468 GYMNOSPERMS 



457. Prankerd, Theodora L., On the structure of the paleozoic seed Lagcno- 

 stoma ovoides. Jour. Linn. See. London 40:461-90. pis. 22-24. 1912. 



458. Prat, Henri, Note sur les pousses courtes du pin maritime. Bull. Biol. 

 Arcachon 27:49-67. 1930. 



459. Prosina, M. N., Verhalten dcr Chondriosomen bci der Pollenentwicke- 

 lung von Larix dahurica. Zeit. Zellforsch. u. Mic. Anat. 7: 1 14-34. 1928. 



460. Rattray, Geo., Notes on the pollination of some South African Cycads. 

 Trans. Roy Soc. So. Africa. 3:259-71. 1913. 



461. Reed, Fredda D., Flora of an Illinois coal ball. Bot. Gazette V. 81 :46o- 

 69. 1926. 



462. Reinke, J., Parasitische Anabaena in Wurzeln der Cycadeen. Gott. 

 Nachr. 107. 1872. 



463. Renault, B., Recherches sur la fructification de quelques vegetau.x pro- 

 venant des gisements silicifies d'Autun et de Saint fitienne. Ann. Sci. 

 Nat. Bot. VI. 3:5-29. pis. 1-4. 1876. 



464. , Structure comparee de quelques tiges de la flore carbonifere. 



Nouv. Arch. Mus. Hist. Nat. II. 2:213-48. pis. 8. 1879. 



465. , Cours de botanique fossile. Paris. 1880-84. 



466. , Note sur le genre Athcotesta. Mem. Soc. Hist. Nat. Saone-et- 



Loire. pp. 156, 158. 1887. 



467. , Bassin houiller et Permien d'Autun et fipinac. IV. Flore fossile. 



pp. 557. 1896. 



468. — , Bassin houiller et Permien d'Antun et d'Epinae. IV. Flore fossile. 



Part II. pp. 578. ph. 62. Paris. 1896. 



469. Renner, Otto, Ueber Zwitterbliithen bei Jtinipcrus communis. Mora. 



93:297-300- fi&s- 3- 1904- 



470. Reynolds, Lillian G., The female gametophyte of Microcycas. Bot. Ga- 

 zette 77:391-403. pis. 28, 2Q. 1924. 



471. Rhine, J. B., Clogging of stomata in conifers in relation to smoke injury 

 and distribution. Bot. Gazette 78:226-32. 1924. 



472. Robertson, Agnes, Spore formation in Torrcya calif arnica. New Ph_\tol. 

 3:133-48. pis. 3, 4. 1904. 



473. , Studies in the morphology of Torreya californica. II. The sexual 



organs and fertilization. New Phytol. 3:205-16. pis. y-g. 1904. 



474. , Some points in the morphology of Phyllocladus alpina Hook. 



Ann. Botany 20:259-65. pis. 17, 18. 1906. 



475. , The Taxoideae; a phylogcnetic study. New Phytol. 6:92-102. 



pi. I. 1907. 



476. Rose, J. N., A new species of Ephedra. Contributions from the U.S. 

 National Herbarium. 12: 261. 1909. 



477. Sablon, Leclerc du, Recherches sur le tige dcs fougeres. Ann. Sci. 

 Nat. Bot. VII. 11:1-16. pis. J, 2. 1890. 



478. Sachs, J., Lehrbuch. 1868. 



479. , Textbook of botany. Second English edition. 1882. 



