CONTENTS OF VOLUME II. 

 Plates I-XXXII. 



PAGE 



Title-page i 



Contents iii 



No. I. Nitophylla of California. Description and distribution. ByChas. 



Palmer Nott. (Plates I-IX) i 



(Published Augusts, 1900.) 



No. 2. The Development of the Karyokinetic Spindle in the Pollen- 

 Mother - Cells of Lavatera. By Edith Sumner Byxbee. 

 (Plates X-XIII) 63 



(Published October 31, 1900.) 



No. 3. Studies on the Coast Redwood, Sequoia sempervirens Endl. 



By George James Peirce. (Plate XIV) 83 



(Published April 4, 1901.) 



No. 4. A Revision of the Genus Calochortus. By Carl Purdy. (Plates 



XV-XIX) 107 



(Published December 14, 1901.) 



No. 5. A Group of Western American Solanums. By S. B. Parish.. . 159 



(Published October 23, 1901.) 



No. 6. An Account of the Species of Porphyra Found on the Pacific 

 Coast of North America. By Henri T. A. Hus. (Plates 

 XX-XXII) 173 



(Published January 4, 1902.) 



No. 7. Some new Species of Pacific Coast Ribes. By Alice Eastwood. 



(Plates XXIII-XXIV) 241 



(Published April li 1902.) 



No. 8. Cell Studies. I. Spindle Formation in Agave. By W. J. V. 



Osterhout. (Plates XXV-XXVIII) 255 



(Published May 5, 1902.) 



No. 9. New Species from the Sierra Nevada Mountains of California. 



By Alice Eastwood 285 



(Published June 3, 1902.) 



No. 10. The Root - tubercles of Bur Clover (Medicago denticulata 

 Willd.) and of some other Leguminous Plants. By George 

 James Peirce. (Plate XXIX) 295 



(Published June 21, 1902.) 



No. II. Spindle Formation in the Pollen-Mother-Cells of Cassia to- 



mentosaL. By Henri T. A. Hus. (Plates XXX-XXXI I) 329 



(Published April 30, 1904.) 



Index 355 



April 30, 1904. 



LIBRARY 



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