Gerald Alfred Mulligan

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Gerald Alfred Mulligan (born Ottawa, Ontario, Canada, February 13, 1928), Canadian botanist.

Research Branch, Agriculture Canada (retired 1987, now emeritus Research Associate). Assistant Director, Biosytematics Research Institute 1973 to 1978. Director, Biosystematics Research Institute/Centre- 1978 to 1987.

IPNI standard form: G.A.Mulligan

Taxon names authored

(List may be incomplete)

plus:

Eponyms[edit]

Publications[edit]

(List may be incomplete)

1950s[edit]

  • Mulligan, G.A. 1952. Survey of common barberry (Berberis vulgaris L.) and European buckthorn (Rhamnus cathartica L.) in eastern Ontario. Canada Department of Agriculture Bull. 23 pp.
  • Mulligan, G.A. 1952. Barberry and buckthorn surveys in southern Ontario. Proc. sixth meeting National Weed Committee, pp. 130-131.
  • Mulligan, G.A. 1953. An example of hybridization in weeds. Proc. sixth meeting National Weed Committee, pp. 64-65.
  • Mulligan, G.A. 1954. The glabrous nodding thistle, Carduus nutans var. leiophyllus in Saskatchewan. Res. Rept National Weed Committee, Western Section, p. 108.
  • Mulligan, G.A., and C. Frankton 1954. The plumeless thistles Carduus ssp. in Canada. Canadian Field-Nat. 68: 31-36.
  • Lindsay, D.R., and G.A. Mulligan 1955. Weed Survey in British Columbia. Res. Rept. National Weed Committee, Western Section, p. 125.
  • Moore, R.J., and G.A. Mulligan 1956. Natural hybridization between Carduus nutans and Carduus acanthoides in Ontario. Canadian J. Botany 34: 71-85. DOI: 10.1139/b56-009
  • Mulligan, G.A. 1957. Chromosome numbers in Canadian weeds I. Canadian J. Botany 35: 779-789. DOI: 10.1139/b57-064
  • Mulligan, G. 1958. Chromosome numbers in the Chrysanthemum leucanthemum complex. Rhodora 60ː 122-125.
  • Moore, R.J., and G.A. Mulligan 1958. Study of natural hybridization between Carduus acanthoides and Carduus nutans. Proceedings International Congress of Genetics 2ː 193.
  • Mulligan, G.A. 1959. Chromosome numbers in Canadian weeds II. Canadian J. Botany 37ː 81-92. DOI: 10.1139/b59-008
  • Mulligan, G.A., and I.J. Bassett 1959. Achillea millefolium complex in Canada and portions of the United States. Canadian J. Botany 37ː 73-80. DOI: 10.1139/b59-007

1960s[edit]

