DESCRIPTION Ol- AMICRICAN IREDJNE^. .- 



2. PucciNiA ciRC.'!-:.-E Pcis. (1797. Disp. Metli., p. 39.) 

 2a. On C/rC(('(i Iii/c//ciiui L., Decorah, la.. Hulzcay. 



2b. On Circd'a alpiua L., Ann Arbor, Mich., ArlJuir. 



Okk;. :)ksck. "R. CirciUiu, cespitosa, globosa dilute batlia, — clavulis ovato- 

 acLiininatis. tab. III. fig. 4. [In fol. Circ. liitet.]" 



Spots definite, purple or brown; sori of two kinds; those 

 formed early in the season, tirm, round, pulvinate, at first yel- 

 lowish, then brownish; those formed later (particularly on 

 the stems and midribs) large, dark-brown, elongated. Spores 

 of both similar in form, but in the former pale 3-ellowish, with 

 a thin membrane, germinating at once; in the latter, dark 

 brown, with a thick membrane, germinating only in the 

 spring. Spores oblong or fusiform, with thick 4-6// conical 

 apices, slightl}- constricted, narrowed toward the pedicel; 10-15 

 by 23-40/^ ; pedicel hyaline i to i J-< the length of the spore. 

 Plate I., Figs. 2a, 2b. 



Burrill gives the length of the spores up to 66 n, but we 

 find none over 40//. mostly 28—32./;. 



Europe; N. Am. On Circcva -pacifca Asch. & Mag., Cal. 

 and Wash. 



3. PucciNiA LOBEi.i.^: GcT. (1873. ^^11. Buffalo Soc. Nat. 



Science, Vol. L, p. 68.) On Lobelia syfhUitica L,. 

 Decorah, la., Jlolzi'ciy. 



Oru;. descr. "Sori minute, scattered or confluent, tawny brown, spores 

 oblong-elliptical, slightly constricted at the septum, and easily 

 separating into two parts, pale, .0013 — .0016 in. long; pedicel short 

 or obsolete. Lower leaves of Lobelia syphilitica. Poughkeepsie. 

 Gerard." 



Sori small, scattered or irregularly and rather loosely clus- 

 tered, cinnamon brown; spores very deeply constricted, frag- 

 ile, segment equal, or the lower narrower, 15-18H by 30-40 /,; 

 pedicel very fragile, shorter than the spore. 



Plate I.. Fig. 3. 



Exsic. N. A. F. 253. 



N. Y., Ind., Wis., la.. Neb. 



Syn: P. microspcnua B. & C (Grevillea 3, 55.) 



