Bibiography:  Reference Listing
for the Asteraceae

Al-Shehbaz, I. A. 1987. The genera of Alysseae in the southeastern United States. Journal of the Arnold Arboretum 68(2):185-240.

Alexander, E.J. 1955. Thelesperma. N. Amer. Fl. II. 2:65-69.

Ammerman, E. 1944. A monographic study of the genus Palafoxia and its immediate allies. Ann. Missouri Bot. Gard. 31:249-277.

Anderberg, A. A. 1991. Taxonomy and phylogeny of the tribe Gnaphalieae (Asteraceae). Opera Botanica 104:1-195.

Anderson, L. C. 1970. Studies on Bigelowia (Astereae, Compositae). I. Morphology and taxonomy. Sida 3:451-463.

Anderson, L. C. 1971. New names and combinations in Trixis (Compositae). Brittonia 23:347-353.

Anderson, L. C. 1972. A monograph of the Mexican and Central American species of Trixis (Compositae). Memoirs of the New York Botanical Garden 22:1-68.

Anderson, L. C. 1977. Studies on Bigelovia (Asteraceae). III. Cytotaxonomy and biogeography. Systematic Botany 2:209-218.

Anderson, L. C. 1980. Morphology and biogeography of Chrysothamnus nauseosus ssp. texensis (Asteraceae): a new Guadalupe Mountains endemic. Southwestern Naturalist 25:197-206.

Anderson, L.C. and J.B. Creech. 1975. Comparative leaf anatomy of Solidago and related Asteraceae. Amer. J. Bot. 62:486-493.

Babcock, E. B. 1947. The Genus Crepis (part II). Systematic Treatment. University of California Publication in Botany. University of California Press, Berkley and Los Angeles.

Bailey, L. H. 1976. Hortus Third: a concise dictionary of plants cultivated in the United States and Canada. MacMillan Publishing Co., Inc. New York.

Baker, R. J. and B. L. Turner. No Date. Taxonomy of Flyriella (Asteraceae-Eupatorieae). Sida 11:300-317.

Ballard, R. 1986. Bidens pilosa complex (Asteraceae) in North and Central America. American Journal of Botany 73:1452-1465.

Baltzer, E.A. 1944. A monographic study of the genus Palafoxia and its immediate allies. Ann. Missouri Bot. Gard. 31:249-277.

Barber, S.C. and J.R. Estes. 1978. Comparative pollination ecology of Pyrrhopappus geiseri and P. carolinianus. Amer. J. Bot. 65:562-566.

Barkley, T. M. 1962. A revision of Senecio aureus Linn. and allied species Trans. Kansas Acad. Sci. 65:318-408.

Barkley, T. M. 1978. Senecio. In. North American Flora series II (10)50-139.

Barkley, T. M. 1980. Taxonomic notes on Senecio tomentosus and its allies (Asteraceae). Brittonia 32:291-308.

Barkley, T. M. 1981. Senecio and Erechtites (Compositae) in the North American flora: supplementary notes Brittonia 33:523-527.

Barkley, T. M. 1985a. Generic boundaries in the Senecioneae. Taxon 34:17-21.

Barkley, T. M. 1985b. Infrageneric groups in Senecio, s.l., and Cacalia, s.l. (Asteraceae: Senecioneae) in Mexico and Central America Brittonia 37:211-218.

Barkley, T. M. 1986. Asteraceae. In: Great Plains Flora Association Flora of the Great Plains Pp. 838-1021, Univ. Press of Kansas, Lawrence.

Barkley, T. M. 1988. Variation among aureoid senecios of North America: a geohistorical interpretation Bot. Rev. 54:82-106.

Barkley, T. M. 1999. The segregates of Senecio, S. L. and Cacalia, S. L., in the flora of North America north of Mexico. Sida 18(3): 661-672.

Barkley, T. M. 2000. Senecio quaylei (Asteraceae: Senecioneae), a new species from north central Texas, U.S.A Sida 19(2): 285.

