References - Botanical Research Institute of Texas

_____ and W.H. EVANS. 1890. A revision of the North American
Cornaceae. Bot. Gaz. (Crawfordsville) 15:30–38, 86–97.
COULTER, J.M.and J.N. ROSE. 1900. Monograph of the North
American Umbelliferae. Contr. U.S. Natl. Herb. 7:1–256.
COVAS, G. 1949. Taxonomic observations on the North
American species of Hordeum.Madroño 10:1–21.
COVILLE,F.V.1890. Revision of the United States species of the
genus Fuirena. Bull.Torrey Bot. Club 17:1–8.
_____ and N.L. BRITTON. 1908. Grossulariaceae. N. Amer. Fl.
22:193–225.
COX,C.B.and P.D. MOORE. 1993. Biogeography: An ecological
and evolutionary approach, 5th ed. Blackwell Scientific
Publications, Oxford, England, U.K.
COX, P.A.1988. Hydrophilous pollination. Ann. Rev. Ecol. Syst.
19:261–279.
COX,P.B.and L.E. URBATSCH.1990.A phylogenetic analysis of the
coneflower genera (Asteraceae: Heliantheae). Syst. Bot.
15:394–402.
_____. 1994. A taxonomic revision of Rudbeckia sub. Macrocline
(Asteraceae:Heliantheae:Rudbeckiinae).Castanea 59:300–318.
COX,P.W.and P. LESLIE. 1991.Texas trees. Corona Publishing Co.,
San Antonio,TX.
CRAGG,G.M., M.R. BOYD,M.R.GREVER, and S.A. SCHEPARTZ. 1995.
Pharmaceutical prospecting and the potential for pharmaceutical
crops, natural product drug discovery and development
at the United States National Cancer Institute.
Ann. Missouri Bot. Gard. 82:47–53.
CRAIG, R.T.1945. The Mammillaria handbook. Abbey Garden
Press, Pasadena, CA.
CRANE,P.R.and P. KENRICK. 1997.Problems in cladistic classification:
Higher-level relationships in land plants. Aliso 15:87–104.
CRANFILL, R.B.1993a. Dennstaedtiaceae. In: Flora of North
America Editorial Committee, eds. Fl. North Amer.
2:198–205. Oxford Univ. Press, New York and Oxford.
_____. 1993b. Blechnaceae. In: Flora of North America Editorial
Committee, eds. Fl. North Amer. 2:223–227. Oxford Univ.
Press, New York and Oxford.
CRAWFORD, D.J.1975. Systematic relationships in the narrowleaved
species of Chenopodium of the western United
States. Brittonia 27:279–288.
_____, 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.
CRAWFORD, D.J.and E.B. SMITH. 1982. Allozyme divergence
between Coreopsis basalis and C. wrightii (Compositae). Syst.
Bot. 7:359–364.
____ and _____. 1984. Allozyme divergence and intraspecific
variation in Coreopsis grandiflora (Compositae). Syst. Bot.
9:219–225.
CRAWFORD, D.J.and H.D. WILSON. 1986. Chenopodium. In:Great
Plains Flora Association. Flora of the Great Plains. Pp. 166–173.
Univ. Press of Kansas, Lawrence.
CRENSHAW,T.C. 1983.Texas blackland heritage.Texian Press,Waco,TX.
CRINS,W.J.1989. The Tamaricaceae in the southeastern United
COULTER & ROSE/LITERATURE CITED 1469
States. J. Arnold Arbor. 70:403–425.
_____. 1990. Phylogenetic considerations below the sectional
level in Carex.Canad. J. Bot. 68:1433–1440.
_____. 1991.The genera of Paniceae (Gramineae: Panicoideae)
in the southeastern United States.J.Arnold Arbor.Supp.Ser.
1:171–312.
CRISPEELS, M.J.and D. SADAVA. 1977. Plants, food, and people.
W.H. Freeman and Co., San Francisco, CA.
CROAT,T. 1972. Solidago canadensis complex in the Great Plains.
Brittonia 24:317–326.
CROMPTON, C.W.,I.V.HALL, K.I.N. JENSEN, and P.D. HILDEBRAND.
1988. The biology of Canadian weeds. 83. Hypericum perforatum
L. Canad. J. Plant Sci. 68:149–162.
CRONK,Q.C.B. and J.L.FULLER. 1995.Plant invaders:The threat to
natural ecosystems. Chapman and Hall, New York.
CRONQUIST,A.1943.The separation of Erigeron from Conyza.Bull.
Torrey Bot. Club 70:629–632.
_____. 1945.Studies in the Sapotaceae,III. Dipholis and Bumelia.
J. Arnold Arbor. 26:435–471.
_____. 1946. Studies in the Sapotaceae, II Survey of the North
American genera. Lloydia 9:241–292.
_____. 1947. A revision of the North American species of
Erigeron north of Mexico. Brittonia 6:121–302.
_____. 1977.The Compositae revisited. Brittonia 29:137–153.
_____. 1980. Asteraceae. Vascular flora of the southeastern
United States 1:1–261. The Univ. of North Carolina Press,
Chapel Hill.
_____. 1981.An integrated system of classification of flowering
plants. Columbia Univ. Press, New York.
_____. 1985. History of generic concepts in the Compositae.
Taxon 34:6–10.
_____. 1988. The evolution and classification of flowering
plants, 2nd ed. New York Bot. Garden, Bronx.
_____. 1993. A commentary on the general system of classification
of flowering plants. In: Flora of North America
Editorial Committee, eds. Fl. North Amer. 1:272–293. Oxford
Univ. Press, New York and Oxford.
_____, A.H. HOLMGREN, N.H.HOLMGREN, J.L.REVEAL, and P.K.
HOLMGREN.1977.Intermountain flora:Vascular plants of the intermountain
west, U.S.A.Vol. 6. Columbia Univ. Press, New York.
CRONQUIST,A.and D.D. KECK. 1957. A reconstitution of the genus
Machaeranthera.Brittonia 9:231–239.
CRONQUIST,A.and R.F. THORNE. 1994. Nomenclatural and taxonomic
history. In: H.-D. Behnke and T.J. Mabry, eds.
Caryophyllales: Evolution and systematics. Pp. 5–25.
Springer-Verlag, New York.
CROSSWHITE,F.S.1980.Dry country plants of the south Texas Plains.
Desert Pl.2:141–179.
_____. 1982. Corn (Zea mays) in relation to its wild relatives.
Desert Pl. 3:193–201.
_____. 1983. Selenium and Castilleja.Desert Pl. 5:96.
_____. 1984. Crassulacean acid metabolism. Desert Pl. 5:192.
_____ and C.D. CROSSWHITE 1981. Hummingbirds as pollinators
of flowers in the red-yellow segment of the color spectrum,
with special reference to Penstemon and the “open
habitat.”Desert Pl. 3:156–170.