102
DAVID D. KECK
Grant, W. F. 1955. A cytogenetic study in the Acanthaceae. Brittonia 8: 121-149.
Gregor, J. W. 1939. Experimental taxonomy. IV. Population differentiation in
North American and European sea plantains allied to Plantago marítima L.
New Phytologist 38 : 293-322.
Gregor, J. W. 1946. Ecotypic variation. New Phytologist 45: 254-270.
Gregor, J. W., and Sansome, F. W. 1930. Experiments on the genetics of wild
populations. II: Phleum pratense L. and the hybrid P. pratense L. X P.
alpinum L. /. Genet. 22 : 373-387.
Gregory, W. C. 1941. Phylogenetic and cytological studies in the Ranunculaceae
Juss. Trans. Am. Phil. Soc. [II], 31: 443-520.
Gustafsson, Á. 1942. The origin and properties of the European blackberry flora.
Her editas 28: 249-277.
Gustafsson, Á. 1943. The genesis of the European blackberry flora. Lunds Univ.
Ärsskr. Ν.F. Avd. 2, 39(6): 1-199.
Gustafsson, Ä. 1946. Apomixis in higher plants. Part I. The mechanism of
apomixis. Lunds Univ. Ärsskr. 42(3): 1-67.
Gustafsson, Á. 1947a. Apomixis in higher plants. Part II. The causal aspect of
apomixis. Lunds Univ. Ärsskr. 43(2): 69-179.
Gustafsson, Á. 1947b. Apomixis in higher plants. Part III. Biotype and species
formation. Lunds Univ. Ärsskr. 43(12): 183-370.
Hall, Μ. T. 1952. Variation and hybridization in Juniperus. Ann. Missouri
Botan. Garden 39: 1-64.
Hedberg, O. 1946. Pollen morphology in the genus Polygonum L. s. lat. and its
taxonomical significance. Svensk Botan. Tidskr. 40 : 371-404.
Heimsch, C. 1940. Wood anatomy and pollen morphology of Rhus and allied
genera. /. Arnold Arboretum (Harvard Univ.) 21:279-291.
Heimsch, C., Jr. 1942. Comparative anatomy of the secondary xylem in the
"Gruñíales" and "Terebinthales" of Wettstein with reference to taxonomic
grouping. Lilloa 8: 83-198.
Heimsch, C, Jr., and Wetmore, R. H. 1939. The significance of wood anatomy in
the taxonomy of the Juglandaceae. Am. J. Botany 26: 651-660.
Heiser, C. B., Jr. 1949a. Natural hybridization with particular reference to introgression. Botan. Rev. 15: 645-687.
Heiser, C. B., Jr. 1949b. Study in the evolution of the sunflower species Helianthus annuus and H. Bolanden. Univ. Calif. (Berkeley) Pubis. Botany 23:
157-208.
Heslop-Harrison, J. 1953. "New Concepts in Flowering-Plant Taxonomy," 135 pp.
William Heinemann, London.
Heslop-Harrison, J. 1954. Genecology and orthodox taxonomy: Some theoretical
aspects. Science Progr. 167: 484-494.
Hubbard, C. E. 1948. (Family) Gramineae. in "British Flowering Plants" (J.
Hutchinson, ed.), pp. 284-348. P. R. Gawthorn, London.
Huskins, C. L. 1931. The origin of Spartina Townsendii. Genética 12: 531-538.
Huxley, J. 1938. Clines: an auxiliary taxonomic principle. Nature 142: 219-220.
Johnson, B. L. 1945. Cytotaxonomic studies in Oryzopsis. Botan. Gaz. 107: 1-32.
Johnson, M. A. 1953. Relationship in the Magnoliaceae as determined by the
precipitin reaction. Bull. Torrey Botan. Club 80: 349-350.
Jones, K. 1954. A consideration of certain aspects of cytotaxonomic investigation
in the light of results obtained in Holcus. 8th Congr. intern. Botany Rapp.
Communs. Sect. 9: 75-77.
