INDEX to AMERICAN BOTANICAL LITERATURE 215 
Ricker, P.L. Anew color guide. Mycologia2: 37,38. 1 Jar1gio., 
Rose, J. N., & Purpus, C. A. Three new species of Echeveria from 
southern Mexico. Contr. U. S. Nat. Herb. 13: 45, 46. A/. zo—r¢. 
21 F rgro. 
Rothrock, J. T. Balsam fir (Ades da/samea Muhl.). Forest Leaves 
12: 105. Fuogro._ [Illust.] 
’ Rothrock, J. T. White cedar. Arbor vitae ( Zhuya occidentalis L.). 
Forest Leaves 12: 105. Frgro. _ [lIllust.] 
Saxton, W. T. The development of the embryo of Lucephalartos. 
Bot. Gaz. 49: 14-18. fl. 2+/f. 78. 22 Ja gto. 
Schaffner, J. H. The pteridophytes of Ohio. Proc. Ohio Acad. Sci. 
5: 265-305. 5 Jargro. [HIllust.] 
Shattuck, C. H. ‘The origin of heterospory in A/arsi#ia. Bot. Gaz. 
49: 19-40. p/. 3-6. 22 Ja Igto. 
Sheldon, J. L. Alenyanthes trifoliata in West Virginia. Rhodora 12: 
Li, 22..-30.Ja 1914. 
Shull, G. H. Color inheritance in Zychnis dioica L. Am. Nat. 44: 
83-91. F rgro. 
Shull, G. H. Inheritance of sex in Zychnis. Bot. Gaz. 49: 110-125. 
Je £5 RAGED THIS. 
Sinnott, E.W. Foliar gaps in the Osmundaceae. Ann. Bot. 24: 
107-118. fl. 17,12. Ja i1gto. 
Squires, W. A. Camas. Am. Bot. 15: 97, 98. [Ja 1910.] 
Starr, A.M. The microsporophylls of Ginkgo. Bot. Gaz. 49 : 51- 
54. P17. 2a ja soto: 
Stickney, M. M., Schaffner, J. H., & Davies, C. A. Additions to the 
flora of Cedar Point —III. Ohio Nat. 10: 61-63. Ja Ig10. 
Sudworth, G. B. A new cypress for Arizona. Am. Forestry 16: 88— 
go.  F tgro. 
Cupressus glabra, 
Taylor, N. Report ona trip to Santo Domingo. Jour. N. Y. Bot. 
Gard. 11: 3-15. f. 1-5. Ja gto. 
Van Pelt, S. S. Additional notes on the flora of Northampton’County 
[Pa.]. Bartonia 2: 1, 2. IgIo. 
Vickers, E. W. A list of the ferns of Mahoning County with special 
reference to Mill Creek Park. Ohio Nat. 10: 86-88. F 1910. 
Vickers, E. W. The pinnatifid spleenwort in northeastern Ohio. 
Fern Bull. 18: 4-7. Ja 1910. 
