COLORADO BOTANY 57 



Cockerell, T. D. A., "Colorado Fungi," Science Gossip, April, 1889, p. 92. 



, "Some Fungi of Custer Co., Colorado," Journal of Mycology, June, 1889, pp. 



84, 85. 



, "Artemisia vulgaris in Colorado," Science Gossip, August, 1889, pp. 188, 189. 



, "The Classification of Slight Varieties," Bull. Ton. Bot. Club, October, 1889, pp. 



270-72. 



, "Lupimis parviflorus var. sericea," West Amer. Scientist, April, 1889, p. 



19. 



, "Notes on Castilleia," Bull. Torr. Bot. Club, February, 1890, pp. 34-37. [Six 



are from Custer County, Colo.] 



, "Contributions towards a List of the Fauna and Flora of Wet Mountain Valley, 



Colorado. III. Monocotyledonous Plants," West Amer. Scientist, October, 1889, 

 pp. 134-36. 



, "Contributions towards a List of Fauna and Flora of Wet Mountain Valley, 



Colorado; III. Algae; IV. Pteridophyta; V. Gymnospermae," West Amer. Scientist, 

 November, 1889, pp. 153-55. 



, "An Observation of Troximon glaucum," Field and Farm, April, 5, 1890, p. 9. 



, "Weeds," Science Gossip, May, 1890, pp. 98-100. [With observations in Custer, 



Fremont and Pueblo counties.] 



, "The Effect of Altitude on Plants," Nature Notes, January 15, 1891, pp. 13-15. 



[Two new forms from Colorado.] 



, "Alpine Rubi," Nature, February 4, 1892, p. 320. [Observations in Colo- 

 rado.] 



, "Additions to the Flora of Colorado — Fungi," Zoe, Vol. IV, pp. 282-85, October, 



1893. 



, "De Vriesian Species," Nature, Vol. LXVI, p. 174, 1902. [Description of a new 



variety collected in Boulder, Colo.] 



, "The Colorado Rubber Plant," Bull. I, Colorado College Museum, December 



11, 1903. 2 pp. 



, "The North American Species of Hymenoxys," Bull. Torr. Bot. Club, pp. 461-509, 



1904. Plates 20-23. [One plate illustrates the Colorado rubber plant.] 



, "Mutations and Forms," Torreya, April, 1904, pp. 58, 59. [With altered nomen- 

 clature of some Colorado plants.] 



, "The Evolution of the Colorado Spiderwort," Nature, p. 7, November 1, 1906. 



, "The Alpine Flora of Colorado," American Naturalist, pp. 861-73, 1906. [Gives 



lists of plants at various altitudes.] 



, "A New Mertensia from Colorado," Muhlenbergia, p. 68, June 8, 1907. 



, "Note on a Tradescantia," Muhlenbergia, p. 54, March, 1907. 



, "An Instance of Mutation," Bot. Gazette, Vol. XLIII, pp. 283, 284, 1907. 



, "The Genus Crataegus in Colorado," TJniv. of Colo. Studies, Vol. V, pp. 41-45, 



1907. [A summary of knowledge of the genus Crataegus in the state with sugges- 

 tions as to nomenclature, etc. Tabulation of all original descriptions.] 



Cockerell, T. D. A. and W. P., "The Colorado Rubber Plant," Frontier, pp. 315, 

 316, April, 1904. 



Cockerell, W. P., "Note on a Rubber Producing Plant," Science, Vol. XIX, pp. 314, 315, 

 1904. 



