8G 



Junipertis Virgtma?m ; and a Roes- 



wzd; on the orchard apple and on I'jrus coronaria appears as com- 

 mon, iiut I do not find any interdependence between ihem. Juni- 

 pers are not indigenous, and great areas, many miles in extent, exist 

 Without a specimen, yet the Eoestelia seems to occur in such places 

 as commonly as^near the affected trees." Prof. W. R. Dudley writes 

 wlc Bloomington, Ind., last spring, the cedar (/. Virgimana) 

 was comparatively abundant both in and around the town, although 

 not a native of the section. I think I never saw the Gymnosporan^ium 

 Xr\T'' ? .^^"".d^"t as on these trees. In the latter pa--t of April, 

 fheh?n ''?''''' '""'"^"^^^''^^^y ^^'^ particularly noticeable, giving 

 hrLnl ^"^ ^.'^""^^ ^'"^ ^^ ^ distance and weighing down the 



ticed ll'.n?^'""'^ ^' '''° ""' '^'^^ ^"^^^^ «f ^'Sht snow might. I no- 



drawn Trl'r^'/r' '%''°'^ ^\ '° ^^^ inferences which can logically be 



of h. H-ff *^/^^^tive abundance and proximity to one another 



TnrtJ Gymnosporangia and Rosteliae. Because one finds, 



he \^Z'a^'^ "^-^t? ^I'^'^'^'Porangium on Juniperus Virginiana in 



^e mmediate neighborhood of apple trees which are attacked by a 

 two n.'' """ P^oof whatever of any genetic connection between the 

 two. One would undoubtedly also find an abundance of Puccinia 



anvTonn.!??^'' ^Y ^^™^^PPl^ trees; and, although no one supposes 

 an^ connection to exist between the Puccinia and Roestclia yet on 



Xr cfs" as tnVr T^""' ^""''A' Y" ^^''^^^ '^ ^ connection'fn the 

 latter case as in the former. On the other hand, however, if we find 



mo 'from'^hT '"?',^' Oy.n^osporangiu., occu;ring in distHcts re- 

 t^ there i.nn'^ ^°™' '' ^"'''^^'^' ''^ ^'^ warranted in inferring 

 some of onr .nr''^'-^f'"/^""'''^°" ^"'^'""^ ^^^^^- ^^''' '^ the case of 

 Eurooe itTs ren?? ? Gymnosporangium, which are found also in 

 frSh^ v.. f/!/- -rT-'^.^V^"-^ occur only at very great distances 

 hZSS.ZfZ r,^^Vf •'^ '^^y ^/^^ ^^^" associated by European 

 case of j^nr^ teleutospore form itself is very abundant. The 

 case ot Pucctma Graminis is in this respect still stronger for alfhn.mh 



wh?ch occTln,''^ ^T.^'^'t '' 'K'""'''' ^'^ s^pfo^sed^^c'diuS 

 r^M fh^r- .1 1 "" ^^^ barberry, is there quite wanting. ' It may be 



^"^l«^"but^S^■^^"•'''"" ^^;'^""^^' " ^^P^^«d by' some ofher 

 ^eaaium but, what it is, is certainly not known, nor even susoected 



growfon fJ'""'"' 'T^' ^'^^-^^ W-/-. Goepper^iZ^ltc^ 

 ZheT.Zff -T' '""^ the aecidial stag^of which if said by Hartig 

 n ^,^//^f ^'"f^^^'"^^^^, which grows on firs. Although not rarf 

 m the Rocky Mountains and westward, thtCafyptosPorai^ certainlv 

 rare near Boston, and I have found it only once on f sfnde n'an of 



amonSt r/.'^'^'^r'-v"^^^^^ ^'^'^ ^^ ^ deep swan p at Newton 



haveTeen ore ent . T°'''^^^ '^^' J^' ^^^''^^^^ ^^/««Lr. could 

 nave been present, as there were no fir trees anywhere to be found • 



anU"e rn^ar Bo7torTh '^^'^ able to detect '^..V^.^ Z^; 



t^lu I "^^^^oston. The species of Uredineae found in the nei^rh 



borhood were Gymnosporanglum Ellisii .nA GymTepfJum^'^^^, 



I 



rc^ :LvxUot (^j^.4^ U^ ^-^t^-wc^ <rfU 



..^> 



C J 



P-^'-Ci^*^ . %^:,^^pjlyu . (I I 'H^rtr 