DAVID D. KECK
Grant, W. F. 1955. A cytogenetic study in the Acanthaceae. Brittonia 8: 121-149.
Gregor, J. W. 1939. Experimental taxonomy. IV. Population differentiation in
North American and European sea plantains allied to Plantago marítima L.
New Phytologist 38 : 293-322.
Gregor, J. W. 1946. Ecotypic variation. New Phytologist 45: 254-270.
Gregor, J. W., and Sansome, F. W. 1930. Experiments on the genetics of wild
populations. II: Phleum pratense L. and the hybrid P. pratense L. X P.
alpinum L. /. Genet. 22 : 373-387.
Gregory, W. C. 1941. Phylogenetic and cytological studies in the Ranunculaceae
Juss. Trans. Am. Phil. Soc. [II], 31: 443-520.
Gustafsson, Á. 1942. The origin and properties of the European blackberry flora.
Her editas 28: 249-277.
Gustafsson, Á. 1943. The genesis of the European blackberry flora. Lunds Univ.
Ärsskr. Ν.F. Avd. 2, 39(6): 1-199.
Gustafsson, Ä. 1946. Apomixis in higher plants. Part I. The mechanism of
apomixis. Lunds Univ. Ärsskr. 42(3): 1-67.
Gustafsson, Á. 1947a. Apomixis in higher plants. Part II. The causal aspect of
apomixis. Lunds Univ. Ärsskr. 43(2): 69-179.
Gustafsson, Á. 1947b. Apomixis in higher plants. Part III. Biotype and species
formation. Lunds Univ. Ärsskr. 43(12): 183-370.
Hall, Μ. T. 1952. Variation and hybridization in Juniperus. Ann. Missouri
Botan. Garden 39: 1-64.
Hedberg, O. 1946. Pollen morphology in the genus Polygonum L. s. lat. and its
taxonomical significance. Svensk Botan. Tidskr. 40 : 371-404.
Heimsch, C. 1940. Wood anatomy and pollen morphology of Rhus and allied
genera. /. Arnold Arboretum (Harvard Univ.) 21:279-291.
Heimsch, C., Jr. 1942. Comparative anatomy of the secondary xylem in the
"Gruñíales" and "Terebinthales" of Wettstein with reference to taxonomic
grouping. Lilloa 8: 83-198.
Heimsch, C, Jr., and Wetmore, R. H. 1939. The significance of wood anatomy in
the taxonomy of the Juglandaceae. Am. J. Botany 26: 651-660.
Heiser, C. B., Jr. 1949a. Natural hybridization with particular reference to introgression. Botan. Rev. 15: 645-687.
Heiser, C. B., Jr. 1949b. Study in the evolution of the sunflower species Helianthus annuus and H. Bolanden. Univ. Calif. (Berkeley) Pubis. Botany 23:
157-208.
Heslop-Harrison, J. 1953. "New Concepts in Flowering-Plant Taxonomy," 135 pp.
William Heinemann, London.
Heslop-Harrison, J. 1954. Genecology and orthodox taxonomy: Some theoretical
aspects. Science Progr. 167: 484-494.
Hubbard, C. E. 1948. (Family) Gramineae. in "British Flowering Plants" (J.
Hutchinson, ed.), pp. 284-348. P. R. Gawthorn, London.
Huskins, C. L. 1931. The origin of Spartina Townsendii. Genética 12: 531-538.
Huxley, J. 1938. Clines: an auxiliary taxonomic principle. Nature 142: 219-220.
Johnson, B. L. 1945. Cytotaxonomic studies in Oryzopsis. Botan. Gaz. 107: 1-32.
Johnson, M. A. 1953. Relationship in the Magnoliaceae as determined by the
precipitin reaction. Bull. Torrey Botan. Club 80: 349-350.
Jones, K. 1954. A consideration of certain aspects of cytotaxonomic investigation
in the light of results obtained in Holcus. 8th Congr. intern. Botany Rapp.
Communs. Sect. 9: 75-77.