CONTENTS 
Pincasin: Hook, The relation of the health of the host and other factors to in- 
fection of Apium graveolens by Septoria Apii. .............2... 0.0000. I 
ARTHUR, pene CHARLES.. New species of Uredineae—XIII............... 31 
Berry, Epwarp W. Contributions to the Mesozoic flora of the Atlantic 
coastal aiki ea Wr CUTIERNOR OG Se RC Co see i ree etm 55 
Brake, S. F. Neomillspaughia, a new genus of Polygonaceae, with remarks 
On related genera (plate tT}; ose e ec. ae ee A ey a7 
PENNELL, FRANCIS W. ‘‘Unrecorded’”’ genera of Rafinesque—I. Auticon 
motanicon (7840) 9 sp eee ih ee a nie ieee rei 9 
McLEan, ForMaN T. A study of the structure of the stomata of two species 
Of Cine thy relation to Cire canker (oe ee oe Fro Ior 
Evans, ALEXANDER W. Taxilejeunea pterogonia and certain allied species 
Po) TE Gh 8 SER SER a Oia thoy AFT RRA SSM ocr ncn e ie UI dip lee Raced Cae en 107 
Riker, A. J. Chondriomes i Mit Bara (Dinte Ss) tak eS ee ee I41 
McATEE, W.L. Notes on Viburnum and the assemblage Caprifoliaceae..... I49 
RYDBERG, Per Axet. Notes on Rosaceae—XIII..........0.6.0. N00. oe 159 
Carey, CorNELIA LEE. On the gross structure of an agar Bel Cy i ey 173 
Gieason, H. A. A rearrangement: of the Bolivian species of Centropogon 
Me IOI i eh ae el Po is eval onc 189 
STEIL, W. N. Vegetative reproduction and -aposporous growths from the 
young sporepnyte of Polypodinuin iioides, . -. oo 3 
SMITH, CHARLES Piper. Studies in the genus eV The Stiversiani, 
Conmnelin re a ee 219 
Dup_er, A. W. The air chambers of Reboulia hemisphaerica............... 241 
WEATHERWAX, PauL. Anomalies in maize and its relatives—I.............. 253 
KERN, FRANK D. Distribution of ee ornate in epithe, EET ie 263 
STEIL, W.N. The development of p 
of Polypodium irigides (plate 4) Uae GTR UL PEN OVE Dk oe Cw Teh Pee eT 271 
GraFF, PAUL W. Philippine Basidiomycetes—IV.....................-4.. 285 
Becorp, Samu. J. Boxwoods of commerce. 2455 Spo es ee 297 
RYDBERG, PER AXEL. Phytogeographical notes on the Rocky Mountain region 
—X. rasslands and other open formations of the Montane Zone of the 
BONEHOIN MOCKICS eo er. caer Oaks OP OU eee 315 
BriTTON, NATHANIEL Lorp. Studies of West Indian plants—X............. 329 
INDEX TO AMERICAN BOTANICAL LITERATURE, 43, 73, 97, 137, 155, 183, 207, 235, 257° 
279, 397, 347 
pete TO NOAUMR AB iy or eh ek Nga be an SG ee eerie cae 353 
