Bibiography:  Author Listing
Author group 'W'


Wagenitz, G. 1992. The Asteridae: Evolution of a concept and its present status Ann. Missouri Bot. Gard. 79:209-217.

Wagenknecht, B.L. 1960. Revision of Heterotheca section Heterotheca Rhodora 62:61-76, 97-107.

Wagner, D. H. 1979. Systematics of Polystichum in western North America north of México. Pteridologia 1:1-64.

Wagner, D.H. 1993. Polystichum. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 2:290-299 Oxford Univ. Press, New York and Oxford.

Wagner, F.H. 1948. The bur clovers (Medicago) of Texas Field & Lab. 16:3-7.

Wagner, W. L. 1983. New species and combinations in the genus Oenothera (Onagracae). Annals of the Missouri Botanical Garden 70:194-196.

Wagner, W. L. 1984. Reconsideration of Oenothera subgenus Gauropsis (Onagraceae). Annals of the Missouri Botanical Garden 71:1114-1127.

Wagner, W. L. 1986. New taxa in Oenothera (Onagraceae). Annals of the Missouri Botanical Garden 73:475-480.

Wagner, W. L., R. E. Stockhouse, and W. M. Klein. 1985. The systematics and evolution of the Oenothera caespitosa species complex (Onagraceae). Missouri Botanical Garden Monograph 12:2-103.

Wagner, W.H., Jr. 1954. Reticulate evolution in the Appalachian Aspleniums Evolution 8:103-118.

Wagner, W.H., Jr. and A.R. Smith. 1993. Pteridophytes. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 1:247-266 Oxford Univ. Press, New York and Oxford.

Wagner, W.H., Jr. and F.S. Wagner. 1993. Ophioglossaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 2:85-106 Oxford Univ. Press, New York and Oxford.

Wagner, W.H., Jr. and J.M. Beitel. 1992. Generic classification of modern North American Lycopodiaceae Ann. Missouri. Bot. Gard. 79:676-686.

Wagner, W.H., Jr. and J.M. Beitel. 1993. Lycopodiaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 2:18-37 Oxford Univ. Press, New York and Oxford.

Wagner, W.H., Jr., R.C. MORAN, and C.R. Werth. 1993. Aspleniaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 2:228-245 Oxford Univ. Press, New York and Oxford.

Wagner, W.L., D.R. Herbst, and S.H. Sohmer. 1990. Manual of the flowering plants of Hawaii, 2 vols Univ. Hawaii Press and Bishop Museum Press, Honolulu.

Wagnon, H.K. 1952. A revision of the genus Bromus, section Bromopsis, of North America Brittonia 7:415-480.

Wagstaff, S.J. and R.G. Olmstead. 1997. Phylogeny of Labiatae and Verbenaceae inferred from rbcL sequences Syst. Bot. 22:165-179.

Wahl, H.A. 1954. A preliminary study of the genus Chenopodium in North America Bartonia 27:1-46.

Wallace, G.D. 1975. Studies of the Monotropoideae (Ericaceae): Taxonomy and distribution Wasmann J. Biol. 33:1-88.

Wallace, G.D. 1993. Ericaceae. In: J.C.Hickman, ed;The Jepson manual: Higher plants of California Pp. 544-567. Univ. of California

Wallace, G.D. 1995. Ericaceae Subfamily Monotropoideae. In: J.L. Luteyn, ed;Ericaceae Part II, the superior-ovaried genera Fl. Neotrop. Monogr. 66:13-27.

Walter C. Holmes, John F. Pruski, and Jason R. Singhurst 2000. Thymelaea passerina (Thymelaeaceae) new to Texas Sida 19(2): 403.

Walters, D.R. and D.J. Keil. 1996. Vascular plant taxonomy (4th ed.) Kendall/Hunt Publishing Company, Dubuque, Iowa.