Barkley, T. M., B. L. Clark, and A. M. Funston. 1996. The segregate genera of Senecio sensu lato and Cacalia sensu lato (Asteraceae: Senecioneae) in Mexico and Central America. In D. J. N. Hind and H. J. Beentje (eds.) Compositae: Systematics, Proceedings of the International Compositae Conference, Kew, 1994.

Barkley, T.M. and A. Cronquist. 1978. Erechtites. In: N. Amer. Fl. II. 10:139-142.

Baskin, J. M., K. M. Snyder, and C. C. Baskin. 1993. Nomenclatural history and taxonomic status of Echinacea angustifolia, E. pallida, and E. tennesseensis (Asteraceae). Sida 15(4):597- 604.

Bayer, R. J. 1984. Chromosome numbers and taxonomic notes for North American species of Antennaria (Asteraceae: Inuleae) Syst. Bot. 9:74-83.

Bayer, R. J. 1985. Investigations into the evolutionary history of the polyploid complexes in Antennaria (Asteraceae: Inuleae). II. The A. parlinii complex Rhodora 87:321-339.

Bayer, R. J. and G. L. Stebbins. 1982. A revised classification of Antennaria (Asteraceae: Inuleae) of the eastern United States. Systematic Botany 7:300-313.

Beaman, J. H. 1957. The systematics and evolution of Townsendia (Compositae) Contr. Gray Herb. 183:1-151.

Becker, K. 1975. New combinations in Wedelia Jacq. (Asteraceae). Phytologia 31:25.

Belcher, R. O. 1956. A revision of the genus Erechtites (Compositae) with inquiries into Senecio and Arrhenechthites Ann. Missouri Bot. Gard. 43:1-85.

Bierner, M. W. 1972. Taxonomy of Helenium sect. Tetrodus and a conspectus of North American Helenium (Compositae). Brittonia 24:331-355.

Bierner, M. W. 1989. Taxonomy of Helenium sect. Amarum (Asteraceae). Sida 13(4):453-459.

Bierner, M. W., J. G. Diaz, B. Barba, and W. Herz. 1992. Tetraneuris linearifolia var. arenicola (Asteraceae: Heliantheae): A new variety from South Texas. Sida 15(2):231-239.

Bierner, M.W. 1990. Present status of Amblyolepis (Asteraceae: Heliantheae) Madroño 37:133-140.

Bierner, M.W. and R.K. Jansen. 1998. Systematic implications of DNA restriction site variation in Hymenoxys and Tetraneuris (Asteraceae, Helenieae, Gaillardiinae) Lundellia 1:17-26.

Blake, S.F. 1918. A revision of the genus Viguiera Contr. Gray Herb. 54:1-205.

Bolick, M.R. 1985. Cladistic analysis of Iva: a case in point Taxon 34:81-84.

Boom, B. M. 1982. Synopsis of Isoëtes in the southeastern United States. Castanea 47:38-59.

Boulos, L. 1972-74. R‚vision syst‚matique du genere Sonchus L Bot. Not. 125:287-319; 126:155-196; 127:7-37, 402-451.

Boulos, L. 1976. Sonchus. In: T.B. Tutin, V.H. Heywood, N.A. Burges, D.M. Moore, D.H. Valentine, S.M. Walters, and D.A. Webb, eds Flora Europaea 4:327-328.

Bremer, K. 1994. Asteraceae cladistics & classification Timber Press, Portland, OR.

Bremer, K., A.A. Anderberg, P.O. KARIS, and J. Lundberg. 1994. Tribe Eupatorieae (Chapter 23). In: Asteraceae cladistics & classification Pp. 625-680 Timber Press, Portland, OR.

Brown, L. E. 1986b. A new species of Rudbeckia (Asteraceae-Heliantheae) from hillside bogs in East Texas. Phytologia 61:367-371.

Brown, R. C. 1978. Biosystematics of Psilostrophe (Compositae: Helenieae). II. Artificial hybridization and systematic treatment. Madroño 25:187-201.

Cabrera, A. L. 1949. Sinopsis del Género Soliva (Compositae) Notas Mus. La Plata (Bot.) 14(70):123-139

Cabrera, A. L. 1977. Mutsieae-systematic review. In. V. H. Heywood, J. B. Harborne, and B. L. Turner (eds.). The Biology and Chemistry of the Compositae. 2:1039-1066.

