8(52 Phycomyceta". Paronosporacefc, Peronospora. 



I. Sclerospora Farlowii GrifF., Bull. Torr. Bot. Ckib, XXXIV (1907) 3308 

 p 207. — Maculis irregularibus decoloratis, griseo-nigris, margine 

 saturatioribus, in foliis vaginis et culmis, raro in inflorescentiis, 

 insiflentibus; oosporis subglobosis, 28-45 a. diam., obscure fuscis, 

 saepe nigris <'t opacis, in parenchymate immersis, sepositis portiun- 

 culis mycelii adhicrentis pra^ditis. 



lldb. in Chloride eleganti, Cochise, Arizona Amer. bor. 



PERONOSPORA Corda — Syll. VII p. 244, IX p 342, XI p 243, 

 XIV p. 458, XVI p. 397, XVII p. 521. 



1. Peronospora Ononidis G. W. Wilson. Ann. Mycol. (1910) p. 185. 3307 

 Hypophylla sparsa; conidiophoris 200-500 's' 7-9, 6-8-ies ramosis, 

 ramis angulato-divergeutibus, rectis v. s:i',pius recurvatis, paenul- 

 timis et ultimis subicqualibus, rectis v. lateralibus saepius recur- 

 vatis, 8-14^2-3; conidiis late eilipsoideis, 21-26^15-20, pallide 

 violaceis; oosporis globosis, c. 32-38 |j-, diam., episporio aureo- 

 brunneo, densissime minuteque tuberculato, tuberculis c. 1 |x. cr. ; 

 oogoniis fugacibus. 



Hab.m foHis Ononidis repentis in Germania (Sydow, Myc. 

 March. n. 1441; Phyc. Prot. n. 111), Ononidis spinosae in 

 Dania (Rostrup, Myc. univ. n. 616). ' 



2. Peronospora Calandriniae Speg., An. Mus. Nac. B. Aires t. XIX 3308 

 (1909) p. 283. — Maculis nuHis; hyphis conidiiferis hypophyllis, 

 valde laxis, erectis, 200-350 ^ 10-15, deorsum simplicibus sursum 

 non V. obsolete dichotomis, ramulis ultimis 20-50 ^ 5-6, rectiuscu- 



lis. obtusiusculis, minute laxeque papillulosis; conidiis ut hyphis 

 hyalinis. ellipsoideis utrinque rotundatis, 15-20^12-15, levibus, a- 

 crogenis v. pleurogenis. 



Hab. in foliis vivis Calandrinias por tulacoidis in ex- 

 celsis audinis Aconcaguie (4000 m. alt.i prope las Cuevas, Men- 

 doza Amer. austr. — Insertione conidiorum abnormis et a Per. 

 CI(ii/fo7ii(r toto c.ilo divcrsa. 



3. Peronospora andina Speg., An. Mus. Nac. Buenos Aires t. XIX 3309| 

 (1909^ p. 282, fig. 3. — Cajspitulis conidiiferis plerumque hypo- 

 phyllis folium plus minusve doformantibus, dense constipatis, cri- 

 spulo-Ianuginosis, cinerescentibus; hyphis erectis 1-2 mm, long., 

 10 [).. cr., in dimidio inforo simplicibus, superne plus minusve al- 

 terno ramosis, raraulis ultimis subdichotomis, incurvulis, acutis ; 

 conidiis levibus, 25 « 16, antice rotundatis, postice rostrato-acutatis, 

 primo hyalinis serius fumosis, inius dense minuteque granulosis. 