Walters, S.M. and D.A. Webb. 1972. Veronica. In: T.G. Tutin, V.H. Heywood, N.A. Burges, D.M. Moore, D.H. Valentine, S.M. Walters, and D.A. Webb, eds Flora Europaea 3:242-251.

Walters, T. W. and R. Wyatt. 1982. The vascular flora of granite outcrops in the Central Mineral Region of Texas. Bulletin of the Torrey Botanical Club 109(3):344-364.

Walther, E. 1972. Echeveria. California Academy of Sciences, San Francisco.

Wang, J.K., ed. 1983. Taro: A review of Colocasia esculenta and its potentials Univ. of Hawaii Press, Honolulu.

Ward, D. B. 1976. Mitracarpus (Rubiaceae), a genus new to Florida and eastern North America. Rhodora 78:674-681.

Ward, D. B. 1977. Nelumbo lutea, the correct name for the American Lotus. Taxon 26:227-234.

Ward, D. B. 1988. Pueraria montana. The correct scientific name of the Kudzu. Castanea 63: 76-77.

Ward, D. B. 1998. A varietal correction in Pueraria montana (Leguminosae). Phytolotgia (84(6): 385-388. Note: this volume was not published until September 1999.

Ward, D.B. 1987. North American collections of Lepuropetalon spathulatum (Saxifragaceae) Florida Agric. Exp. Sta. J. Ser. 63:15-35.

Ward, D.B. and A.K. Gholson. 1987. The hidden abundance of Lepuropetalon spathulatum (c) and its first reported occurrence in Florida Castanea 52:59-67.

Warnock, B. H. 1970. Wildflowers of the Big Bend Country Texas. Sul Ross State University Press, Alpine, TX.

Warnock, B. H. 1974. Wildflowers of the Guadalupe Mountains and the Sand Dune Country, Texas. Sul Ross State University Press, Alpine, TX.

Warnock, B. H. 1977. Wildflowers of the Davis Mountains and Marathon Basin, Texas. Sul Ross State University Press, Alpine, TX.

Warnock, B. H. 1982. A new three-awn grass from Trans-Pecos, Texas. Sida 9(4):358-359.

Warnock, B. H. 1987. An index to epithets treated by King and Robinson: Eupatorieae (Asteraceae). Phytologia 62:345-431.

Warnock, B. H. and J. Mac Carpenter. 1994. Penstemon thurberi (Scrophulariaceae) new to Texas. Sida 16(1):207.

Warnock, M. H. 1981. Biosystematics of the Delphinium carolinianum complex (Ranunculaceae). Systematic Botany 6:38-54.

Warnock, M.J. 1987a. Synopsis of Delphinium (Ranunculaceae) in continental Mexico Rhodora 89:47-74.

Warnock, M.J. 1987b. An index to epithets treated by King and Robinson: Eupatorieae (Asteraceae) Phytologia 62:345-431.

Warnock, M.J. 1995. A taxonomic conspectus of North American Delphinium Phytologia 78:73-101.

Warnock, M.J. 1997a. Delphinium. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:196-240 Oxford Univ. Press, New York and Oxford.

Warnock, M.J. 1997b. Consolida. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:240-242 Oxford Univ. Press, New York and Oxford.

Warren, S. D. and S. L. Hatch. 1984. Bromus sterilis L. (Poaceae) new to Texas. Sida 10(3):257-258.

Wasshausen, D.C. 1966. Acanthaceae. In: C.L. Lundell, ed;Flora of Texas 1:223-282 Texas Research Foundation, Renner.

Watanabe, S; Himizu, A; Lewis, LA; Floyd, GL; Fuerst, PA 2000. Pseudoneochloris marina (Chlorophyta), a new coccoid Ulvophycean alga, and its phylogenetic position inferred from morphological and molecular data Journal of Phycology, 36 (3) pp. 596-604, 2000

Waterfall, U. T. 1951. The Callirhoë (Malvaceae) in Texas. Field and Laboratory 19(3):107-119.