Canne, J. M. 1969. A revision of the genus Galinsoga (Compositae: Helenieae). University of Kansas Science Bulletin 48:225-267.

Carlquist, S. 1976. Tribal interrelationships and phylogeny of the Asteraceae. Aliso 8:465-492.

Chambers, K. L. 1973. The genera of Lactuceae (Compositae) in the southeastern United States, B. S. Vuilleumier (ed.). Journal of the Arnold Arboretum 54:52.

Chandler, J.M., C.-C. Jan, and B.H. Beard. 1986. Chromosomal differentiation among the annual Helianthus species Syst. Bot. 11:354-371.

Channell, R.B. 1957. A revisional study of the genus Marshallia (Compositae) Contr. Gray Herb. 181:41-132.

Chapman, G. C. and S. B. Jones. 1978. Biosystematics of the Texanae Vernonias (Vernonieae: Compositae). Sida 7:264-281.

Clausen, J. 1949. Evolutionary patterns in the genus Crepis Evolution 3:185-188.

Clewell, A. F. and J. W. Wooten. 1971. A revision of Ageratina (Compositae). Brittonia 23:123-143.

Clonts, J.A. and S. McDaniel. 1978. Elephantopus N. Amer. Fl. II. 10:196-202.

Coleman, J.R. 1966. A taxonomic revision of section Ximenesia of the genus Verbesina (Compositae) Amer. Midl. Naturalist 76:475-481.

Coleman, J.R. 1968. Verbesina, a cytotaxonimic study Rhodora 70:95-102.

Coleman, J.R. 1977. A summary of experimental hybridization in Verbesina (Compositae) Rhodora 79:17-31.

Cory, V. L. 1946. The genus Palafoxia in Texas. Rhodora 48:84-86.

Cory, V. L. 1947a. A new Dyssodia from Texas. Rhodora 49:161-163.

Cox, P. B. and L. E. Urbatsch. 1989. Rudbeckia texana, a taxon worthy of specific status (Asteraceae: Heliantheae). Phytologia 67:366-367.

Cox, P. B. and L. E. Urbatsch. 1994. A taxonomic revision of Rudbeckia subg. macrocline (Asteraceae: Heliantheae; Rudbeckiinae). Castanea 59:300-318.

Cox, P.B. and L.E. Urbatsch. 1990. A phylogenetic analysis of the coneflower genera (Asteraceae: Heliantheae Syst. Bot. 15:394-402.

Crawford, D.J. and E.B. Smith. 1982. Allozyme divergence between Coreopsis basalis and C. wrightii (Compositae) Syst. Bot. 7:359-364.

Crawford, D.J. and E.B. Smith. 1984. Allozyme divergence and intraspecific variation in Coreopsis grandiflora (Compositae) Syst. Bot. 9:219-225.

Crawford, D.J., J.D. Palmer, and M. Kobayashi. 1992. Chloroplast DNA restriction site variation and the evolution of the annual habit in North American Coreopsis (Asteraceae). In: P.S. Soltis, D.E. Soltis, and J.J. Doyle, eds Molecular Systematics of Plants Pp. 280-294, Chapman and Hall, New York.

Croat, T. 1972. Solidago canadensis complex in the Great Plains Brittonia 24:317-326.

Cronquist, A. 1943. The separation of Erigeron from Conyza Bull. Torrey Bot. Club 70:629-632.

Cronquist, A. 1947. A revision of the North American species of Erigeron north of Mexico Brittonia 6:121-302.

Cronquist, A. 1977. The Compositae revisted. Brittonia 29:137-153.

Cronquist, A. 1980. Vascular Flora of the Southeastern United States. Vol. 1, Asteraceae. The University of North Carolina Press, Chapel Hill, NC.

Cronquist, A. 1985. History of generic concepts in the Compositae Taxon 34:6-10.

Cronquist, A., T. M. Barkley, G. Morton, R. I. Ediger, R. W. Pippen, and J. L. Strother. 1978. Compositae tribe Senecioneae. North American Flora. II. 10:14-179.

