoint Springs liveforever. known Dudleya ahramsii subsp. only from one southwest-facing outcrop of pre-Cretaceous costifolia is limestone just west of Pierpoint Springs, Tulare County, California, in the southern Sierra Nevada, in an area cm that has been subdivided. forms clumps to 10 wide. The bright yellow corolla and more-branching It cyme and sometimes longer pedicels subsp. apart from the other subspecies oi Dudleya ahramsii set costifolia and show an approach toward D. cymosa, where the original authors placed However, the cespitose small it. much rosettes of narrow leaves have more the aspect of D. ahramsii, especially recalling the lowland subsp. mark hettinae; the higher insertion of the antesepalous stamens is a of D. ahramsii, (and the related D. parva) in contrast to D. cymosa and other species. The branching cyme is somewhat approached in subsp. calcicola, which grows just to the north. Dudleya abramsii Rose subsp. setchellii Qeps.) Moran, comb. nov. Watson Basionym: Cotyledon laxa (Lmdl.) S. var. W 267. 1901. Dudleya cymosa (Lem.) Britton Rose subsp. Qeps-) Moran. Dudleya Qeps.) setchellii Jeps., Fl. Calif. iSr setchellii setchellii & Britton Rose. — Common name. Santa Clara Valley dudleya. known Dudleya ahramsii subsp. from only a score of places in the Coyote Valley area, Santa setchellii is Clara County, where considered threatened. Although was formerly placed with Dudleya cymosa, is it it it and which grows on and clearly is closer to D. ahramsii especially to subsp. murina, likewise serpentine at km about the same elevation but some 200 the south. Subspecies tends be smaller, with petals to setchellii to unmarked and sharply less acute. Infraspecific taxa in Rihes oxyacanthoides L. will be recognized as varieties in the forthcoming treatment of Rihes in Flora of North America (N. Morin, in prep.). The following combination is required. cognatum Ribes oxyacanthoides (Greene) Morin, comb, L. var. et stat. nov. Basionym: mhes cognatum Greene, Pittonia & 3:115. 1896. Grossularia cognata (Greene) Coville Britton. Rihes oxyacanthoides L. subsp. cognatum (Greene) Sinnott. ACKNOWLEDGMENT Thanks Guy Nesom and Barney Lipscomb prompt and comments helpful to for REEERENCES Moran, R. In prep. Dudleyo. Crassulaceae. In: Flora of North America Editorial Committee, eds. 1993+. Flora of New North America north of Mexico. 14+ York and Oxford. vols. Vol. 8. J. Bot. Res. Inst. Texas 1(2): 1015-1016. 2007 1016 Journal of the Botanical Research Institute of Texas 1(2) MoRiN, N.R. In prep. Grossulariaceae. In: Flora of North America Editorial Committee, eds. 993+. Flora of North 1 New America north of Mexico. 14+ York and Oxford. vols. Vol. 8.