100
DAVID D. KECK
Copeland, Η. F. 1947. Observations on the structure and classification of the
Pyroleae. Madroño 9: 65-102.
Copeland, H. F. 1953, Observations on the Cyrillaceae particularly on the reproductive structures of the North American species. Phytomorphology 3: 405-411.
Copeland, H. F. 1954a. Observations on certain Epacridaceae. Am. J. Botany
41: 215-222.
Copeland, H. F. 1954b. Some details of the structure of Rhodothamnus chamaecistus. J. Arnold Arboretum (Harvard Univ.) 35 : 82-84.
Copeland, H. F., and Doyel, B. E. 1940. Some features of the structure of Toxicodendron diversiloba. Am. J. Botany 27: 932-939.
Covas, G. 1949. Taxonomic observations on the North American species of
Hordeum. Madroño 10: 1-21.
Cronquist, A. 1951. Orthogenesis in evolution. Research Studies State Coll.
Wash. 19: 3-18.
Dahl, A. O. 1952. The comparative morphology of the Icacinaceae, VI. The
pollen. J. Arnold Arboretum (Harvard Univ.) 33:252-286.
Dahl, A. O. 1955. The pollen morphology of several genera excluded from the
family Icacinaceae. J. Arnold Arboretum (Harvard Univ.) 36: 159-163.
Danser, B. H. 1929. Ueber die Begriffe Komparium, Kommiskuum, und Konvivium und ueber die Entstehungsweise der Konvivien. Genética 11: 399-450.
Dansereau, P. 1941. Études sur les hybrides de cistes. VI. Introgression dans la
section Ladanium. Can. J. Research 19: 59-67.
Dansereau, P., and Desmarais, Y. 1947. Introgression in sugar maples—II. Am.
Midland Naturalist 37: 146-161.
Dansereau, P., and Lafond, A. 1941. Introgression des caracteres de Y Acer
saccharophorum Κ. Koch et de Y Acer nigrum Michx. Contrib. inst, botan, univ.
Montreal No. 37: 15-31.
Darlington, C. D., and La Cour, L. F. 1950. Hybridity selection in Campanula.
Heredity 4: 217-248.
Dawson, Μ. L. 1936. The floral morphology of the Polemoniaceae. Am. J. Botany
23 : 501-511.
Dobzhansky, T. 1937. Genetic nature of species differences. Am. Naturalist
71: 404-420.
Dobzhansky, T. 1942. Races and methods of their study. Trans. Ν.Ύ. Acad. Set.
[2], 4: 115-123.
Dobzhansky, T. 1946. Complete reproductive isolation between two morphologically similar species of Drosophila. Ecology 27 : 205-211.
Dobzhansky, T. 1948. Genetic structure of natural populations. Carnegie Inst.
Wash. Yearbook 47: 193-203.
Duncan, R. E. 1954. Number and morphology of chromosomes in relation to systematics of Paphiopedilum. 8th Congr. intern. Botany Rapp. Communs. Sect.
9: 67-69.
Eames, A. J. 1951. Again: 'The new morphology/ New Phytologist 50: 17-35.
Ehrendorfer, F. 1953a. Systematische und zytogenetische Untersuchungen an
europäischen Rassen des Achillea millefolium-Komplexes. österr. Bot. Z. 100:
583-592.
Ehrendorfer, F. 1953b. Ökologisch-geographische Mikro-Differenzierung einer
Population von Galium pumilum Murr. s. str. Österr. Bot. Z. 100: 616-638.
Ehrendorfer, F. 1955. Hybridogene Merkmals-Introgression zwischen Galium
rubrum L. s. str. und G. pumilum Murr. s. str. Österr. Bot. Z. 102: 195-234.
DAVID D. KECK
Copeland, Η. F. 1947. Observations on the structure and classification of the
Pyroleae. Madroño 9: 65-102.
Copeland, H. F. 1953, Observations on the Cyrillaceae particularly on the reproductive structures of the North American species. Phytomorphology 3: 405-411.
Copeland, H. F. 1954a. Observations on certain Epacridaceae. Am. J. Botany
41: 215-222.
Copeland, H. F. 1954b. Some details of the structure of Rhodothamnus chamaecistus. J. Arnold Arboretum (Harvard Univ.) 35 : 82-84.
Copeland, H. F., and Doyel, B. E. 1940. Some features of the structure of Toxicodendron diversiloba. Am. J. Botany 27: 932-939.
Covas, G. 1949. Taxonomic observations on the North American species of
Hordeum. Madroño 10: 1-21.
Cronquist, A. 1951. Orthogenesis in evolution. Research Studies State Coll.
Wash. 19: 3-18.
Dahl, A. O. 1952. The comparative morphology of the Icacinaceae, VI. The
pollen. J. Arnold Arboretum (Harvard Univ.) 33:252-286.
Dahl, A. O. 1955. The pollen morphology of several genera excluded from the
family Icacinaceae. J. Arnold Arboretum (Harvard Univ.) 36: 159-163.
Danser, B. H. 1929. Ueber die Begriffe Komparium, Kommiskuum, und Konvivium und ueber die Entstehungsweise der Konvivien. Genética 11: 399-450.
Dansereau, P. 1941. Études sur les hybrides de cistes. VI. Introgression dans la
section Ladanium. Can. J. Research 19: 59-67.
Dansereau, P., and Desmarais, Y. 1947. Introgression in sugar maples—II. Am.
Midland Naturalist 37: 146-161.
Dansereau, P., and Lafond, A. 1941. Introgression des caracteres de Y Acer
saccharophorum Κ. Koch et de Y Acer nigrum Michx. Contrib. inst, botan, univ.
Montreal No. 37: 15-31.
Darlington, C. D., and La Cour, L. F. 1950. Hybridity selection in Campanula.
Heredity 4: 217-248.
Dawson, Μ. L. 1936. The floral morphology of the Polemoniaceae. Am. J. Botany
23 : 501-511.
Dobzhansky, T. 1937. Genetic nature of species differences. Am. Naturalist
71: 404-420.
Dobzhansky, T. 1942. Races and methods of their study. Trans. Ν.Ύ. Acad. Set.
[2], 4: 115-123.
Dobzhansky, T. 1946. Complete reproductive isolation between two morphologically similar species of Drosophila. Ecology 27 : 205-211.
Dobzhansky, T. 1948. Genetic structure of natural populations. Carnegie Inst.
Wash. Yearbook 47: 193-203.
Duncan, R. E. 1954. Number and morphology of chromosomes in relation to systematics of Paphiopedilum. 8th Congr. intern. Botany Rapp. Communs. Sect.
9: 67-69.
Eames, A. J. 1951. Again: 'The new morphology/ New Phytologist 50: 17-35.
Ehrendorfer, F. 1953a. Systematische und zytogenetische Untersuchungen an
europäischen Rassen des Achillea millefolium-Komplexes. österr. Bot. Z. 100:
583-592.
Ehrendorfer, F. 1953b. Ökologisch-geographische Mikro-Differenzierung einer
Population von Galium pumilum Murr. s. str. Österr. Bot. Z. 100: 616-638.
Ehrendorfer, F. 1955. Hybridogene Merkmals-Introgression zwischen Galium
rubrum L. s. str. und G. pumilum Murr. s. str. Österr. Bot. Z. 102: 195-234.