Curry, M. G. 1976. Elephantopus (Compositae) of Louisiana: taxonomy, distribution, and field key. Proceedings of the Louisiana Academy of Sciences 39:50-53.

Defilipps, R.A. 1976. Hypochoeris. In: Tutin, T.G., V.H. Heywood, N.A. Burges, D.M. Moore, D.H. Valentine, S.M. Walters, and D.A. Webb, eds Flora Europaea 4:308-310.

DeJong, D. C. D. 1965. A systematic study of the genus Astranthium (Compositae, Asterae). Michigan State University Museum Biological Series 2:431-528.

Desrochers, A.M., J.F. Bain, and S.I. Warwick. 1988. The biology of Canadian weeds 89, Carduus nutans L. and Carduus acanthoides L. Canad. J. Plant Sci. 68:1053-1068.

Diggs, G. M., Jr., R. J. O'Kennon, and B. Lipscomb. 1997. Hypochaeris glabra (Asteraceae), a new record for Texas. Sida 17(3): 633.

Dillon, M. O. 1984. A systematic study of Flourensia (Asteraceae, Heliantheae). Fieldiana: botany 16:1-66.

Dorr, L. J. and J. Olsen. 1983. Lectotypification of Verbesina texana Buckl. (Asteraceae). Sida 10:82-85.

Duncan, W. H. 1967. Woody vines of the southeastern states. Sida 3:1-76.

Duncan, W. H. and M. B. Duncan. 1988. Trees of the Southeastern United States. The University of Georgia Press, Athens, GA.

Duncan, W.H., P.L. Piercy, S.D. Feurt, and R. Starling. 1957. Toxicological studies of southeastern plants II, Compositae Econ. Bot. 11:75-85.

Ediger, R. I. 1970. Revision of section Suffruticosi of the genus Senecio (Compositae). Sida 3:504-524.

Elisens, W. J., R. D. Boyd, and A. D. Wolfe. 1992. Genetic and morphological divergence among varieties of Aphanostephus skirrhobasis (Asteraceae-Astereae) and related species of different chromosome numbers. Systematic Botany 17(3):380-394.

Fairey, J. E. 1967. The genus Scleria in the southeastern United States. Castanea 32:37-71.

Faust, W. Z. 1972. A biosystematic study of the interior species group of the genus Vernonia (Compositae). Brittonia 24:363-378.

Faust, W.Z. and S.B. Jones, Jr. 1973. The systematic value of trichome complements in a North American group of Vernonia (Compositae) Rhodora 75:517-528.

Feddema, C. 1972. Sclerocarpus uniserialis (Compositae) in Texas and México. Phytologia 23:201-209.

Fernald, M.L. 1940b. A synopsis of Boltonia Rhodora 42:482-492.

Freeman, C. C. and T. M. Barkley. 1995. A synopsis of the genus Packera (Asteraceae: Senecioneae) in Mexico. Sida 16(4):669-709.

Gaiser, L.O. 1946. The genus Liatris Rhodora 48:165-183, 216-263, 326, 331-382, 393-412.

Gandhi, K. N. and P. A. Fryxell. 1990. A nomenclatural note on Eupatorium fistulosum (Asteraceae). Sida 14(1):129-131.

Gandhi, K. N. and R. D. Thomas. 1989. Asteraceae of Louisiana. Sida Miscellany No. 4:1-202.

Gandhi, K.N. and R.D. Thomas. 1984. Observations on the floral structure of Dyssodia tenuiloba (DC.) B.L. Robinson and Matricaria matricarioides (Less.) T.C. Porter (Asteraceae) Phytologia 55:253-255.

Gastony, G. J. 1988. The Pellaea glabella complex: electrophoretic evidence for the derivations of the agamosporous taxa and a revised taxonomy. American Fern Journal 78:44-67.

Gates, F.C. 1945. Amphiachyris dracunculoides as a poisonous plant Trans. Kansas Acad. Sci. 48:87-89.

Gillis, W. T. 1977. Pluchea revisited. Taxon 26:587-591.

Gleason, H. A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. 2nd ed. The New York Botanical Garden, Bronx, NY.