Waterfall, U. T. 1958. A taxonomic study of the genus Physalis in North America, north of México. Rhodora 60:107-114; 128-142; 152-173.

Waterfall, U. T. 1979. Keys to the Flora of Oklahoma. 6th ed. Published by the author, Oklahoma State University, Stillwater.

Waterfall, U.T. 1971 [1972]. New taxa, combinations and distribution records for the Oklahoma flora Rhodora 73:552-555.

Waterfall, U.T. 1972. Keys to the flora of Oklahoma, 5th ed Published by the author for sale by the Student Union Bookstore, Oklahoma State Univ., Stillwater.

Watson, F.D. 1985. The nomenclature of pondcypress and baldcypress Taxon 34:506-509.

Watson, F.D. and J.E. Eckenwalder. 1993. Cupressaceae (family description and key to genera). In: Flora of North America Editorial Committee, eds, Fl. North Amer. 2:399-401 Oxford Univ. Press, New York and Oxford.

Watson, Jr., T. J. 1977. The taxonomy of Xylorhiza (Asteraceae-Astereae). Brittonia 29:199-216.

Watson, L.E. and J.E. Estes. 1990. Biosystematic and phenetic analysis of Marshallia (Asteraceae) Syst. Bot. 15:403-414.

Watson, WT; Kenerley, CM; Appel, DN 2000. Visual and infrared assessment of root colonization of apple trees by Phymatotrichopsis omnivora Plant Disease, 84 (5) pp. 539-543, 2000

Watt, G. 1907. The wild and cultivated cotton plants of the world A revision of the genus Gossypium, Longmans, Green, and Co., New York.

Wauer, R. H. 1980. Naturalist's Big Bend: An Introduction to the Trees and Shrubs, Wildflowers, Cacti, Mammals, Birds, Reptiles and Amphibians, Fish, and Insects. Texas A&M University Press, College Station.

Weakley, A. S. and P. M. Peterson. 1998. Taxonomy of the Sporobolus floridanus complex (Poaceae: Sporobolinae). Sida 18:247-270.

Weatherby, C.A. and S.F. Blake. 1916. Galium pilosum and its varieties Rhodora 18:190-195.

Weaver, J.E. and F.E. Clements. 1938. Plant ecology, 2nd. Ed McGraw-Hill Book Co., New York.

Webb, D.A. 1980. Leucojum. 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 5:76-77, Cambridge Univ. Press, Cambridge, England, U.K.

Webb, R.G. 1970. Reptiles of Oklahoma Univ. of Oklahoma Press, Norman.

Webber, J. M. and P. W. Ball. 1984. The taxonomy of the Carex rosea group (section Phaestoglochin) in Canada. Canadian Journal of Botany 62:2058-2073.

Webber, J.M. 1953. Yuccas of the southwest Agric. Monogr. U.S.D.A. 17:1-97.

Weber, W. A. 1985. The genus Teloxys (Chenopodiaceae). Phytologia 58:477-488.

Weber, W. A. 1991. New names and combinations, principally in the Rocky Mountain flora. VIII. Phytologia 70(4):231-233.

Webster, G. L. 1950. Observations on the vegetation and summer flora of the Stockton Plateau in northeastern Terrell County, Texas. Texas Journal of Science 5:158-177.

Webster, G. L. 1967. The genera of Euphorbiaceae in the southeastern United States. Journal of the Arnold Arboretum 48:303-430.

Webster, G. L. 1992. Realignments in American Croton (Euphorbiaceae). Novon 2:269-273.

Webster, G. L. 1993. A provisional synopsis of the sections of the genus Croton (Euphorbiaceae). Taxon 42(4):793-823.

Webster, G. L. 1994b. Synopsis of the genera and suprageneric taxa of Euphorbiaceae. Annals of the Missouri Botanical Garden 81:33-144.

Webster, G.L. 1956. Studies of the Euphorbiaceae, Phyllanthoideae II. The American species of Phyllanthus described by Linnaeus J. Arnold Arbor. 37:1-14.

