576 PICARD: BIBLIOGRAPHY 
of the Flora of the Northern States and Canada,”’ 2d ed., 1907, 
when the plants cited are contained in this volume. In the case 
of forms not within the range of this work, the nomenclature 
follows the rules laid down by the International Botanical Congress 
at Vienna. Where the two systems differ, the designation of the 
Vienna code is added in parentheses. 
BIBLIOGRAPHY 
ANGIOS PERM AE—MonocoTyLEDONES 
NAIADALES. NAIADACEAE 
Potamogeton foliosus Wiegand, K.’99, Bot. Gaz. 28: 328-359. 
Naias marina Guignard, L. ’98, Arch. Anat. Micr. 2: 455- 
509. 
Guignard, L. ’99, Compt. Rend. Acad. Sci. 
Miiller, H. A. C. ’12, Arch. Zellforsch. 8: I-51. 
Zostera marina Rosenberg, O. ’o1, Bihang Ké6ngl. Sv. Vet.- 
Akad. Handl. 27°: 1-24. 
Rosenberg, O. ’o1, Meddel. Hég. Bot. Inst. 
Stock. 
ALISMACEAE 
Sagittaria latifolia Schaffner, J. H. ’07, Ohio Nat. 7: 41-48. 
GRA MINALES—GRAMINEAE 
Triticum vulgare Kérnicke, M. ’97, Untersuchungen tiber die 
Entstehung und Entwicklung der Sexual- 
organe von Triticum mit besonderer Be- 
riicksichtigung der Kernteilung. Bonn 
Diss. 
T. vulgare, Hordeum Nakao, M. ’11, Jour. Coll. Agr. Tohoku Imp. 
distichon, Secale cere- Univ. Sapporo, 4°. 
ale, T. vulgareXS. 
cereale 
T. vulgare, Aegilops Bally, W. ’12, Ber. Deuts. Bot. Ges. 39: 
ovata 163-172. 
Oryza sativa Kuwada, J. ’10, Bot. Mag. Tokyo, 24: 267- 
Saccharum oficinarum Franck, W. J. ’11, Somatische Kern- en Cel- 
deeling en Microsporogenese bij het Sui- 
kerriet. Diss. Delft. Amsterdam. (Bot. 
Centralbl. 120: 644.) 
Zea Mais - Kuwada, J. ’11, Bot. Mag. Tokyo, 25: 163- 
181; 405-415. 