Gleason, H.A. 1906. A revision of the North American Vernonieae Bull. New York Bot. Gard. 4:144-243.

Gleason, H.A. 1922. Vernonieae N. Amer. Fl. 33:47-110.

Gleason, H.A. 1923. Evolution and geographical distribution of the genus Vernonia in North America Amer. J. Bot. 10:187-202.

Godfrey, R. K. and J. W. Wooten. 1978. Aquatic and Wetland Plants of Southeastern United States. Monocotyledons. University of Georgia Press, Athens.

Godfrey, R. K. and J. W. Wooten. 1981. Aquatic and Wetland Plants of Southeastern United States. Dicotyledons. University of Georgia Press, Athens.

Godfrey, R.K. 1952. Pluchea, section Stylimnus, in North America J. Elisha Mitchell Sci. Soc. 68:238-271.

Grant, W.F. 1953. A cytotaxonomic study in the genus Eupatorium Amer. J. Bot. 40:729-742.

Grashoff, J. L. 1972. A systematic study of the North and Central American species of Stevia. Ph.D. Disseration. University of Texas, Austin.

Grashoff, J. L. 1974. Novelties in Stevia. Brittonia 26:347-384.

Greenman, J.M. 1915-1918. Monograph of the North and Central American species of the genus Senecio Ann. Missouri Bot. Gard. 2:573-627; 3:85-195; 4:15-37; 5:37-109.

Greer, L.F. 1997. Thelesperma curvicarpum (Asteraceae), an achene form in populations of T. simplicifolium var. simplicifolium and T. filifolium var. filifolium SouthW. Naturalist 42:242-244.

Hall, G.W. 1967. A biosystematic study of the North American complex of the genus Bidens (Compositae) Ph.D. dissertation, Indiana Univ., Bloomington.

Hall, H. M. 1928. The genus Haplopappus. Carnegie Institution of Washington, Publication No. 389.

Hall, H.M. and F.E. Clements. 1923. The phylogenetic method in taxonomy: The North American species of Artemisia, Chrysothamnus and Atriplex Publ. Carnegie Inst. Wash. 326:1-355.

Hanesworth, V. 1993. Crepis setosa (Asteraceae) a newly established introductant in Central Texas. Sida 15(4):658.

Hardin, J. W. 1971. Studies of the southeastern United States flora. II. The gymnosperms. Journal of the Elisha Mitchell Scientific Society 87:43-50.

Harms, V.L. 1965. Biosystematic studies in the Heterotheca subaxillaris complex Trans. Kansas Acad. Sci. 68:244-257.

Harms, V.L. 1968. Nomenclatural changes and taxonomic notes on Heterotheca, including Chrysopsis, in Texas and adjacent states Wrightia 4:8-20.

Harms, V.L. 1974. A preliminary conspectus of Heterotheca sect. Chrysopsis Castanea 39:155-165.

Hartman, R. L. and M. A. Lane. 1987. A new species of Machaeranthera section Psilactis (Asteraceae-Astereae) from Central Texas. Brittonia 39:253-257.

Hartman, R.L. 1990. A conspectus of Machaeranthera (Asteraceae: Astereae) Phytololgia 68:439-465.

Heard, S. B. and J. C. Semple. 1988. The Solidago rigida complex (Compositae: Astereae): a multivariate morphometric analysis and chromosome numbers. Canadian Journal of Botany 66:1800-1807.

Heiser, C.B., Jr. 1951. The sunflower among the Noth American Indians Proc. Amer. Phil. Soc. 95:432-448.

Heiser, C.B., Jr. 1954. Variation and subspeciation in the common sunflower, Helianthus annuus Amer. Mid. Naturalist 52:287-305.

Heiser, Jr., C. B., D. M. Smith, S. B. Clevenger, and W. C. Martin, Jr. 1969. The North American sunflowers (Helianthus). Memoirs of the Torrey Botanical Club 22:1-218.

Heywood, J.S. and D.A. Levin. 1984. Allozyme variation in Gaillardia pulchella and G. amblyodon (Compositae): Relation to morphological and chromosomal variation and to geographical isolation Syst. Bot. 9:448-457.

