694 Uredinales, Pncciniaceie, Pucciuiefe, Pucciuia. 



74. Puccinia Arthurella Trotter ii. nom. — Puccinia liroximella Aitbiir, 2512 

 Bull. Torr. Bol. Cl. 47., IJJliO, p. 471, iioii P. et H. Sydow 1912; 

 Urcdo pro.vimella 3. C. Artliiir, Mycologia v. VII, 1915, p. 324. — 

 Uredosoris pleriiniqiie hy[)opbyllis, in greges 2-4 nun. circ. crassis 

 confertis, bullatis, rotundatis v. irregularibus, latis, 0,3-0,9 mm. 

 latis, diu tectis, cinnaniomeo-brunneis, pulverulentis, epidermide 

 disrupta conspicue cinctis; uredosporis late ellipsoideis v. obovoi- 

 deis, 19-24 * 18-20, tunica cinuamomeo-brunnea, tenui, 1-1,5 (j-, cre- 



bre minuteque ecbinulata, poris subindistinctis, 4-6, sparsis 5 te- 

 leutosoris bypophyllis sparsis diu tectis, epidermide rupta cinctis; 

 teleutosporis ellipsoideis v. oblongis 26-42 * 21-27, utrinque rotun- 

 datis septo leniter constrictis, tuuica obscure castaneo-brunnea, 

 uniformiter 1,5-2 [i iucrassata, moderate sed distincte verrucosa ; 

 pedicello hyalino. 



Hab. in foliis Lactucae intybaceae, Sabana Grande 

 Porto Eico, America Centr. (F. L. Stevens, E. B. Maine). 



75. Pucclnia Liabi Mayor, M6m. Soc. neuchat. de Sc. JiTat. V (1913) 2513 

 p. 539, c. ic. — Teleutosoris hypophyllis, maculis sparsis, atris vel 

 atro-brunneis, rotundatis, 5-7 mm. diam. insidentibus, minutis, ro- 

 tundatis, compactis, confluentibus, obscure brunneis ; teleutosporis 

 oblougo-ellipsoideis, 40-59 * 14-21, dilute brunneis, utrinque rotuu- 

 datis, rarius basi attenuatis, medio constrictis, cellulis sensim pa- 

 ribus, iuterdum inferiore paulo majore, poro germiuativo cellulae 

 superioris apicali, inferioris ad septum, membrana levi, 1^5 (i crassa, 

 apice ad 4 |x incrassata, pedicello subhyalino, persistenti, 47 ^ 4-7, 

 deorsum diminuente; mesoporis copiosis, oblongo-ellipsoideis, apice 

 rotundatis, basi rotundatis vel saepius attenuatis, 35-47 * 14-21, 

 dilute brunneis, poro germinativo apicali, membrana levi 1 \i circ. 

 crassa, apice crassiuscula, usque ad 3-4 [x, pedicello subhyalino, 

 persistenti, -30 * 4-5. 



Hah. in foliis L i Ji !> i h a s t a t i in regione andina Oolumbiae? 

 alt. 1500-2400 m., America austr. 



76. Puccinia Paulsenii Sydow, Ann. Mycol. 17., 1919, p. 34. — Soris 2514 

 teleutos[)orileris amphigenis, in greges orbiculares 3-4 mm. diam. 

 dense dispositis, priniitus epidermide tectis, dein ea fissa cinctis 



et subpulverulentis, obscure brunneis, ca. 0,5 mm. diam.; teleuto- 

 ^noris plerumque ellipsoideis vel oblongo-ellipsoideis, utrinque ro- 

 tundatis, medio plus minusve coustrictis, dense puuctatis, flavo- 

 brunneis, 33-50 * 20-30, membrana 1,5-2 (x crassa, poro cellulae su- 

 perioris ad apicem cellulae sito, cell. inferioris proi^e septum sito 