Webster, G.L. 1970. A revision of Phyllanthus (Euphorbiaceae) in the continental United States Brittonia 22:44-76.

Webster, G.L. 1994a. Classification of the Euphorbiaceae Ann. Missouri Bot. Gard. 81:3-32.

Webster, G.L. and K.I. Miller. 1963. The genus Reverchonia Rhodora 65:193-207.

Webster, R. D. 1988. Genera of the North American Paniceae (Poaceae: Panicoideae). Systematic Botany 13(4):576-609.

Webster, R. D. 1993. Nomenclature of Setaria (Poaceae: Paniceae). Sida 15:447-489.

Webster, R. D. 1995. Nomenclatural changes in Setariaand Paspalidium (Poaceae: Paniceae). Sida 16(3):439-446.

Webster, R. D. and R. B. Shaw. 1982. Relationship between Digitaria milanjiana (Poaceae: Paniceae) and the annual species of Digitaria section Digitaria in North America. Sida 9:333-343.

Webster, R. D. and R. B. Shaw. 1995. Taxonomy of the native North American species of Saccharum (Poaceae: Andropogoneae). Sida 16(3):551-580.

Webster, R. D. and S. L. Hatch. 1990. Taxonomy of Digitaria section Aequiglumae (Poaceae: Paniceae). Sida 14(2):145-167.

Webster, R. D., J. H. Kirkbride, and J. V. Reyna. 1989. New world genera of the Paniceae (Poaceae: Panicoideae). Sida 13(4):393-417.

Webster, R.D. 1987. Taxonomy of Digitaria section Digitaria in North America (Poaceae: Paniceae) Sida 12:209-222.

Webster, R.D. 1992. Character significance and generic similarities in the Paniceae (Poaceae: Panicoideae) Sida 15:185-213.

Wehner, TC; Shetty, NV; Wilson, LG 2000. Screening the cucumber germplasm collection for fruit storage ability HortScience, 35 (4) pp. 699-707, 2000

Welch, W. C. 1989. Perennial Garden Color for Texas and the South. Taylor Publishing Company, Dallas.

Wells, E. F. 1984. A revision of the genus Heuchera (Saxifragaceae) in eastern North America. Systematic Botany Monograph 3:45-121.

Wells, J.R. 1965. A taxonomic study of Polymnia (Compositae) Brittonia 17:144-159.

Welsh, S. L., N. D. Atwood, S. Goodrich, and L. C. Higgins. 1987. A Utah Flora. Great Basin Naturalist, Memoirs. No. 9.

Welzen, P. C. 1981. A taxonomic revision of the genus Arthraxon Beauv. (Graminieae). Blumea 27:255-300.

Welzen, P.C. VAN. 1997. Paraphyletic groups or what should a classification entail Taxon 46:99-103.

Welzen, P.C. VAN. 1998. Phylogenetic versus Linnaean taxonomy, the continuing story Taxon 47:413-423.

Wemple, D. K. 1970. Revision of the genus Petalostemon. Iowa State College Journal of Science 45:1-102.

Wemple, D.K. and N.R. Lersten. 1966. An interpretation of the flower of Petalostemum (Leguminosae) Brittonia 18:117-126.

Wen, J. and T.F. Stuessy. 1993. The phylogeny and biogeography of Nyssa (Cornaceae) Syst. Bot. 18:68-79.

Wendel, J.F. and V.A. Albert. 1992. Phylogenetics of the cotton genus (Gossypium): Character-state weighted parsimony analysis of chloroplast-DNA restriction site data and its systematic and biogeographic implications Syst. Bot. 17:115-143.

Wendt, T. 1978. A systematic study of Polygala sect. Rhinotropis (Polygalaceae). Ph.D. Disseration. University of Texas, Austin.

Wendt, T. 1979. Notes on the genus Polygala in the United States and México. Journal of the Arnold Arboretum 60(4):504-514.