Heywood, V. H. and C. J. Humphries. 1977. Anthemideae-systematics review. In. V. H. Heywood, J. B. Harborne, and B. L. Turner (eds.). The Biology and Chemistry of the Compositae 2:851-898.

Heywood, V. H., J. B. Harborne, and B. L. Turner (eds.). 1977. The Biology and Chemistry of the Compositae. Vols. I -II. Academic Press, London, U.K.

Hillard, O.M. and B.L. Burtt. 1981. Some generic concepts in Compositae-Gnaphaliinae J. Linn. Soc., Bot. 82:181-232.

Holmes, W. C. and B. L. Lipscomb. 1992. First documentation of Mikania cordifolia (Compositae) in Texas. Sida 15(1):163.

Holmes, W.C. 1990. The genus Mikania (Compositae-Eupatorieae) in Mexico Sida, Bot. Misc. 5:1-45.

Howell, J.T. 1959. Distribution data on weedy thistles in western North America Leafl. W. Bot. 9:17-29.

Jackson, R.C. 1960. A revision of the genus Iva L Univ. Kansas Sci. Bull. 41:793-874.

Jackson, R.C. 1963. Cytotaxonomy of Helianthus ciliaris and related species of the southwestern U.S. and Mexico Brittonia 15:260-271.

Jackson, S.W. 1963. Hybridization among three species of Ratibida Univ. Kansas Sci. Bull, 44:3-27.

Jansen, R. K. 1985a. The Systematics of Acmella (Asteraceae-Heliantheae). Systematic Botany Monograph 8:1-115.

Jansen, R.K. 1981. Systematics of Spilanthes (Compositae: Heliantheae) Syst. Bot. 6:231-257.

Jansen, R.K. 1985b. Systematic significance of chromosome number in Acmella (Asteraceae) Amer. J. Bot. 72:1835-1841.

Jansen, R.K., E.B. Smith, and D.J. Crawford. 1987. A cladistic study of North American Coreopsis (Asteraceae: Heliantheae) Pl. Syst. Evol. 157:73-84.

Jansen, R.K., H.J. Michaels, and J.D. Palmer. 1991. Phylogeny and character evolution in the Asteraceae based on chloroplast DNA restriction site mapping Syst. Bot. 16:98-115.

Jansen, R.K., H.J. Michaels, R.S. Wallace, K.-J. Kim, S.C. Keeley, L.E. Watson, and J.D. Palmer. 1992. Chloroplast DNA variation in the Asteraceae: Phylogenetic and evolutionary implications. In: P.S. Soltis, D.E. Soltis, and J.J. Doyle, eds Molecular systematics of plants Pp. 252-279, Chapman and Hall, New York.

Johnson, R. R. 1969. Monograph of the plant genus Porophyllum (Compositae: Helenieae). University of Kansas Science Bulletin 48:225-267.

Johnston, M. C. 1967. Ericameria austrotexana M. C. Johnston (Compositae), nomen novum. Southwestern Naturalist 12:106-109.

Johnston, M.C. 1956. The Texas species of Dyssodia (Compositae) Field & Lab. 24:60-69.

Johnston, M.C. and B.L. Turner. 1962. Chromosome numbers of Dyssodia (Compositae: Tagetinae) and phyletic interpretations Rhodora 64:2-15.

Jones, A. G. 1978a. The taxonomy of Aster section Multiflori (Asteraceae). I. Nomenclatural review and formal presentation of taxa. Rhodora 80:319-357.

Jones, A. G. 1980. A classification of the New World species of Aster (Asteraceae). Brittonia 32:230-239.

Jones, A. G. 1981. Aster laevis (Asteraceae) new for Texas-a significant range extension and a new variety. Sida 9:171-175.

Jones, A. G. 1984. Nomenclatural notes on Aster (Asteraceae). II. New combinations and some transfers. Phytologia 55:373-387.

Jones, A. G. 1985. Nomenclatural change in Aster (Asteraceae). Bulletin of the Torrey Botanical Club 110:39-42.

