Uredinacese, Uromyces. 53l 



ellipsoideis, lineis rectis b. subrectis e verrucis minutis hyalinis 

 dispositis ornatis, brunneis, 28-52 >f 24-32, episporio crasso (3-4 a.), 

 poris germ. plerumque 3 instructis; teleutosporis adhuc ignotis. 



Hab. in foliis Ehois (Styphoni;e) mollis, Oaxaca in Me- 

 xico (Holway). 



6. Uromyces Toxicodendri Berk. et Rav., Greviilea III (1874) p. 56; 2104 

 Sydow, Mon. Ured. II (1910) p. 146, tab. V, fig. 85, Pileoloria 

 hrevipes Berk. et Rav. Grevillea III (1874) p. 58. — Uredosoris 

 primariis plerumque in petiolis et nervis foliorum evolutis, plus 



vel minus expansis et usque 2 cm. long., crassis, pulverulentis, 

 cinnamomeis; secundariis amphigenis, sparsis, minutis, punctifor- 

 mibus, dilute brunneis; uredosporis primariis eilipsoideis apice pa- 

 pilliformi-protractis ibique dilutioribus, lineis sporam spiraliter cir- 

 cumdantibus e verrucis minutis dense aggregatis hyalinis disposi- 

 tis preeditis, dilute brunneis, 30-54 « 24-32, poris germinationis 

 duobus instructis, episporio c. 3,5 [j.. cr. ; secundariis eadem fere 

 forma et structura, sed minoribus 28-40 ^ 20-27 ; teleutosoris am- 

 phigenis, prsesertim epiphyllis, maculis iiavidis plerumque insiden- 

 tibus, minutis, sparsis v. subinde aggregatis, rotandatis, usque ad 

 1 mm. diam., pulverulentis^ atris; teleutosporis globoso-lenticula- 

 ribus, apice basique plus minusve compressis, ad pedicelli inser- 

 tionem excavato-umbonatis, verrucoso-undulatis, obscure castaneo- 

 brunneis, 16-23 -j.. altis, 23-28 [i. latis; pedicello persistenti, hya- 

 lino, usque ad 75 [x. longo. 



Hdb. in foliis et petiolis Rhois aromaticie, floridanse, 

 radicantis, Rydbergii, Toxicodendri, America bor, Ja- 

 ponia. — Ab U. Terebinthi dijBEert uredosporis omnino diversis et 

 pedicello teleutosporarum breviore. 



7. Uromyces patzcuarensis Holw., Aun. mycol. (1904) p. 393; Arthur, 2105 

 North Amer. Fl. VII (1907) p. 148 [Pileolaria). — Pycnidiis epi- 

 phyllis, gregariis, in parvos greges 0,5-1 mm. diam., confertis, 

 papillatis, primitus subcuticularibus, sed manifestis, dein nigri- 

 cantibus, hemisph;orico-depressis, 80-120 [j.. diam. ; uredosoris am- 

 phigenis, irregulariter sparsis, rotundatis, minutis, 0,1-0,2 mm. 

 diam., mox nudis, pulveraceis, pallide cinnamomeo-brunneis; ure- 

 dosporis late fusiformi-ellipsoideis 30-40 « 23-29, utrinque ex obtu- 



so acutatis; tunica brunnea 3-4 [j.. cr., supra usque ad 5-8 [j.. in- 

 crassata, verrucosa, verrucis subseriatis, poris minutis 3, ;equato- 

 rialibus pr;udita; teleutosoris plerumque epiphyllis, sparsis, rotun- 

 datis, 0,2-0,7 mm. diam., mox nudis compactis, theobromino-brun- 



