174 Botany. 



Pittier (HENRI DE FABREGA). 



117 plants from Costa Kica, purchased 1898. 



Pittoni (GIUSEPPE C. DE). 



132 plants from South Europe, presented 1869. 



Plant (R. W.). 



100 South African plants, purchased 1853-57. 



Plowright (CHARLES BAGGE). [1849- ] 



" Sphaeriacei Britannici," 3 centuries of Fungi (1873-78), purchased. 

 Also 86 British Fungi, presented at various times, 1884-99. 



Plukenet (LEONARD). [1642-1706] 



A folio volume, "Herbarium vivum" of cultivated plants. His 

 principal collections are incorporated in the Sloane Herbarium. 



Pocock (ROBERT). [1760-1830] 



Herbarium of British plants, presented by his biographer, Mr. 

 G. M. Arnold, 1884. 



Poeppig (EDUARD FRIEDRICH). [1798-1868] 



South American plants acquired with Herb. Shuttleworth ; crypto- 

 gams with the collections of Hampe and Stephani. 



Pohl (JOHANN EMMANUEL). [1782-1834] 



Brazilian plants, some acquired with Brown's herbarium. 



Polakowsky (HELLMUTH). 



A set of his "Flora Costaricensis," purchased 1875. 



Poore (DYKE, Miss}. 



117 marine algae from Jersey ; purchased at various times, 1862-85. 



Porta (PIETRO) [1852- ] and GREGORIO Rigo. [1841- ] 

 1,611 Spanish and Balearic plants, purchased 1880-92. 



Post (GEORGE EDWARD). 



1,655 Syrian plants, acquired 1878-1902. 



Powell (THOMAS), [d. 1887] 



154 Ferns and other cryptogams from Samoa, presented 1899. 

 Praeger (ROBERT LLOYD). [1865- ] 



480 British plants, purchased 1894. 



Prain (DAVID). [1857- ] 



1,403 plants from the Calcutta Herbarium, acquired by exchange 

 1899-1902. 



Pratt (ANTWERP E.). 



771 plants from Szechuen and the Tibetan frontier, purchased 1891. 



Prescott (JOHN D.). [d. 1837] 



757 plants, mostly Russian, purchased 1861. 