Wendt, T. 1980. Notes on some Pleopeltis and Polypodium species of the Chihuahuan Desert Region. American Fern Journal 70:5-11.

Wendt, T. 1993. A new variety of Ephedra torreyana (Ephedraceae) from West Texas and Chihuahua, with notes on hybridization in the E. torreyana complex. Phytologia 74(2):141-150.

Wendt, T. and T. K. Todsen. 1982. A new variety of Polygala rimulicola (Polygalaceae) from Doña Ana County, New Mexico. Madroño 29(1):19-21.

Weniger, D. 1970. Cacti of the southwest Univ. of Texas Press, Austin.

Weniger, D. 1984. Cacti of Texas and Neighboring States, A Field Guide. University of Texas Press, Austin.

Weniger, D. 1996. Catalpa (Catalpa bignonioides, Bignoniaceae) and bois d'arc (Maclura pomifera, Moraceae) in early Texas records Sida 17:231-242.

Werner, D. and W. L. Wagner. 1988. Systematics of Oenothera section Oenothera subsection Raimannia and subsection Nutantigemma (Onagraceae). Systematic Botany Monograph 24:1-91.

Werner, G., R.K. Brummitt, E. Farr, N. Kilian, P.M. Kirk, and P.C. Silva. 1993. Names in current use for extant plant genera Regnum Veg. Vol. 129.

Westbrooks, R.G. and J.W. Preacher. 1986. Poisonous plants of eastern North America Univ. of South Carolina Press, Columbia.

Wetherwax, M. 1993. Linaria. In: J.C.Hickman, ed;The Jepson manual: Higher plants of California Pp. 1036-1037. Univ. of Californ

Whalen, M. 1977. Taxonomy of Bebbia (Compositae: Heliantheae). Madroño 24:112-113.

Whalen, M. 1980. A systematic revision of the New World species of Frankenia (Frankeniaceae). Ph.D. Disseration. University of Texas, Austin.

Whalen, M. A. 1976. New taxa of Solanum, section Androceras from México and adjacent United States. Wrightia 5:228-239.

Whalen, M. A. 1979. Taxonomy of Solanum section Androceras. Gentes Herbarium 11:359-426.

Whalen, M. A. 1987. Systematics of Frankenia (Frankeniaceae) in North and South America. Systematic Botany Monograph 16:1-93.

Whalen, M.D. 1979. Taxonomy of Solanum section Androceras. Gentes Herb. 11:359-426.

Wheeler, EA; Lehman, TM 2000. Late Cretaceous woody dicots from the Aguja and Javelina Formations, Big Bend National Park, Texas, USA IAWA Journal, 21 (1) pp. 83-120, 2000

Wheeler, L.C. 1936. Revision of the Euphorbia polycarpa group of the southwestern United States and adjacent Mexico; a preliminary treatment Bull. Torrey Bot. Club 63:397-416.

Wheeler, L.C. 1941. Euphorbia subgenus Chamaesyce in Canada and the United States exclusive of southern Florida Rhodora 43:97-154, 168-205, 223-286.

Wheeler, L.C. 1943. The genera of living Euphorbiaceae Amer. Midl. Naturalist 30:456-503.

Wherry, E.T. 1955. The genus Phlox Morris Arbor., Monogr. 3, Philadelphia, PA.

Wherry, E.T. 1966. Polemoniaceae. In: C.L. Lundell, ed;Flora of Texas 1:283-321 Texas Research Foundation, Renner.

Whetstone, R.D. 1983. The Sterculiaceae in the flora of the southeastern United States Sida 10:15-23.

Whetstone, R.D. and T.A. Atkinson. 1993. Osmundaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 2:107-109 Oxford Univ. Press, New York and Oxford.

Whetstone, R.D., T.A. Atkinson, and D.D. Spaulding. 1997a. Berberidaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:272-273 Oxford Univ. Press, New York and Oxford.

Whetstone, R.D., T.A. Atkinson, and D.D. Spaulding. 1997b. Nandina. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:273-274 Oxford Univ. Press, New York and Oxford.

