Dicotyledons. 



[Pterospermites j] [Sterculiaceae]. 

 Knowlton, F. H. Alaska (Harrimaa 

 Expedition), edited by C. Hart Merviam. 

 New York, 4, 1904, ([147]-iG2^). 



[Pterospermum] [Sterculiaceae]. Hocri- 

 UEUTiNER, B. P. (t. Plautae Bogoriensis 

 . . . Buitenzorg, 1904, (IX + 75). 



[Pueraria] [Leguminosae]. Perkins, 

 J. In : Pragmenta florae Pliilippinae. 

 Fasc. 1. 2. "Leipzig, 1904, (4-21, 80- 

 90J. 



. • Yabe,Y. Tokvo 



Bot. Mag., 18, 1904, (7-14). 



[Pulmonaria] [Boragineae]. Gain, E. 

 Biometrika, Cambridge, 3, 1904, (398- 



458). 



SciirR, A. 



Brunn, Verb. Natf Ver., 42, (1903), 

 1904, (202-253). 



■ SlMONKAI, L. 



Tn : Xovenvt. Kozlem., Budapest, 3, 

 1904, (100-115). 



[Pulsatilla] [Ranunculaceae]. Nord- 

 strom, K. B. Bot. Not., Liiiid, 1903, 



(48). 



[Putranjiva] [Enphorbiaceae]. Hayata, 

 B. Tokyo, J. Coll. Sci., 20, Art. 3, 

 1904, (1-92) (Latin). 



[Pycnostachys] [Labiatae]. Briquet, J. 

 Geneve, Bui. Boissier, (ser. 2), 3, 1903, 

 (998-1001). 



[Pycnothymus n. gen.] [Labiatae]. 

 Small, J. K. Flora of the southeastern 

 United States. New York, 1903, (xii + 

 1370). 



[Pyrola] [Ericaceae]. Bennett, A. 

 Norwich, Trans. Nat. See, 7, 1903, (512 - 

 513). 



V. Pirola. 



[Pyrrocoma] [Compositae]. Nelson, A. 

 Bot. Gaz., Chicago, 111., Univ. Chic, 37, 

 1904,(2(^0-279). 



[P3rrus] [Rosaceae]. Gard. Cliron., 

 London, (Ser. 3), 35, 1904, (312). 



Baltet, C. 



Gard. Chron., London, (Ser. 3), 35, 1904, 

 (299-300); London, J. R. Hort., Soc, 

 29. 1904,(135-138). 



Bois, D. Paris, 



Bui. soc. bot , 51, 1904, (113-117). 



Cooke, M. C. 



Gard. Chron., London, (Ser. 3), 36, 1904, 

 (249-251, figs. 101-105). 



550 5400 



[Pjrrus] [Rosaceae]. GoETnE, R. 

 Prakt. Ratgeber Obstbau, Frankfuit a. 

 0., 16, 1901, (93-96). 



IIemslf.\,W. B. 



Bot. Mag., London, (Ser. 3), 60, 1904, 



t. 7975. 



(ISTERWALDER, .\ . 



Centralbl. Bakt., Jena, Abt. 2, 13, 1904, 

 (207-213, 330 338). 



PiCKERINi;, S. \V. 



London, J. R. Agric. Soc. 64, 1903, (3G5- 



37G). 



YAr;i.:,Y. Tokvo 



Bot. Mag., 18, 1904 (7-14). 



[Quercus] [Cupuliferae]. Zentrbl. 

 Forstue.s., Wien, 30, 1904, (477 478). 



B.VTLRY, C. 



Manchester, Proc. F. CI., 1,(1890), 1903, 



1129-134). 



Bi.JAri, W. .1. 



Garden, London, 65, 1904, (320 32 L 

 353-354, 370-371, 385-386). 



Berry, E. W. 



New York, N.Y., Bull. Torrey Bot. CI., 

 31, 1904, (6-82). 



Brk'nnT'IR, W. 



Natw. Wochenschr., Jeaa, 19, 1901, 

 (519-522). 



C[..\YTON, J. 



Edinburgh, Trans. Bot. Soc, 22, 1901, 

 (396-414). 



• Davis, C. A. 



Rep. Mich. Acad. Sci., Lansing, 6, 1901, 

 (82-83). 



ITOI.LIOK, A. 



Maryland Geol. Surv., Miocene, Balti- 

 more, 1904, (483-486). 



• KOORDERS, S. 11. 



et Valeton, Til. Buitenzorg, Medcd. 

 Plant., 68, 1904, (12-65). 



Ku.MtnORFELI),. 



J. F. lleimat, Kiel, 14, 1904, (24). 



LAi;t;iiE, R. 



Mitt. D. dendr. Ges , Bonn, 1901, (202). 



LEwia; -E. J. 



Stratford, Essex, Nat., 12, 1903, (267- 

 286); 13, 1903 (138-160); 13, 1904, 

 (161-174). 



■ LoMO, F. Nor- 

 wich, Trans. Nat. Soc, 7, 1004, (()17- 

 619). 