Jones, A. G. 1987. New combinations and status changes in Aster (Asteraceae). Phytologia 63:131-133.

Jones, A. G. 1992. Aster & Brachyactis (Asteraceae) in Oklahoma. Sida, Botanical Miscellany No. 8.

Jones, A.G. 1978b. The taxonomy of Aster section Multiflori (Asteraceae)--II Biosystematic investigations, Rhodora 80:453-490.

Jones, A.G. and D.A. Young. 1983. Generic concepts of Aster (Asteraceae): A comparison of cladistic, phenetic, and cytological approaches Syst. Bot. 8:71-84.

Jones, Jr., S. B. 1982. The genera of Vernonieae (Compositate) in the southeastern United States. Journal of the Arnold Arboretum 63(4):489-507

Jones, Jr., S. B. and W. Z. Faust. 1978. Compositae tribe Vernonieae. North American Flora. II. 10:180-202.

Jones, R. L. 1983. A systematic study of Aster section patentes (Asteraceae). Sida 10:41-81.

Jones, S.B. 1970. Scanning electron microscopy of pollen as an aid to the systematics of Vernonia (Compositae) Bull. Torrey Bot. Club 97:323-335.

Jordan, R. 1991. Putative natural hybrid of Eupatorium capillifolium x E. glaucescens from Hardin County, Texas. Phytologia 71(5):360-361.

Kapoor, B.M. and J.R. Beaudry. 1966. Studies on Solidago VII, The taxonomic status of the taxa Brachchaeta, Brintonia, Chrysoma, Euthamia, Oligoneuron and Petradoria in relation to Solidago, Canad. J. Genet. Cytol, 8:422-433.

Karis, P.O. 1995. Cladistics of the subtribe Ambrosiinae (Asteraceae: Heliantheae) Syst. Bot. 20:40-54.

Karis, P.O. and O. Ryding. 1994. Tribe Helenieae (Chapter 21). In: K. Bremer Asteraceae cladistics & classification Pp. 521-558, Timber Press, Portland, OR.

Keeley, S.C. and R.K. Jansen. 1991. Evidence from chloroplast DNA for the recognition of a new tribe, the Tarchonantheae, and the tribal placement of Pluchea (Asteraceae) Syst. Bot. 16:173-181.

Keeley, S.C. and S.B. Jones, Jr. 1979. Distribution of pollen types in Vernonia (Vernonieae: Compositae) Syst. Bot. 4:195-202.

Keil, D. J. 1975. Pectis cylindrica (Compositae) established as a member of the Texas flora and confirmed as a distinct species. Southwestern Naturalist 20:286-287.

Keil, D. J. 1977. A revision of Pectis section Pectothrix (Compositae: Tageteae). Rhodora 79:32-78.

Kessler, E. 1987. Carthamus lanatus L. (Asteraceae: Cynareae)-a potentially serious plant pest in Oklahoma Proc. Oklahoma Acad. Sci. 67:39-43.

Kim, K. J. and B. L. Turner. 1992. Systematic overview of Krigia (Asteraceae-Lactuceae) Brittonia 44(2):173-198.

Kim, K. J., B. L. Turner, and R. K. Jansen. 1992b. Phylogentic and evolutionary implications of inter specific chloroplast DNA variation in Krigia (Asteraceae-Lactuceae). Systematic Botany 17:449-469.

Kim, K.-J. and T.J. Mabry. 1991. Phylogenetic and evolutionary implications of nuclear ribosomal DNA variation in dwarf dandelions (Krigia-Lactuceae-Asteraceae) Pl. Syst. Evol. 177:53-69.

Kim, K.-J., R.K. Jansen, and B.L. Turner. 1992a. Evolutionary implications of intraspecific chloroplast DNA variation in dwarf dandelions (Krigia; Asteraceae) Amer. J. Bot. 79:708-715.

King, B. L. and S. B. Jones. 1975. The Vernonia lindheimeri complex (Compositae). Brittonia 27:74-86.

King, R. M. and H. Robinson. 1970a. Studies in the Eupatorieae (Compositae). XVII. New combinations in Fleischmannia. Phytologia 19:201-207.

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