Index to Recent Literature 661 



Nathansohn, A. Physiologische Untersuchungen ueber amitotische 

 Kerntheilung. Jahrb. wiss. Bot. 35: 48-79.//. 2> 3. 1900. 



Nelson, A. Popular Ignorance concerning Botany and Botanists. 

 Plant World, 3 : 33-36. Mr. 1900. 



Nelson, A- The Cyptogams of Wyoming. Ann. Rep. Wyo. Exp* 

 Sta. 10: (3-38). 1900. 



Nordhausen, M. Ueber basale Zweigvervvachsungen bei Cladophora 

 und iiber die Verzweigungswinkel einiger monosiphoner Algen. 

 Jahrb. wiss. Bot. 35: 366-406.//. II. 1900. 



Osterhout, G. E. New Plants for Colorado. Bull. Torr. Club, 27 : 

 506-508. 29 S. 1900. 



Allium rubrum, Allium arenicola, Artemisia Colorademis, Artemisia spiciformis, 

 Artemisia cana viscidula and Agoseris montana new species and variety. 



Osterhout, G. E. A Correction. Bull. Torr. Club, 27 : 539. 26 

 O. 1900. 



Allium sabulicola substituted for A. arenicola. 



Pamxnel, L. H. The Twin-leaf {Jeffersonia diphylla) in Iowa. 



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Plant World, 3: 41. Mr. 1900. 



Parish, S. B. Contributions to Southern California Botany. — L Zoe, 

 5 : 71-76. N. 1900. 



New species in Gilia, Eupatorium and Bidens. 



Pollard, C. L. A new Southern Violet. Proc. Biol. Soc. Washing- 

 ton, 13: 169. 31 O. 1900. 



V. Alabamensis. 



Pollard, C. L. A Visit to the Home of 

 3 : 136, 137. S. 1900. 



Porter, T. C. A new Variety of Azalea nudiflora L. Bull. Torr. 

 Club, 27: 508. 29 S. 1900. 



Azalea nudiflora glandifera var. no v. 



Porter, T. C. The Twin-flower (Zi/waea borealis') in Pennsylvania. 

 Plant World, 3: 133, 134. S. 1900. 



Preston, C. E. Non-sexual Propagation in Opuntia. Bot. Gaz. 30 : 



35 1 - *5 N - I 9°°- 

 Preston, C. E. Observations on the Root System of certain Cacta- 

 ceae. Bot. Gaz. 30: 348-351. 15 N. 1900. 



Price, S. F. Abnormal Leaves and Flowers. Plant World, 3: 53. 

 f. 1. Ap. 1900. 



Ramaley, F. The Seed and Seedling of the Western Larkspur 

 (^Delphinium occidentale Wats.). Minn. Bot. Stud. 2: 417-421. 

 //. 28. 15 Au. 1900. 



Neviusia. Plant World. 



