530 INDEX TO RECENT LITERATURE 
Griffiths, D. Range Improvement in Arizona. Bull. U. S. Dept. 
Agric. (Plant Industry), 4: 1-31. pl. 7-6 +f. 1-5. 1901. 
Griffiths, D. Forage Conditions on the northern Border of the Great 
Basin. Bull. U. S. Dept. Agric. (Plant Industry), 15: 1-60. pl. I- 
76. 1902. 
Grout, A. J. How shall our Wild Flowers be Preserved. Plant 
World, 5: to1-106. Je. 1902. 
Grout, A. J. Some Vegetable Air-Ships. Harper’s Month. Mag. 
256-260. Jl. 1902. 
Harper, R. M. Notes on El/iottia racemosa. Plant World, 5: 87- 
90. pl. 72. My. 1902. 
Harper, R.M. Zaxodium distichum and related Species, with Notes on 
some geological Factors influencing their Distribution. Bull. Torrey 
Club, 29: 383-399. 20 Je. 1902. 
Recognizes Zaxodium imbricarium (Nutt.), as a distinct species. 
Harris,C.W. Lichens— 7heloschistes, Pyxine. Bryologist, 5: sila 
f. 1-7. Jl. 1902. 
Hennings, P. Myriangium mirabile P. Henn. n. sp. Sowie Bemer 
kungen iiber versch iedene andere Arten der Myriangiaceen. Hed- 
wigia (Beiblatt), 41: (54)-(56). 24 Ap. 1902. a. 
Hennings, P. Fungi nonnulli novi ex regionibus variis. Hedwig!4 
(Beiblatt), 41: (61)-(66). 24 Ap. 1902. 
New species in Ustilago (2), Aecidium (2), Disciseda, Micropeltis, Lisonia, Aa 
Sphaeria, Pseudopeziza and Jsaria (2), from Mexico, Guatemala and South Ameri 
Hill, E. J. Fissidens grandifrons, its Habits and Propagation. Bry- 
ologist, 5: 56-58. Jl. 1902. [Illust.] 
Hollick, A. Notes on our common stemless Violets. Proc. Nat. Scl- 
Assoc. Staten Island, 7: 39. 10 My. 1902. 
Holm, T. On the genus Arcfophi/a Rupr. Ottawa Nat. 16: 77-85: 
pl. I. Je. 1902. 
Includes three new species, 
Holzinger, J. M. Seligeria tristichoides Kindb. Bryologist, 5 oe 
64. Jl. 1902. tI 
H[ooker], J. D. Lchinocactus microspermus. Curt. Bot. Mag. Hl 
58: p/. 7840. Je. 1902. 
Native of Argentina. 
Howe, M.A. An Attempt to introduce a Seaweed into the local 
Jour. N. Y. Bot. Garden, 3: 116-118. Je. 1902. 
Howe, M. A. Notes on American Hepaticae. Bull. Torrey 
29: 281-289. 26 My. 1902. 
Erio- 
Flora. 
Club, 
