INDEX TO AMERICAN BOTANICAL LITERATURE 237 
Chambers, W. H. Studies in the physiology of the fungi.—XI. 
Bacterial inhibition by metabolic products. Ann. Missouri Bot. 
Gard. 7: 249-289. f. 1-11. N 1920. 
Chancerel, L. Flore forestiere du globe. Pp. 1-738. Paris. 1920. 
Chase, A. The Linnaean concept of pearl millet. Am. Jour. Bot. 8: 
41-49. 9 Mr 1921. 
Chase, A. The North American species of Pennisetum. Contrib. 
U. S. Nat. Herb. 22: 209-234. f. 63- Hs 1921. 
Includes P. prolificum, sp. nov., from Mexi 
Chodat, R. Sur un nouveau aula le Cneorum trimerum (Urb.) 
Chod. Bull. Soc. Bot. Genéve II. 12: 23, 24. 31 Ja 1921. 
Based upon Cubincola trimera Urb., of Cuba. 
Christensen, C., & Skottsberg, C. The ferns of Easter Island. Nat. 
Hist. Juan Fernandez & Easter Isl. 2: 47-53. f. I-3. 1920. 
Includes Doodia paschalis, sp. nov. 
Christensen, C., & Skottsberg, C. The Pteridophyta of the Juan 
Fernandez Islands. Nat. Hist. Juan Fernandez & Easter Isl. 2: 
1-46, pl. 1-5. +f. 1-7. 1920. 
Includes new species in Trichomanes (1), Hymenophyllum (1), and Ophioglos- 
sum (1). 
Church, A. H. The somatic organization of the Phaeophyceae. 
Mem. Oxford 10: I-I10. 
Clements, F.E. Adaptation and mutation asa result of fire. Carnegie 
Inst. Washington Year Book 19: 348, 349. 3 F 1921. 
Clements, F. E. Biotic succession in Bad Lands. Carnegie Inst. 
Washington Year Book 19: 362, 363. 3 F 1921. 
Climax formations. Carnegie Inst. Washington 
Bot. 
Clements, F. E. 
Year Book 19: 350. 3 F 1921. 
Clements, F. E. Indicator plants. 
Book 19: 363, 364. 3 F 1921. 
Clements, F. E. & E. S. Changes in vegetation. Carnegie Inst. 
Washington Year Book 19: 351-353. 3 F 1921. 
Clements, F. E., E. S., & Loftfield, G. V. Periodicity of vegetation. 
Carnegie Inst. Washington Year Book 19: 354, 355- 3 F 1921. 
Clements, F. E., E. S., & Loftfield, G. V. Permanent quadrats. 
Carnegie Inst. Washington Year Book 19: 359, 360. 3 F 192t. 
Clements, F. E., & Douglass, A. E. Climatic cycles. Carnegie Inst. 
Washington Year Book 19: 358, 359-3 F 1921. 
Study of Sequoia 
Carnegie Inst. Washington Year 
