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Aiiiiilii'ji'iHiii- nr lii'i|iiciiil\ r|(i|ili\ lldii-. I'l'iilliciiii >.')-|i*0/<, 

 • liiik liiciu II. njiiikc. icticiiliitioMS >iiiiill. liillii'i' fili-ciiiv ; ii|i|icii(|iiyt'.- 

 Iroiii |i* or I- to 'JO or iiioii*. vjicn iiiL'' in IriiLitli li'iiin imrc iiiid ti liiiH' 



to liillf Of iiiiiic times till- flii, 'Irr ol' the |i«'|'irlir('|(iiii. culnicil Inr inure 



tllilli llilir tlieil- leliutli. Ill |itl\ sepliite. iMT;i»inliiii|y t'ollieil. li|i.- 



lousely iiljil -niiieu llilt ,-|iilii'l_V niileil. A-ei (i\ ale, |M'i|iic||!ite. Spo- 

 I'iiliii I ti. 



\'ei V iiire on \iiie< (if eiilli\afei| viiiielies of lV//'.s luliriisra in 

 llilti\(' I Ainei icjill I vilievjilil- .Mveelilim vel\ tllill. wllifi'll. W illl VeiT 

 f<Ieii(|er lloeci. orliieiiliW, liol r|o-e piosed. I'l'iil iiei'iii \eiy lliiliille. 

 scilltei'eil. Iiiownisli-liliiek. lilolidse. Wlieil Jllillinljilil. tlii> .-liecies also 

 tIe.»tlo\> llie rniit. — Scliw. I. r. 



On ]'ttls iifstii nils. ]'. vlnii-iii. V. luhnisvti, I', rijitirln ;\\\A V. 

 I'liiit'iui. Aiii/tc/ops/.H i'K.sp/'(/<i/ii -.w^ii A. f/in'in^n(f'u//')i. 



Tlii,- i.-i a veiT coniMiuii species, widely di.-liiliiled tliidiiiilioiit llie 

 (Mdintry. IVoni tlie Atlaiilie to tlie |'a<'itie coast. If is tlie powdery 

 mildew of cultivated 'jrape vines, and tliere is udod reason to suppose 

 that tlie so-called Oltliiiin Tinlirl of Kiiiopeaii vineyards is tlic same 

 tllinti'. willioiit. however, the de\ (dopnieiit of the perithecia. The 

 eonidia I'oiind with the jierilhecia in .\iiierica are iiidistiii<^'iiislialde 

 rroiii those on I'liiropeaii vines in their native regions, and these same 

 Kiiropean vines urowii in this country haxc hotli eonidia and peri- 

 thecia alto'iether similar to those on Anieriean vrajies. If it is Irne 

 tlii't the Kiiropean conidiadieariiii;' parasite is really the pi'esent species, 

 till' iion-ilevelopmeiit ol' the perithecia in the Old World is a rijiIoii> 

 liiolouical phenonieiion. tlionuh similar peculiarities exist in regard to 

 other species of I'linu'i in eoiitrasteij regions in our country. 



The plant vario eonsideralily, lait nearly or (piite as niiieli on 

 leaves of Vitls as upon this on the one hand, and Aiiijx-lopnis sjieeies 

 on the other. 'I'lic name most eommonly adojiled is V. s/i/rnh's, I'erk.. 

 from the named liiiiire. without description, in iierkeley's introduction 

 to Cryptoiiiiniic IJofany. lait siilisequently descrilieil in (ireviljea. 

 Prior to the latter. Peck de.sciiiieil l^. Aiii/irlojisli/is. hence this name 

 has lieen used in some cases for the specimens on liotli V/'t/'s and ^liii- 

 pclojiHix since the.se fiiii^i have lieen reco^-nized as the same species. 

 l)Ut there is no reasoiialde doiiht that Schweinit/ had liefore him 

 spi'cimeiis of this same species, and il' so, ids neiiiecte(| name must lie 

 accepted. It siiould lie I'emembei'od tiiat lie worked beloro the era 

 <»f the compound microscope, and his descrijttion is necessarily nicaii'oi'. 

 i>ut it js correct as far as it li'oes. 



r. flexiiosa, IVck. Trans. All.any Inst. VII, p. 1U., 



Ilypopliyllons. Perithecia lar.ii'cd 10-12.") /<). dark.ojiake, lelicii- 

 latlons oltscure: appenda;.a's immeruiis, 40 or moro. ahout oijualinu' the 



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