Whistler, R. L. and T. Hymowitz. 1979. Guar: Agronomy, Production, Industrial Use, and Nutrition. Purdue University Press, West Lafayette, IN.

Whitaker, T.W. and W.P. Bemis. 1964. Evolution in the genus Cucurbita Evolution 18:553-559.

Whitaker, T.W. and W.P. Bemis. 1975. VIII. Origin and evolution of the cultivated Cucurbita Bull. Torrey Bot. Club 102:362-368.

White, H.L., W.C. Holmes, and J.R. Singhurst. 1998. Comments on the distribution of Sedum pulchellum (Crassulaceae) in Texas Sida 18 (In Press).

Whitehead, F.H. and R.P. Sinha. 1967. Taxonomy and taximetrics of Stellaria media (L.) Vill., S. neglecta Weihe and S. pallida Dumont.) Piré New Phytol. 66:769-784.

Whitehouse, E. 1933. Plant succession on Central Texas granite. Ecology XIV (4):391-405.

Whitehouse, E. 1935. Notes on Texas phloxes Bull. Torrey Bot. Club 62:381-386.

Whitehouse, E. 1936. Texas flowers in natural colors Published by the author, Dallas, TX.

Whitehouse, E. 1939. A study of the annual Phlox species Ph.D. dissertation, Univ. of Texas, Austin.

Whitehouse, E. 1945. Annual Phlox species Amer. Midl. Naturalist 34:388-401.

Whitehouse, E. 1949. Revision of Salvia L., section Salviastrum Gray Field & Lab. 17:151-165.

Whitehouse, E. and F. McAllister. 1954. The mosses of Texas A catalogue with annotations, Bryologist 57:63-146.

Whittemore, A.T. 1997a. Ranunculus. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:88-135 Oxford Univ. Press, New York and Oxford.

Whittemore, A.T. 1997b. Myosurus. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:135-138 Oxford Univ. Press, New York and Oxford.

Whittemore, A.T. 1997c. Aquilegia. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:249-258 Oxford Univ. Press, New York and Oxford.

Whittemore, A.T. 1997d. Berberis. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:276-286 Oxford Univ. Press, New York and Oxford.

Whittemore, A.T. and B.D. Parfitt. 1997. Ranunculaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:85-87 Oxford Univ. Press, New York and Oxford.

Whittemore, A.T. and D.E. Stone. 1997. Juglans. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:425-428 Oxford Univ. Press, New York and Oxford.

Widrlechner, M.P. 1983. Historical and phenological observations on the spread of Chaenorrhinum minus across North America Canad. J. Bot. 61:179-187.

Wiegand, K.M. 1900. Juncus tenuis Willd. and some of its North American allies Bull. Torrey Bot. Club. 27:511-527.

Wiegand, K.M. 1912. Amelanchier in eastern North America Rhdora 14:117-161.

Wiegand, K.M. 1925. Oxalis corniculata and its relatives in North America Rhodora 27:113-124, 133-139.

Wiegrefe, S.J., K.J. Sytsma, and R.P. Guries. 1994. Phylogeny of elms (Ulmus, Ulmaceae): Molecular evidence for a sectional classification Syst. Bot. 19:590-612.

Wiens, D. 1964. Revision of the Acataphyllous species of Phoradendron. Brittonia 16:11-54.

Wiersema, J.H. 1987. A monograph of Nymphaea subgenus Hydrocallis (Nymphaeaceae) Syst. Bot. Monogr. 16:1-112.

Wiersema, J.H. 1988. Reproductive biology of Nymphaea (c) Ann. Missouri Bot. Gard. 75:795-804.

Wiersema, J.H. 1997a. Nelumbonaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:64-65 Oxford Univ. Press, New York and Oxford.

Wiersema, J.H. 1997b. Nymphaea. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:71-77 Oxford Univ. Press, New York and Oxford.

