REFERRED TO IN THE TEXT 623 



Pearson, H. H. W. (06 2 ) Some observations on Welwitschia mirabilis. 

 Phil Trans. E. Soc. vol. cxcvni. p. 265. 



(09) Further observations on Welwitschia. Ibid. vol. CO. p. 331. 



(12) On the Microsporangium and Microspore of Gnetum, with 

 some notes on the structure of the Inflorescence. Ann. Bot. vol. 

 xxvi. p. 603. 



(15) A note on the inflorescence and flower of Gnetum. Ann. 

 Bolus Herb. vol. I. pt. iv. p. 152. 



(15 2 ) Notes on the Morphology of certain Structures concerned in 

 Reproduction in the genus Gnetum. Trans. Linn. Soc. vol. vm. 

 pt. viii. p. 311. 

 Penhallow, D P. (91) See Dawson and Penhallow. 



(97) Myelopteris topekensis n. sp. a new Carboniferous Plant. 

 Bot. Gaz. vol. xxiii. p. 15. 



(00) Notes on the North American species of Dadoxylon. Trans. 

 R. Soc. Canada [2], vol. vi. sect. iv. p. 51. 



(02) Notes on Cretaceous and Tertiary Plants of Canada. Trans. 

 R. Soc. Canada [2], vol. vrn. sect. iv. p. 31. 



(03) Notes on Tertiary Plants. Ibid. vol. ix. sect. iv. p. 83. 



(04) The anatomy of the North American Coniferales together 

 with certain exotic species from Japan and Australia. Amer. Nat. 

 vol. xxxvm. pp. 243, 523. 



(07) A Manual of the North American Gymnosperms. Boston. 



(08) Report on a collection of Fossil woods from the Cretaceous 



of Alberta. The Ottawa Naturalist, vol. xxii. No. iv. p. 82. 



Phillips, J. (71) The Geology of Oxford and the valley of the Thames. 



Oxford. 

 Pilger, R. (03) Taxaceae. Das Pflanzenreich (A. Engler), Heft xvin 



(iv. 5). Leipzig. 

 Platen, P. (08) Untersuchungen fossiler Holzer aus dem Westen der 



Vereinigten Staaten von Nordamerika. Leipzig. 

 Pomel, A. (49) Materiaux pour servir a la flore fossile des terrains 



jurassiques de la France. Amt. Ber. Versam. Ges. deutsch. Natur- 



forsch. und Arzte. Aachen. 

 Porsch, C. (05) Der Spaltoffnungsapparat im Lichte der Phylogenie. Jena. 



(10) Ephedra campylopoda 0. A. Mey. eine entomophile Gymno- 



sperme. Ber. Deutsch. Bot. Ges. Bd. xxvin. p. 404. 



Potonie, H. (88) Die fossile Pflanzen-Gattung Tylodendron. Jahrb. K. 

 Preuss. geol. Landes. p. 311. 



(96) Ueber Autochthonie von Carbonkohlen-Flotze und der 



Senftenberger Braunkohlen-Flotze. Ibid. (1895), p. 1. 



(02) Fossile Holzer aus der oberen Kreide Deutsch-Ostafrikas. 



Die Reisen des Bergassessors Dr Dantz in Deutsch-Ostafrika in 

 den Jahren 1898-00. Mitt, aus den deutschen Schutzgebieten, 

 Bd. xv. Heft iv. p. 227. 



(03) Pflanzenreste aus der Jura-formation. Durch Asien. Bd. in. 



Lief. i. Berlin. 



