894 Uredinales, Urediuacese infer., Aecidium. 



18-26 ^ 15-22, leniter laciniatis, tunica extus levi trausverse striata, 

 6-8 i^ cr., intus crebre prominenterque verrucosa 3-4 \i cr. ; aeci- 

 diosporis irregulariter globosis, 12-18 [i diam., tunica byalina 1 ji 

 circ. cr., niinutissinie et subinconspicue verrucosa et tunc appa- 

 renter levi. 



Hab. in foliis E u p b o r b i a e (Eumecantlii) lancifoliae, 

 in Guatemala, Amer. Centr. 



96. Aecidium Tithymali Arth., Bull. Torr. Bot. Cl. 45., I918, p. 151, 308'i 

 Sydow, Mon. Ured. IV, 1923, p. 189. — Pycnidiis bypophyllis, spar- 

 sis, raelleis, dein brunneolis, 110-150 ij^ diam.; aecidiis hypophyllis, 

 per totam folii superficiem aequaliter sparsis cupuhitis, 300-400 {jl 

 diam., margine lacerato revoluto ; cellulis peridii rhomboideis, 23- 

 30*10-16, pariete exteriore striato 5-7 |i crasso, interiore verru- 

 coso 2-3 11 crasso; sporis globosis usque late ellipsoideis, dense mi- 

 nuteque verruculosis, subhyalinis, 19-24*18-22, episporio 1-1,5 \x 

 crasso. 



Hab. in foliis E u p h o r b i a e (Tithymali) c o m m u t a t a e , 

 leiococcae, missouriensis, robustae, in America 

 boreali pUiribus locis. 



97. Aecidium innatum H. et P. Syd. et Butl., Ann. Mycol. X, 1912, 308« 

 p. 273; Mon. Ured. IV, 1923, p. 191.— Pycnidiis numerosis, am- 

 phigenis, praecipue hypoiihj-llis, in greges rotundatos 3-5 mra. latos 

 dispositis, raaculis distinctis orbicularibus flavo-brunneolis insiden- 

 tibus, subcuticularibus, brunueis; aecidiis pycnidia circulariter am- 

 bientibus, profunde et omnino in contextu raatricis imraersis ideo. 

 que peridio proprio carentibus ; aecidiosporis angulato-globosis usque 

 ovoideis, verruculosis, dilute flavis, 20-30 * 15-25. 



Hab. in foliis Gr 1 o c h i d i i sp., Matheran Bombay Presidency 

 (S. L. Atrekar), G1. bbovati, iu ins. Forraosa. 



98. Aecidium Mozinnae Arth., Bull. Torr. Bot. Cl. 45., 1918, p. 152; 308( 

 Sydow, Mon. Ured. IV, 1923, p. 192. — Pycnirliis plerumque epi- 

 phyllis, paucis aggregatis, melleis, parura j)erspicuis, 90-125 p- diam.; 

 aecidiis hypopbyllis, pycnidia circuradantibus , singulis subinde 

 etiam epipbyllis, raaculis flavidis 2-5 ram. diam. insidentibus, laxiu- 



- scule gregariis, breviter cylindraceis, ca. 200 [x diam., margine albo 

 erecto lacerato ; cellulis peridii quadraticis vel rectangularibus, 

 30-36 11 longis, 19-25 \x latis, pariete exteriore striato 10-12 [i crasso, 

 interiore valde verrucoso 3-5 fi crasso ; sporis angulato-globosis^ 

 deuse verruculosis, subhyalinis, 24-29 * 20-24, episporio 2-2,5 ii cr. 

 Mab. in foliis M o z i n n a e (Jatrophae) spathulatae, Gua- 



