636 LIST OF WORKS 



Webber, H. J. (01) Spermatogenesis and fecundation of Zamia. U.S. 



Dpt. Agric. Bur. Plant Industry, Butt. No. ii. 



Weiss, C. E. (72) Fossile Flora der jiingsten Steinkohlen-formation und 

 des Rothliegenden im Saar-Rhein-Gebiet. Bonn, 1869-72. 

 (74) Note in Zeitsch. Deutsch. Geol. Ges. Bd. xxvi. p. 616. 

 (79) Die Flora des Rothliegenden von Wlinschendorf bei Lauban 

 in Schlesien. Abh. geol. specialkarte von Preussen Bd. in. Heft i. 

 p. 1. 



Weiss, F. E. (12) Report of the 80th meeting (Portsmouth) of the 

 British Assoc. for the Advancement of Science, p. 550. 



(13) The root-apex and young root of Lyginodendron. Mem. 

 Proc. Manchester Lit. Phil. Soc. vol. LVII. pt. iii. 



(13 2 ) A Tylodendron-like fossil. Ibid. vol. LVII. pt. iii. 

 Wernham, H. F. (11) Floral Evolution; with particular reference to 



the sympetalous Dicotyledons. New Phyt. vol. x. p. 73. 



Wettstein, E. V. (90) Die Omorika-Fichte, Picea omorica (Pane.). 



Sitzber. K. Akad. Wiss. Wien, Bd. xcvm. Abt. i. p. 503. 



(11) Handbuch der systematischen Botanik. (Edit, ii.) Leipzig. 

 Wherry, E. T. (12) Silicified wood from the Triassic of Pennsylvania. 



Proc. Acad. Sci. Philadelphia, vol. LXIV. pt. ii. p. 366. 

 White, D. (90) On Cretaceous Plants from Martha's Vineyard. Amer. 

 Journ. Sci. vol. xxxix. p. 93. 



(01) The Canadian species of the genus Whittleseya and the 

 systematic relations. The Ottawa Naturalist, vol. xv. No. iv. p. 98. 



White, D. and C. Schuchert. (98) Cretaceous series of the West coast 

 of Greenland. Bull. Geol. Soc. America, vol. ix. p. 343. 



Wieland, G. JR. (99) A study of some American Fossil Cycads. Pt, ii. 

 The Leaf structure of Cycadeoidea. Amer. Journ. Sci. vol. vn. 

 p. 305. 



(02) Notes on living Cycads. I. On the Zamias of Florida. 

 Ibid. vol. xm. p. 331. 



(06) American Fossil Cycads. Washington. 



(08) Historic Fossil Cycads. Amer. Journ. Sci. vol. xxv. p. 93. 



(OS 2 ) Two new Araucarias from the Western Cretaceous. Geol. 

 Surv. South Dakota. 



(09) The Williamsonias of the Mixteca Alta. Bot. Gaz. vol. XLVIII. 

 p. 427. 



(11) On the Williamsonia Tribe. Amer. Journ. Sci. vol. xxxn. 

 p. 433. 



(II 2 ) A study of some American Fossil Cycads. Pt. v. Ibid. 

 vol. xxxii. p. 133. 



(12) Ibid. pt. vi. On the smaller flower-buds of Cycadeoidea. 

 Ibid. vol. xxxni. p. 73. 



(13) The Liassic Flora of the Mixteca Alta of Mexico, its com- 

 position, age, and source. Ibid. vol. xxxvr. p. 251. 



(14) A study of some American Fossil Cycads. Pt. vii. Further 

 notes on disk structure. Ibid. vol. xxxvin. p. 117. 



(16) American Fossil Cycads. Vol. n. Taxonomy. Washington. 



