INDEX TO RECENT LITERATURE 127 
Hazen, T. E. The Ulothricaceae and Chaetophoraceae of the United 
States. Mem. Torrey Club, 11: 135-250. p/. 20-42. 20 O 
1902. 
Includes new species in Stichococcus, Microspora (2), Myxonema (5), Chaetophora 
and Draparnaldia. 
Hildebrand, F. Einige biologische Beobachtungen. Ber. Deuts. Bot. 
Gesells. 19: 472-483. 27 N 1901. 
Devoted in part to Jefersonia diphylla and Apios tuberosa, 
Hill, A.W. The Histology of the Sieve-tubes of Pinus. Ann. Bot. 
15: 575-612. pl. 77-737. D t1got. 
Hill, E. J. The Earliest Fern. Fern Bull. 10: 78, 79. Jl 1902. 
Hill, E. J. Pe//aea atropurpurea an Evergreen. Fern Bull. 10: 82. 
Jl 1902. 
Hinze, G. Ueber die Blattentfaltung bei dicotylen Holzgewachsen. 
Beih. Bot. Centralb. 10: 224-256. p/. 1901. 
Hochreutiner, B. P.G. Malvaceae novae vel minus cognitae. Ann. 
Conserv. & Jard. Genéve, 6: 10-59. f/. z. 1902. 
Includes new American species in Briguetia (gen. nov.), Abutilon (5), Wissadula 
(2), Sida, Pavonia (3), Hibiscus and Cienfuegosia. 
Hock, F. Ankémmlinge in der Pflanzenwelt Mitteleuropas wahrend 
des letzten halben Jahrhunderts. —I. Beih. Bot. Centralb. 9: 241- 
255. 1900;—II. Beih. Bot. Centralb. 9: 321-333. 1t900;—lIIL 
Beih. Bot, Centralb. 9: 401-417. 1900;—IV. Beih. Bot. Cen- 
tralb, 10: 284-300. 1901;—V.  Beih. Bot. Centralb. 11: 261- 
281. Igor. 
Hohlke, F. Ueber die Harzbehilter und die Harzbildung bei den 
Polypodiaceen und einige Phanerogamen. Beih. Bot. Centralb. 11: 
8-45. fl. 7~-3. 1901. 
Holm, T. Some new anatomical Characters for certain Gramineae. 
Beih. Bot. Centralb. 11: 101-133. f. Z; 2. 1901. 
Holt, G. W. Is Cirsium palustre a Native of New Hampshire? Rho- 
dora, 4: 217. 19 N 1902. 
Howard, A. On Diplodia cacaotcola P. Henn.; a Parasitic Fungus on 
Sugar-cane and Cacao in the West Indies. Ann. Bot. 15: 683-701. 
Pl. 37. D got. 
Hulst, G.D. ‘The Story of a Fern Hunt. Fern Ball. 6: 1, 2 «Ja 
Tgot. 