  • Mulligan, G.A.1960.Polyploidy in Canadian weeds. Canadian J. Genetics and Cytology 2ː 150-161.
  • Mulligan, G.A. 1961. Chromosome numbers of Canadian weeds III. Canadian J. Botany 39ː 1057-1066. DOI: 10.1139/b61-092
  • Mulligan, G.A. 1961. The genus Lepidium in Canada. Madroño 16ː 77-90.
  • Mulligan, G.A., and R.J. Moore 1961. Natural selection among hybrids between Carduus acanthoides and Carduus nutans in Ontario. Canadian J. Botany 39ː 269-279. DOI: 10.1139/b61-022
  • Mulligan G.A., and C. Frankton 1962. Taxonomy of the genus Cardaria with particular reference to the species introduced into North America. Canadian J. Botany 40ː 1411-1425.
  • Bassett, I.J., G.A. Mulligan, and C. Frankton 1962. Poverty weed, Iva axillaris in Canada and the United States. Canadian J. Botany 40ː 1243-1249.
  • Mulligan, G.A. 1964. Chromosome numbers of the family Cruciferae I. Canadian J. Botany 42ː 1509-1519.
  • Moore, R.J., and G.A. Mulligan 1964. Further studies on natural selection among hybrids of Carduus acanthoides and Carduus nutans. Canadian J. Botany 42ː 1605-1613.
  • Mulligan, G.A., and J.A. Calder 1964. The genus Subularia (Cruciferae). Rhodora 66ː 127-135.
  • Mulligan, G.A. 1965. Chromosome numbers of the family Cruciferae II. Canadian J. Botany 43ː 657-668.
  • Mulligan, G.A. 1965. In IOPB chromosome number reports V. Taxon 14ː 191-196.
  • Mulligan, G.A. 1965. Recent colonization by herbaceous plants, pp. 127-146 in Baker, H.G., and G.I Stebbins The Genetics of Colonizing Species. Academic Press Inc., New York, 588 pp.
  • Mulligan, G.A. 1965. Chromosome numbers of the family Cruciferae III. Canadian J. Botany 44ː 309-319.
  • Mulligan, G. A. 1966. Two new species of Physaria (Cruciferae) in Colorado. Canadian J. Botany 44(12): 1661–1665. DOI: 10.1139/b66-178 Reference page
  • Mulligan, G.A. 1966. In IOPB chromosome number reports VI. Taxon 15, page 118.
  • Mulligan, G.A., and A.E. Porsild 1966. Rorippa calycina in the Northwest Territories. Canadian J. Botany 44ː 1105-1106.
  • Mulligan G.A. 1967. Diploid and autotetraploid Physaria vitulifera (Cruciferae). Canadian J. Botany 45ː 183-188.
  • Mulligan, G.A. 1967. Cytotaxonomy of Physaria acutifolia, P. chambersii, and P. newberryi (Cruciferae). Canadian J. Botany 45ː 1887-1898. DOI: 10.1139/b67-204
  • Mulligan, G.A. 1967. Documented chromosome numbers of plants. Madroño 19; 134-136.
  • Mulligan, G.A. 1967. Lawn weeds. News from Canada Department of Agriculture No. 1218ː 3–4.
  • Mulligan, G.A. 1967. Poison Ivy. News from Canada Department of Agriculture No. 1222ː 8-10.
  • Mulligan, G.A. 1967. In IOPB chromosome number reports XI. Taxon 16, page 222.
  • Mulligan, G.A. 1967. In IOPB chromosome number reports XVI. Taxon 16ː pp. 564–568.
  • Mulligan, G.A., and C. Frankton 1967. Present status of tall wormseed mustard, Erysimum hieraciifolium in Canada. Canadian J. Botany 45ː 755-756.
  • Porsild, A.E., C.R. Harrington. and G.A. Mulligan 1967. Lupinus arcticus grown from seed of Pleistocene age. Science 158ː 113-114.
  • Mulligan, G.A. 1968. Transfers from Physaria to Lesquerella (Cruciferae). Canadian J. Botany 46(5)ː 527–530. DOI: 10.1139/b68-079 Reference page
  • Mulligan, G.A. 1968. Physaria didymocarpa, P. brassicoides, and P. floribunda (Cruciferae) and their close relatives. Canadian J. Botany 46: 735-740.
  • Mulligan, G.A. 1968. Diploid and tetraploid chromosome races of Chrysanthemum leucanthemum s.l. Le Naturaliste Canadien 95: 793-795.
  • Mulligan, G.A., and W.J. Cody 1968. Draba norvegica disjunct to the Mackenzie District, Northwest Territories, Canada. Canadian J. Botany 46: 1334-1335.
  • Mulligan, G.A., and W.J. Cody 1968. In IOPB chromosome number reports XVII. Taxon 17, page 286.
  • Mulligan, G.A., and A.E. Porsild 1968. A natural first generation hybrid between Rorippa barbareaefolia and Rorippa islandica. Canadian J. Botany 46: 1079-1081.
  • Calder, J.A., R.L. Taylor, and G.A. Mulligan 1968. Flora of the Queen Charlotte Islands. News from Canada Department Agriculture No. 1266: 6-7.
  • Taylor, R.L., and G.A. Mulligan 1968. Flora of the Queen Charlotte Islands, part 2: cytological aspects of the vascular flora, Canada Department Agriculture Research Monog. No. 4, part 2. Queen's Printer, Ottawa. 148 pp.
  • Mulligan, G.A. 1969. In IOPB chromosome number reports XX. Taxon 18, page 220.
  • Mulligan, G.A., and W.J. Cody 1969. The highest chromosome number known to occur in a North American plant. Canadian Field-Nat. 83: 277-278.
  • Mulligan, G.A. & Porsild, A.E. 1969. A new species of Lesquerella (Cruciferae) in northwestern Canada. Canadian J. Botany 47: 215–216. DOI: 10.1139/b69-025 Reference page
  • Mulligan, G.A., and A.E. Porsild 1969. Chromosome numbers of some plants from the unglaciated central Yukon Plateau, Canada. Canadian J. Botany 47: 655-662.

