316 INDEX TO RECENT LITERATURE 
Phillips, 0. P. How the Mangrove Tree Adds New Land to Florida. 
Jour. Geogr. 2: 10-21. Ja 1903.  [Hilust. ] 
Pilger, R. Ueber Pharus vittatus Lemaire. Notizbl. Kénigl. Bot. 
Gart. Berlin, 3: 138. 22 O Igor. 
A species from Central America. 
Piper, C. V. Four New Species of Grasses from Washington. Bull. 
Torrey Club, 30: 233-235. 24 Ap 1903. 
New species in ZZymus and Sitanion (3). 
Piper, C.V. A New Species of Waddsteinia from Idaho. Bull. Torrey 
Club, 30: 180, 181. 8 Ap 1903. 
W. Idahoensis sp. nov. 
Pollard, C. L. & Maxon, W. R. Some new and additional Records 
on the Flora of West Virginia. Proc. Biol. Soc. Wash. 14: 161- 
163. g Au igor. 
Powell, C. Observations on some Calcareous Pebbles. Minn. Bot. 
Stud. 3: 75-77. pl. 16, f. 8-2, pl.17. 21 Mr 1903. 
Ramaley, F. Observations on Zgregia Mensziesit. Minn. Bot. Stud. 
3: 1-9. pl. r-g. 21 Mr 1903. 
Ramaley, F. The Pubescence of Species of Astragalus. 
Torreya, 
3: 38-40. f 7-37. 20 Mr 1903. 
Rane, F. W. The Classification of American Muskmelons. N. H. 
Agric. Exp, Sta. Techn. Bull. 2: 83-115. f. 7-72. Mr 1got. 
Reverchon, J. The Fern Flora of Texas. Fern Bull. 11: 33-38. 
Ap 1903. 
Ross, F. A. Vagaries of Hefatica. 
Torreya, 3: 54-57. f. I-45: 
18 Ap 1903. 
Ruhland, W. Eriocaulaceae. Das Pflanzenreich, 4”: 1-294. f. 7-40. 
27 Mr 1903. 
Includes the new American genera Blastocaulon and Leiothrix, and new American 
species in Eriocaulon (12), Pacpalanthus (84), Leiothrix (9), Lachnocaulon and 
Syngonanthus (21). 
Rydberg, P. A. Studies on the Rocky Mountain Flora—X. Bull. 
Torrey Club, 30: 247-262. 24 Ap 1903. 
Includes descriptions of new species in Corispermum, Chenopodium, Endolepis, 
Cleomella, Cerastium (3), Draba (3), Lesquerella, Stanleya, Thelypodium, Lepidium, 
Thysanocarpus, Trifolium (2), Lotus, Lupinus (10), Pachylophus, Androsace, Gilia, 
Mertensia and Heliotropium. 
Sargent, C.S. Recently Recognized Species of Crataegus in Eastern 
Canada and New England.— II. Rhodora, 5: 108-118, 1 Ap 1903. 
Includes descriptions of eight new species, 
