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Cheadle, v. I. (Cont.) 



1942a. The occurrence and types of vessels in the various organs of the plant in the 

 Monocotyledoneae. Amer. Journ. Bot., 29:441-450. 



1942b. The role of anatomy in phylogenetic studies of the Monocotyledoneae. Chron. 

 Bot, 7:253-254. 



1943a. The origin and certain trends of specialization of the vessel in the Monocotyle- 

 doneae. Amer. Journ. Bot., 30:11-17. 



1943b. Vessel specialization in the late metaxylem of the various organs in the Mono- 

 cotyledoneae. Amer. Journ. Bot., 30:484-490. 



1944. Specialization of vessels within the xylem of each organ in the Monocotyle- 

 doneae. Amer. Journ. Bot., 31:81-92. 



1948. Observations on the phloem in the Monocotyledoneae. II. Additional data on 

 the occurrence and phylogenetic specialization in structure of the sieve tubes 

 in the metaphloem. Amer. Journ. Bot., 35:129-131. 



Cheadle, V. I., and Natalie W. Uhl 



1948. Types of vascular bundles in the Monocotyledoneae and their relation to the 

 late metaxylem conducting elements. Amer. Journ. Bot., 35:486-496. 



Cheadle, V. I., and Natalie B. Whitford 



1941. A discussion of some factors which influence the form of the vascular bundle 



in the Monocotyledoneae. Amer. Journ. Bot., 28:2s. (Abs.) 



Chester, K. S. 



1937. A critique of plant serology. Quart. Rev. Biol., 12:19-46, 165-190, 294-321. 



Chorinsky, F. 



1931. Vergleichend-anatomische Untersuchung der Haargebilde bei Portucacaceen 

 und Cactaceen. Oesterr. Bot. Zeitschr., 80:308-327. 



Chou, Y.-L. 



1952. Floral morphology of three species of Gaultheria. Bot. Gaz., 114:198-221. 



Chute, Hettie M. 



1930. The morphology and anatomy of the achene. Amer. Journ. Bot., 17:703-723. 



Clausen, J. 



1951. Stages in the Evolution of Plant Species, viii + 206 pp. Ithaca: Cornell Univ. 

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Clausen, P. 



1927. Ueber des Verhalten das Antheren-Tapetums bei einigen Monokotylen und 

 Ranales. Bot. Archiv, 18:1-27. 



COCKERELL, T. D. A. 



1935. The origin of the higher flowering plants. Science, 81:458-459. 



Constance, L. 



1951. The versatile taxonomist. Brittonia, 7:225-231. 



1953. The role of plant ecology in biosystematics. Ecology, 34:642-649. 



CONZATTI, C. 



1942. El origen probable de las monocotiledoneas. Proc. 8th Amer. Sci. Congr., 3:197. 



COPELAND, H. F. 



1935a. The structure of the flower of Pholisma arenarium. Amer. Journ. Bot., 22:366- 

 383. 



1935b. On the genus Pityoims. Madrono, 3:154-168. 



1937. The reproductive structures of Pleuriscospora. Madroiio, 4:1-16. 



