CONTRIBUTIONS, NATIONAL HERBARIUM 31 



Volume 10 



Systematic investigations in phanerogams, ferns, and diatoms. Pp. i-xii (title, 

 advertisement, title page, note, preface, contents, and illustrations) ; pp. 1-508 

 (parts 1-7) ; pp. 509-53S (index) ; 6 figs., 56 pis. 1906-1908. 



Part 



1. North American species of Festuca. By Charles V. Piper. Pp. 1-48, IS pis. 



Mar. 30, 1906. 



2. The genus Ptelea in the vpestern and southwestern United States and Mexico. 



By Edward L. Greene. Pp. 49-78. July 16, 1906. 



3. Studies of Mexican and Central American plants — No. 5. By J. N. Rose. Pp. 



79-132, 6 figs., 28 pis. Dec. 5, 1906. 



4. The Leguminosae of Porto Rico. By J. Perkins. Pp. 133-220, June 10, 1907. 



5. Report on the diatoms of the Albatross voyages in the Pacific Ocean, 1888-1904. 



By Albert Mann. (Assisted in the bibliography and citations by P. L. Ricker.) 

 Pp. 221-442, 11 pis. July 11, 1907. 



6. The Cyperaceae of Costa Rica. By C. B. Clarke. Pp. 443-472. Jan. 21, 1908. 



7. Studies of tropical American ferns — No. 1. By William R. Maxon. Pp. 473-508, 



2 pis. Mar. 30, 1908. 



Volume 11 



Flora of the State of Washington. By Charles V. Piper. Pp. 1-637, 22 pis., 1 map. 

 Oct. 8, 1906. 



Volume 12 



Systematic investigations and bibliography. Pp. i-xvi (title, advertisement, title 

 page, note, preface, contents, and illustrations; pp. 1-455 (parts 1-10); pp. 457- 

 474 (index) ; 67 figs., 85 pis. 1908-1909. 



Part 



1. Catalogue of the botanical library of John Donnell Smith, presented in 1905 



to the Smithsonian Institution. Compiled by Alice Cary Atwood. Pp. 1-94. 

 Apr. 23, 1908. 



2. The Lecythidaceae of Costa Rica. By H. Pittier de Fabrega. Pp. 95-101, 4 



figs., 8 pis. May 20, 1908. 

 Tonduzia, a new genus of Apocynaceae from Central America. By H. Pittier 



de Fabrega. Pp. 103-104, 2 figs., 1 pi. May 20, 1908. 

 A collection of plants from the vicinity of La Guaira, Venezuela. By J. R. 



Johnston. Pp. 105-111. May 20, 1908. 



3. Types of American grasses: A study of the American species of grasses de- 



scribed by Linnaeus, Gronovius, Sloane, Swartz, and Michaux. By A. S. 

 Hitchcock. Pp. 113-158. June 18, 1908. 



4. The Mexican and Central American species of Sapinm. By Henry Pittier. Pp. 



159-169, 4 figs., 8 pis. Oct. 6, 1908. 



5. New or noteworthy plants from Colombia and Central America. By Henry 



Pittier, Pp. 171-181, 9 figs., 2 pis. Jan. 27, 1909. 



6. Catalogue of the grasses of Cuba. By A. S. Hitchcock. Pp. 183-258. Mar. 



23, 1909. 



7. Studies of Mexican and Central American plants — No. 6. By J. N. Rose. 



Pp. 259-302, 29 figs., 7 pis. Apr. 12, 1909. 



8. The Allioniaceae of the United States, with notes on Mexican species. Bv 



Paul C. Standley. Pp. 303-389, 19 figs., 16 pis. Apr. 23, 1909. 



9. Thompsonella, a new genus of Crassulaceae from Mexico. By N. L. Britton 



and J. N. Rose. Pp. 391-392, 2 pis. May 10, 1909. 

 Rediscovery of Echeveria carnicolor. By J. N. Rose. P. 393, 1 pi. May 10, 1909. 

 Three new species of Crassulaceae from Guatemala. By J. N. Rose. Pp. 395-396, 



2 pis. May 10, 1909. 

 Rediscovery of Cereus nudiflorus. By J. N. Rose. Pp. 397-398, 3 pis. May 



10, 1909. 

 A species of Pereskia from Guatemala. By J. N, Rose. P. 399, 3 pis. May 



10, 1909. 