1970s[edit]

  • Mulligan, G.A. 1970. Cytotaxonomic studies of Draba glabella and its close relatives in Canada and Alaska. Canadian J. Botany 48(8): 1431–1437. DOI: 10.1139/b70-215 Reference page
  • Mulligan, G.A. 1970. A new species of Draba in the Kananaskis Range of southwestern Alberta. Canadian J. Botany 48(10): 1897–1898. DOI: 10.1139/b70-277 Reference page
  • Mulligan, G.A. 1970. Wild garlic, Allium vineale, a new weed in Canada. Greenhouse Garden and Grass 9(2):12.
  • Frankton, C., and G.A. Mulligan 1970. Weeds of Canada. Canada Department of Agriculture Publ. 948. 217 pp.
  • Mulligan, G.A., and J.N. Findlay 1970. Sexual reproduction and agamospermy in the genus Draba. Canadian J. Botany 48: 269-270. DOI: 10.1139/b70-040
  • Mulligan, G.A., and J.N. Findlay 1970. Reproductive systems and colonization in Canadian weeds. Canadian J. Botany 48: 859-860. DOI: 10.1139/b70-119
  • Mulligan, G.A., and A.E. Porsild 1970. In IOPB chromosome number reports XXV. Taxon 19: pp. 111-112.
  • Mulligan, G.A., and A.E. Porsild 1970. In IOPB chromosome number reports XXVIII. Taxon 19: p. 609.
  • Mulligan, G.A. 1971. Cytotaxonomic studies of the closely related Draba cana, D. cinerea, and D. groenlandica in Canada and Alaska. Canadian J. Botany 49: 89-93. DOI: 10.1139/b71-017
  • Mulligan, G.A. 1971. Cytotaxonomic studies of Draba species of Canada and Alaska: D. ventosa, D. ruaxes, and D. paysonii. Canadian J. Botany 49: 1455-1460. DOI: 10.1139/b71-204
  • Mulligan, G.A., and Cody, W.J. 1971. In IOPB chromosome number reports XXXIII. Taxon 20: pp. 613-614.
  • Mulligan, G.A. 1972. Cytotaxonomic studies of Draba species in Canada and Alaska: D. oligosperma and D. incerta. Canadian Journal of Botany 50(8): 1763–1766. DOI: 10.1139/b72-218 Reference page
  • Mulligan, G.A. 1972. Autogamy, allogamy, and pollination in some Canadian weeds. Canadian J. Botany 50: 1767-1771. DOI: 10.1139/b72-219
  • Cavers, P.B., and Mulligan, G.A. 1972. A new series: The biology of Canadian weeds. Canadian J. Plant Science 52: 651-654. DOI: 10.4141/cjps72-099
  • Mulligan, G.A., and Cody, W.J. 1972. In IOPB chromosome number reports XXXV. Taxon 21: p. 163.
  • Mulligan, G.A., L. Cinq-Mars, and W.J. Cody 1972. Natural interspecific hybridization between a sexual and an apogamous species of the beech fern genus Phegopteris Fee. Canadian J. Botany 50: 1295-1300. DOI: 10.1139/b72-158
  • Mulligan, G.A., and Frankton, C. 1972. Chromosome races in Rumex arcticus (Polygonaceae). Canadian J. Botany 50: 378-380. DOI: 10.1139/b72-053
  • Mulligan, G.A., Cody, W.J. and Grainger, N. 1972. In IOPB chromosome number reports XXXVII. Taxon 21: 498-499 pp.
  • Mulligan, G.A., 1973. Pp. 13-18 in The genus Lesquerella (Cruciferae) in North America. R.C.Rollins and E.A. Shaw, Harvard University Press 288 pp.
  • Mulligan, G.A., and Cody, W.J. 1973. A clarification of the chromosome number situation in Sanquisorba canadensis. Canadian J. Botany 51: 2075-2077. DOI: 10.1139/b73-269
