Index to Recent Literature 597 



Rydberg, P, A. Studies on the Rocky Mountain Flora. — VI. Bull. 

 Torr. Club, 28: 499-511. 30 S. 1901. 



New species in Trifolium, Vina, Primula, Cuscuta (2), Monarda, Castilleja, 

 Pentstemon, Sambiuus, Chrysothammts (2),- Aster, Machaeranthera, EHgercn $ Car- 

 duns (6), Agoseria (2), Taraxacum, Crepis, and Hieracium. 



Rydberg, P. A. What is Primus insititia ? Bull. Torr. Club, 27 : 

 J 95? l 9&- 2I Ap. 1900. 



Sargant, E. Recent Work on the Results of Fertilization in Angio- 

 sperms. Ann. Bot. 14: 689-712. D. 1900. 



Schneider, A. The probable Function of Calcium oxalate Crystals in 

 Plants. Bot. Gaz. 32: 142-144. 20 Au. 1901. 



Small, J. K. Dasystoma flava and some related Species. Bull. Torr. 

 Club, 28: 451-453. 27 Au. 1901. 



Includes three new species and names. 



Smith, F. G. A peculiar Case of Contact Irritability. Bull. Torr. 

 Club, 27 : 190-194. 21 Ap. 1900. [Illust.] 



Smith, J. D. Undescribed Plants from Guatemala and other Central 

 American Republics. Bot. Gaz. 31 : 109-125. //. /. 23 F. 1901. 



Smith, M. H. Nitrates as a Source of Nitrogen for saprophytic Fungi. 

 Bot. Gaz. 31 : 126. 23 F. 1901. 



Smith, R. W. The achromatic Spindle in the Spore Mother Cells of 

 Osmunda regalis. Bot. Gaz. 30 : 361-377- P l - **• 2 ° D - I 9°°- 



Spegazzini, C. Contribucion al estudio de la Flora del Tandil, 1-60. 

 8vo. La Plata and Buenos Ayres. 15 Ap. iqoi. 



Contains descriptions of new species in Portuhua, Mimosa, Opuntia, Vernonia, 

 Baccharis, Perezia, and Verbena. 



Spegazzini, C. Nova Addenda ad Floram Patagonicam. An. Soc. 

 Cient. Arg. 47: 161-177; 224-239; 274-290; 48: 44~59 > l 1*~ 

 190; 238-242; 329-332. 1899. 



Contains descriptions of new species in Ranunculus, Draba, Si ymbrium, Braya, 

 Calandrinia, Sida, Oxalis, Adesmia, Vicia, Hoffmanseggia, Acaena^ Oenothera, Petro- 

 cactus, Tetragonia, Azorella, Mulinum, Boopis, Haplopappus, and Baccharis. 



Spegazzini, C. Stipeae Platenses. An. Mus. Nac. Montevideo 4" : 



i.-xviii.; 1-56. 1901. [Illust.] 



Includes new species and new names in O yzopsis and Stipa. 



Steele, E. S. Sixth List of Additions to the Flora of Washington, 

 D. C, and Vicinity. Proc. Biol. Soc. Wash. 14 : 47-86- iaJe-ioo 1 - 



Includes a new species of Viola by Greene and a Lvcopus by Steele. 