Wiersema, J.H. 1997c. Cabombaceae. In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:78-80 Oxford Univ. Press, New York and Oxford.

Wiersema, J.H. and C.B. Hellquist. 1994. Nomenclatural notes in Nymphaeaceae for the North American Flora Rhodora 96:170-178.

Wiersema, J.H. and C.B. Hellquist. 1997. Nymphaeaceae In: Flora of North America Editorial Committee, eds, Fl. North Amer. 3:66-77, Oxford Univ. Press, New York and Oxford.

Wight, W.F. 1915. Native American species of Prunus U.S.D.A. Bull. 179:1-75.

Wijnands, D.O., J.J. Bos, H.J.W. Wijsman, F. Schneider, C.D. Brickell, and K. Zimmer. 1986. Proposal to conserve 7436 Petunia with P. nyctaginiflora as typ. cons. (Solanaceae) Taxon 35:748-749.

Wijsman, H.J.W. 1990. On the inter-relationships of certain species of Petunia VI New names for the species of Calibrachoa formerly included into Petunia (Solanaceae), Acta Bot. Neerl. 39:101-102.

Wijsman, H.J.W. and J.H. De Jong. 1985. On the interrelationships of certain species of Petunia IV Hybridization between P. linearis and P. calycina and nomenclatorial consequences in the Petunia group, Acta Bot. Neerl. 34:337-349.

Wilbur, R. L. 1955. A revision of the North American genus Sabatia (Gentianaceae). Rhodora 57:1-36; 43-72; 78-104.

Wilbur, R. L. 1969. Cistaceae. Flora of Texas, Vol. 2, part I. Texas Research Foundation. Renner, TX.

Wilbur, R. L. 1975. A revision of the North American genus Amorpha (Leguminosae-Psoraleae). Rhodora 77:337-409.

Wilbur, R. L. 1976. Illegitimate names: Rhododendron nudiflorum (L.) Torr. and R. roseum (Loisel.) Rehder. Taxon 25:178-179.

Wilbur, R. L. 1994. The Myricaceae of the United States and Canada: genera, subgenera, and series. Sida 16(1):93-107.

Wilbur, R.L. 1966. Notes on Rafinesque's species of Lechea (Cistaceae) Rhodora 68:192-208.

Wilbur, R.L. 1970. Taxonomic and nomenclatural observations on the eastern North American genus Asimina (Annonaceae) J. Elisha Mitchell Sci. Soc. 86:88-96.

Wilbur, R.L. and H.S. Daoud. 1961. The genus Lechea (Cistaceae) in the southeastern United States Rhodora 63:103-118.

Wilbur, R.L. and H.S. Daoud. 1964. The genus Helianthemum (Cistaceae) in the southeastern United States J. Elisha Mitchell Sci. Soc. 80:38-43.

Wilken, D.H. 1986a. Polemoniaceae. In: Great Plains Flora Association Flora of the Great Plains Pp. 666-677, Univ. Press of Kansas, Lawrence.

Wilken, D.H. 1986b. Hydrophyllaceae. In: Great Plains Flora Association Flora of the Great Plains Pp. 678-683, Univ. Press of Kansas, Lawrence.

Wilken, D.H. 1993a. Chenopodiaceae. In: J.C.Hickman, ed;The Jepson manual: Higher plants of California Pp. 500-515. Univ. of California

Wilken, D.H. 1993b. Verbenaceae. In: J.C.Hickman, ed;The Jepson manual: Higher plants of California Pp. 1085-1089. Univ. of Californ

Wilken, D.H., R.R. Halse, and R.W. Patterson. 1993. Phacelia. In: J.C.Hickman, ed;The Jepson manual: Higher plants of California Pp. 691-706 Univ. of California Press, Berkeley.

Willdenow, C. L. 1805. Species plantarum. Vol 4. G. C. Nauk, Berlin, Germany.

Williams, J. G. and A. E. Williams. 1983. Field Guide to Orchids of North America. Universe Books, New York.

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