  • Mulligan, G.A., and Cody, W.J. 1973. In IOPB chromosome number reports XL. Taxon 22: 290-191 pp.
  • Mulligan. G.A., and Kevan, P.G. 1973. Color, brightness, and other floral characteristics attracting insects to the blossoms of some Canadian weeds. Canadian J. Botany 51: 1939-1952. DOI: 10.1139/b73-248
  • Kevan, P.G., Grainger, N.D., Mulligan, G.A. and Robertson, A.R. 1973. A gray-scale for measuring reflectance and color in the insect and human visual spectra. Ecology 54: 924-926.
  • Mulligan, G.A. 1974. Confusion in the names of three Draba species of the arctic: D. adamsii, D. oblongata, and D. corymbosa. Canadian J. Botany 52: 791-793. DOI: 10.1139/b74-102
  • Mulligan, G.A. 1974. Cytotaxonomic studies of Draba nivalis and its close allies in Canada and Alaska. Canadian J. Botany 52: 1793–1801. DOI: 10.1139/b74-232 Reference page
  • Mulligan, G.A., and Cody, W.J. 1974. In IOPB chromosome number reports XLIII. Taxon 23: p. 194.
  • Mulligan, G.A., and Findlay, J.N. 1974. The biology of Canadian weeds 3. Cardaria draba, C. chalepensis, and C. pubescens. Canadian J. Plant Science 54: 149-160. DOI: 10.4141/cjps74-024
  • Mulligan G., 1975. Draba crassifolia, D. albertina, D. nemorosa, and D. stenoloba in Canada and Alaska. Canadian J. Botany 53: 745-751. DOI: 10.1139/b75-089
  • Mulligan, G.A., and Bailey, L.G. 1975. The biology of Canadian weeds 8. Sinapis arvensis L. Canadian J. Botany 55: 171-183. DOI: 10.4141/cjps75-026
  • Mulligan, G.A. 1976. Common weeds of Canada/Les mauvais herbes communes du Canada. McClelland and Stewart Ltd., Toronto. 140 pp.
  • Mulligan, G.A., and Bailey, L.G. 1976. Seed coats of some Brassica and Sinapis weedy and cultivated in Canada. Economic Botany 30: 143-148.
  • Mulligan, G.A., and Junkins, B.E. 1976. The biology of Canadian weeds 17. Cyperus esculentus L. Canadian J. Plant Science 56: 339-350. DOI: 10.4141/cjps76-052
  • Mulligan, G.A. 1977. Seed coats under the scanning electron microscope. Seed Technology 2: 24-29.
  • Mulligan, G.A., and Junkins, B.E. 1977. The biology of Canadian weeds 23. Rhus radicans L. Canadian J. Plant Science 57: 515-523. DOI: 10.4141/cjps77-075
  • Mulligan, G.A. 1978. Barbarea stricta Andrz., a new introduction to Quebec. Le Naturaliste Canadien 105: 297-298.
  • Mulligan, G.A., and Junkins, B.E. 1978. The taxonomic rank of Rydberg's poison ivy. Le Naturaliste Canadien 105: 291-293.
  • Mulligan, G.A., and Lindsay, D.R. 1978. Euphorbia subgenus Chamaesyce in Canada. Le Naturaliste Canadien 105: 37-40.
  • Mulligan, G.A. 1979. Four new species of Draba in northwestern North America. Canadian J. Botany 57: 1873–1875. DOI: 10.1139/b79-236 Reference page
  • Mulligan, G.A. 1979, (Editor). The biology of Canadian weeds, contributions 1-32. Agriculture Canada Publ. 1693, 380 pp.
  • Mulligan, G.A., and Cody, W.J. 1979. Chromosome numbers in Phegopteris. Canadian J. Botany 57: 1815-1819. DOI: 10.1139/b79-225
  • Miller, J.E, Mulligan, G.A., et al. 1979. Common weed seedlings of the United States and Canada. University Georgia College Agriculture, Athens, 31 pp.

