254 Perouo.sporucece, Oystopus. 



nidiii aiU oiunino conformia, liyalina, ^oospoms giguentia ant dif- 

 formia, plurima hyalina zoosporipara, pauca autera, in monili ter- 

 minalia, membrana cras.sioro saepe lutescente tecta, aut gorminau- 

 do tubum simplicem protrudentia aut sterilia. Oospor;c globo.sjc, 

 episporio plerumque reticulato vel verrucoso. 



1. Cystopiis candidus (Per.s.) Lev. in Anu. Scieuc. Nat. Ser. 3, 1S47, 7^ 

 t. VIII, p. :>71, Uredo candida Fer.soon Syn. Fuilg. 2^;), Ccroma 

 candulum Schlecht. Flor. Ber. II, p. 117, Urcdo Cheiranthi Per.s. 

 Syn. Fung. 2'M, Ur. candida auct. plurim., Ery^ibc sphccrica 

 Wallr. Fl, Crypt. gerni,, Ci/sfopus sphcvricns Ronprden in Ra- 

 benh. Fungi Eur.. uEcidium candidam Per.-^., Uredo Cruci/era- 

 rvm De Cand. — Soris erumpentibus albi.s, variis; conidiis omni- 

 bus coiiformibus. globosis, 10-18 •;.. diaui., inembrana circumcirca 

 ffiquali, acliroa: oosporis subglobosis, o5-40 /. diam., episporio lu- 

 teo-fusco, verrucis crassis, irregularibus, obtusis. interdum in cri- 

 stas fle.\.uosas confluentibus obsito, munitis. 



llah. in foliis, caulibus, pedicellis, iioribus et pericarpio Cruci- 

 ferarum, pra^cipue Capsolho I)u r sre-Pas to r is, Erysimi 

 chei ran thoi d i s , Fchinospermi Lappulae, Prassicre 

 Rapnc et Pi. nigra\ Fvacis pygmea», Sisymbrii Sophifp, 

 officinalis, Coronopi, Camellinre sativa), C. microcar- 

 pae. Cardaminis styiosfr, amara^ et C. African.T. Lepi- 

 dii i'uncifoIii, L. Virginici, Sonebierw p i n natifid». 

 liarbarea^ strictre, \\. vulgaris, I)i pl o tax ecfs, Alyssi 

 c a I y c i n i, D e n t a r i re d i p h y i 1 ??, I b e r i d i s u m b el J a t n\ T u r- 

 ritis glabrjv, Nastnrrii amphibii, N. palustris, N. sil- 

 V e s t r i s . A r a b i d i s a r e n o s o}. .\ . H a 1 1 e r i, A. Ge r a r d i , S t o • 

 n p h r a g m at i s T Ji a I i a n je, S i n a p i s a r v e n s i s , B e r t e r o :e 

 i n c a n fe, C o c h 1 e a r i a^ A r m o r a c i a?, C. G r o e I a n d i c le, T h 1 a- 

 speos arvensis, Teesdalea^ nudicaulis, Yogelia^ pani- 

 culata», i-ihaphani Rhaphanistri et R. sativi in Enropa. 

 .\fric;i, .Vsia et America boreali et anstr. 



2. Cystopus Tragopogonis (Pors.) Schroet. Krypt. Flor. Schles. Pil/p 79. 

 ])ag. 2:34, Uredo Traqopogi Porsoon 1801. Cnslopuii GiibictiS D«' 

 IJary Rech. sur le dev. in Anu. Sc. Nat. 1 .'^er. t. XX, pag. 132. 

 tab. 1 et 2, Uredo rabica Strauss in Aiiu. Wetterauer G(^?>. f. 

 Naiurk II, \). 8i), t. I(. f. 3, I-. Trarjopoffonis DC. Fi. 1'raQC. II. 

 Urrdo oblusata Link. U. candida var. Per.soon. et auct. plur.. 

 (^i/sfopuK cubicns Lev. Ann. Scienc. Nat. Ser. 3. t. VIII, — Sori- 

 epiphyllis et hypoph^^llis. globosis vel oblongis. compressis; coni- 



