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paniculata, Deinandra pentactis Greene Fl. Francisc. 4: 424. 1897. Bruce G. Baldwin, John L. Strother Etymology: No etymology stated in protologue meaning uncertain

(B. G. Baldwin 1996). As treated here, Madia comprises all members of Keck’s informal “section Madia” except M. minima (= Hemizonella) (Baldwin 1999b)

de Candolle and A. L. P. P. de Candolle, Prodr. 5: 692. 1836. Bruce G. Baldwin, John L. Strother Etymology: Greek hemi -, half, and zona, belt or girdle

of geographic diversification (speciation) in plants (J. Clausen 1951; B. G. Baldwin, unpubl.). All members of Layia except L. carnosa and L. hieracioides

in War Department [U.S.], Pacif. Railr. Rep. 4(5): 108. 1857. Bruce G. Baldwin, Susan J. Bainbridge, John L. Strother Endemic Treatment appears in FNA

authors often have placed it in the monogeneric Penthoraceae. Baldwin, J. T. and B. M. Speese. 1951. Penthorum: Its chromosomes. Rhodora 53: 89–91. Haskins,

speciesLayia pentachaeta subspeciesLayia pentachaeta subsp. pentachaeta Bruce G. Baldwin, Susan J. Bainbridge, John L. Strother Endemic Treatment appears in FNA

heterotricha (de Candolle) Hooker & Arnott Bot. Beechey Voy., 358. 1839. Bruce G. Baldwin, Susan J. Bainbridge, John L. Strother EndemicConservation concern Basionym:

fremontii (B. G. Baldwin, unpubl.); the two species are reportedly highly interfertile (natural hybrids have not been reported; J. Clausen 1951). None. None

leucopappa and L. munzii (B. G. Baldwin, unpubl.); the three species are interfertile (they do not co-occur; J. Clausen 1951). None. None. window.propert

genusLayia speciesLayia munzii D. D. Keck Madroño 3: 16. 1935. Bruce G. Baldwin, Susan J. Bainbridge, John L. Strother EndemicConservation concern Treatment

genusLayia speciesLayia discoidea D. D. Keck Aliso 4: 106. 1958. Bruce G. Baldwin, Susan J. Bainbridge, John L. Strother EndemicConservation concern Treatment

genus Hydrilla (Hydrocharitaceae). Aquatic Bot. 13: 485--504. Lakshmanan, C. 1951. A note on the occurrence of turions in Hydrilla verticillata Presl. J. Bombay

speciesHolocarpha heermannii (Greene) D. D. Keck Aliso 4: 112. 1958. Bruce G. Baldwin, John L. Strother Endemic Basionym: Hemizonia heermannii Greene Bull. Torrey

assigned to forma tomentosa. The chromosome count of 2n = 36 by J. T. Baldwin (1951) was for forma albiflora. None. None. window.propertiesFromHigherTax

speciesHolocarpha macradenia (de Candolle) Greene Fl. Francisc. 4: 426. 1897. Bruce G. Baldwin, John L. Strother EndemicConservation concern Basionym: Hemizonia macradenia de

obconica (J. C. Clausen & D. D. Keck) D. D. Keck Aliso 4: 111. 1958. Bruce G. Baldwin, John L. Strother Endemic Basionym: Hemizonia obconica J. C. Clausen & D

speciesMadia gracilis (Smith) D. D. Keck Madroño 5: 169. 1940. Bruce G. Baldwin, John L. Strother Common names: Gumweed Basionym: Sclerocarpus gracilis Smith

his dream of writing a flora of North America. He also introduced William Baldwin (1779--1819), William Darlington (1782--1863), and Yale's Eli Ives (1779--1861)