INDEX TO AMERICAN BOTANICAL LITERATURE 385 
Schulz, 0. E. Zrythroxylaceae. Symb. Antill. 5: 188-211. - 20 My 
Includes descriptions of 6 new species of Zrythroxylum, 
Shull, G. H. The significance of latent characters. Science II. 25: 
792-794. 17 My 1907. 
Shull, G. H. Some latent characters of a white bean. Science II. 
25: 828-832. 24 My 1907. 
Skottsberg, C. Zur Kenntnis subantarktischen ‘und antarktischen 
Meeresalgen. I. Phaeophyceen. Wissensch. Ergeb. Schwed. Siid- 
polar-Exped. 1901-1903 4°: 1-172. f. 1-187 + pl. I-10. map. 
’ 1907. 
Includes new species in Zctocarpus (2), Geminocarpus (gen. nov.), Myrionema 
(2), Leptonema, Elachistea, Lessonia, and a new genus Utriculidium, from the Falk- 
land Islands and Tierra del Fuego. 
Small, J. K. Additions to the tree flora of the United States. Tor- 
reya '7: 123-125. 19 Je 1907. 
mith, E.H. The blossom end rot of tomatoes. Tech. Bull. Mass. 
Agric. Exp. Sta. 3: 3-19. f 7-6. Ap 1907. 
Sterki, V. Hibernacula of Utricularia. Ohio Nat. 7: 158. 15 My 
1907. 
Sudworth, G. B. A new California oak (Quercus Pricet). Fores- 
try & Irrig. 13: 157, 158 f. 4. Mr 1907. 
Sudworth, G. B. A new tree juniper for New Mexico (/uniperus 
megalocarpa). Forestry & Irrig. 13: 307-39: fi, 2 Je 19°7- 
Terry, W. A. Causes of variation in color in some red algae. Rho- 
dora 9: go, gt. 3 Je 1907. 
Turner, J. B. Variation in the corolla of Linaria vulgaris Mill. 
Science II. 25: 1003, 1004. 28 Je 1907. 
_ Underwood, L. M. The progress of our knowledge of the flora of 
North America. Pop. Sci. Mo. 70: 497-517: f.1-7. Je 1907- 
Urban, I. Composttarum genera nonnulla. Symb. Antill. 5: 21T2- 
286. 20 My 1907. 
Includes new species in Mikania (2), Baceharis, and Pectis i 2 ee 
Urban, I. Nova genera et species III. Symb. Antill. 5: 287-352. 
20 My 1907. 
New species described in Arundinaria (2), Zephyranthes (2), Gymnosiphon (2), 
Piper, (2), Peperomia (7), Pilea (27), Boehmeria (2), Dendropemon, Phoradendrum 
(3), Dendrophthora, Coccoloba (3); Tresine, Portulaca (4), Cleome (3), Morisonia, 
| Alchemilia, and Prunus. 