1980s[edit]

  • Mulligan, G.A. 1980. Poison ivy, western poison oak, and poison sumac. Agriculture Canada Publ. 1699. 13pp.

Mulligan, G.A. 1980. The genus Cicuta in North America. Canadian J. Botany 58: 1755-1767.

  • Mulligan, G.A., and Munro, D.B. 1980. The biology of Canadian weeds 48. Cicuta maculata L., C. douglasii (DC.) Coult. & Rose, and C. virosa L. Canadian J. Plant Science 61(1): 93-105. DOI: 10.4141/cjps81-012
  • Alex, J.F., R. Cayouette, and Mulligan, G.A. 1980. Common and botanical names of weeds in Canada. Agriculture Canada Publ. 1765. 415 pp.
  • Mulligan, G.A., and Munro, D.B.. 1981. The biology of Canadian weeds 51. Prunus virginiana L., and P. serotina Ehrh. Canadian J. Plant Science 61(4): 977-992. DOI: 10.4141/cjps81-144
  • Cody, W.J., and Mulligan, G.A. 1982. Chromosome numbers of some Canadian ferns and fern allies. Le Naturaliste Canadien 109: 273-275.
  • Mulligan, G.A., and Munro, D.B. 1983. Vascular plants poisonous to livestock in Canada 1. A preliminary inventory. Agriculture Canada Technical Bulletin 1983-23E. 33pp.
  • Mulligan, G.A., Munro, D.B., and J. McNeil 1983. The status of Stachys palustris (Labiatae) in North America. Canadian J. Botany 61: 679-682. DOI: 10.1139/b83-077
  • Mulligan, G.A. 1984. Chromosome numbers of some plants native and naturalized in Canada. Le Naturaliste Canadien 111: 447-449.
  • Mulligan, G.A. (Editor) 1984. The biology of Canadian weeds, contributions 33-61. Agriculture Canada Publ. 1765. 415 pp.
  • Mulligan, G.A., and Munro, D.B. 1984. Chromosome numbers and sexual compatibility in North American Rorippa sylvestris (Cruciferae). Canadian J. Botany 62: 575-580. DOI: 10.1139/b84-086
  • Mulligan, G.A., and Munro, D.B.. 1984. Wild and cultivated plants poisonous to humans in Canada. Agriculture Canada Technical Bulletin 1984E. 22 pp.
  • Mulligan, G.A. (Editor) 1986. Systematics in Agriculture Canada at Ottawa from 1886-1966. Historical Series No. 28E. 81 pp.

Mulligan, G.A. (Editor) 1986. La Recherche en systématique à Agriculture Canada Ottawa 1886-1966. Série historique No. 28F. 83 pp.

  • Mulligan, G.A. 1987. Common weeds of Canada. NC Press Ltd. Toronto. 143 pp.
  • Mulligan, G.A. 1987. Les plantes nuisibles communes du Canada. Marcel Broquet Inc., Montréal. 142 pp.
  • Mulligan, G.A., and Munro, D.B. 1987. The biology of Canadian weeds 77. Veratrum viride Ait. Canadian J. Plant Science 67(3): 777-786. DOI: 10.4141/cjps87-105
  • Frankton, C., and Mulligan, G.A. 1987. Weeds of Canada (revised edition). NC Press, Toronto. 217 pp.
  • Frankton, C., and Mulligan, G.A. 1988. Les plantes nuisibles du Canada (revisée). Marcel Broquet Inc., Montréal. 218 pp.
  • Mulligan, G.A. & Munro, D.B. 1989. Taxonomy of species of North American Stachys (Labiatae) found north of Mexico. Le Naturaliste Canadien 116(1): 35-51. Abstract Reference page

1990s[edit]

  • Mulligan, G.A. 1990. Poison ivy, western poison oak, and poison sumac (revised edition). Agriculture Canada Publ. 1699E, 13 pp.
  • Mulligan, G.A. 1990. L'herbe à la puce, le sumac à vernis et les rhus diversiloba (revisée). Agriculture Canada Publ. 1699F. 13 pp.
  • Mulligan, G.A., and D.B. Munro 1990. Poisonous plants of Canada. Agriculture Canada Publ. 1842E. 96 pp.
  • Mulligan, G.A., and D.B. Munro 1990. Plantes toxiques du Canada. Agriculture Canada Publ. 1842F. 98 pp.
  • Mulligan, Julie, and G.A. Mulligan 1992. Purple loosestrife, friend or foe? Ontario Landscape News, June 4.
  • Mal, T.K., J. Lovette-Doust, and G.A. Mulligan 1992. The biology of Canadian weeds 100. Lythrum salicaria. Canadian J. Plant Science 72(4): 1305-1330. DOI: 10.4141/cjps92-164
  • Mulligan, G.A. 1995. Synopsis of the genus Arabis (Brassicaceae) in Canada, Alaska, and Greenland. Rhodora 97(890): 109–163. BHL Reference page

Mulligan, G.A., and W.J. Cody 1995. New information on the problem of the Asiatic cress, Rorippa crystallina Rollins (Brassicaceae). Canadian Field-Nat. 109: 111-112.

  • Mulligan, G.A. 1999. A tribute to Raymond John Moore, 1918-1998. Canadian Field-Nat. 113: 342-344.

2000s[edit]

2010s[edit]

References[edit]

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