422 INDEX TO RECENT LITERATURE 
Sellards, E. H. On the Fertile Fronds of Crossotheca and Myriotheca, 
and on the Spores of other Carboniferous Ferns, from Mazon Creek, a 
Illinois. Am. Jour. Sci. IV. 14: 195-202. Al. 7.. S 1902. "| 
Includes description of Crossotheca trisecta sp. nov. 
Sellards, E. H. On the Validity of /diophyl/um rotundifolium Lesquer- 
eux, a Fossil Plant from the Coal Measures at Mazon Creek, Illinois. | 
Am, Jour. Sci. IV. 14: 203, 204. fz, 2. S 1902. 
Setchell, W. A. The Upper Temperature Limits of Life. Science, 
Il. 17: 934-937. 12 Je 1903. 
Setchell, W. A. & Gardner, N. L. Algae of Northwestern America. 
Univ. Calif. Publ. Bot. 1: 165-418. p/. 77-27. 31 Mr 1903. 
Includes description of two new genera, Co//insie//a and Whidbeyella, and of many 
new species and varieties. 
Shear, C.L. Fungi on Old Logs and Stumps. Plant World, 6: 139. 
pl. 20. Je 1903. 
Verrill, A. E. The Bermuda Islands: their Scenery, Climate, Pro- 
ductions, Physiography, Natural History and Geology ; with Sketches 
of their Early History and the Changes Due to Man. Trans. Conn. 
Acad. 11°: i-x, 414-957. p/. 65-104 +f. 1-246. Ap 1902-F 1993- 
Includes chapters on the character and origin of the original flora, effects of deforest- 
ing, introduction of useful plants, weeds, shade trees, etc. 
Wieland, G. R. Notes on Living Cycads.—I. On the Zamias of 
Florida. Am. Jour. Sci. IV. 13: 331-338. f. 7-5. My 1902. 
Wieland, G.R. A Study of some American Fossil Cycads. Part IV. 
On the Microsporangiate Fructification of Cycadoidea. Am. Jour. 
Sci. IV. 11: 423-436. f. 7-3. Je 1901. 
Wildeman, E. de. Betula papyrifera Marsh. Ic. Sel. Hort. Then. 
4: 19-24. fil. 125. Ja 1903. 
Wildeman, E. de. Calandrinia grandiflora Lindl. var. discolor Ve 
Wild. Ic. Sel. Hort. Then. 3: 151-155. p/. 777. D 1902. 
Native of Chile. (C. discolor Schrad. ) 
Wildeman, E. de. Hibiscus palustris L. Ic. Sel. Hort. Then. 3: 
157-160. p/. 178. D 1902. 
A species of North America and Europe. (//. Moschentos L.) 
Wildeman, E. de. Leftocarpha rivularis DC. Ic. Sel. Hort. Then. 
4: 41-43. pl. 129. Mr 1903. 
Native of Chile. 
Wildeman, E.de. Monnina Xalapensis Humb., Bonpl. et Kunth. Ic. 
Sel. Hort. Then. 4: 1-4. A/. 727. Ja 1903. 
A Mexican species. 
