Puccinia. 



FUNGI. 363 



152. Puccinia. Pers. Puccinia. 



Sporidia 1 — 2 septate, adnate witli tlie matrix by a filiform 

 peduncle, and crowded into a tubercle, which is at first covered 

 by the epidermis. — Named horn Puccini, a Florentine Professor, 

 firsit applied by jNIicheli to Podisoma Jiiniperi SahincB. 



1. P. Grdminis, Pers (3Iildew); spots pale diffuse, sori linear 

 confluent amphigenous, sporidia at length black. Pers.! Disp. 

 t. 3. /. 3. 3Ioug. 4 Nest. J n. 675. Grev. FL Ed. p. 433.— 

 Uredo Friimenti, Soiv. t. 140. Banhs. Ann. Bot. v. 2, p. b\. 

 with figures by Bauer. Part. v. 2. w. 1 128. — /3. Arundinis, sori 

 broad. Moug. ^ Nest. n. 592. — P. arundinacea, Johnst. Fl. 

 Bene. 2. p. 195. 



On leaves and culms of corn and grasses. — /3. on Reeds. — Most in- 

 jurious to corn. Sporidia in «. clavate, very slightly constricted at the 

 septum ; in /3. more constricted, and furnished with longer stalks. 



2. P. slriola, Lk. (sfreak-lihe Puccinia) ; spots pallid, sori 

 linear crowded distinct amphigenous subconvex, sporidia at 

 length black. Lk. Sp. 2. ^. 67. Desm. ! n. 614.— P. Caricis, 

 Dec. Fl. Fr. 6. p. 60 P. caricina, Grev. Fl. Ed. p. 433. 



On Carices, Junci, Alliti, &c. Very common. — I am not quite con- 

 vinced that the plants on Carices and Junci ought to be considered as 

 identical; in the former tiie sporidia are oblong and slightly constricted, 

 in the latter obovate and not at all constricted. I should prefer uniting 

 the former with P. Grarninis. 



3. P. Aspdragi, Dec. (^Asparagus Puccinia) ; spots none, 

 sori red-brown cauline rarely epiphyllous scattered and crowded 

 ovato-oblong puivinate surrounded by the longitudinally burst 

 epidermis, stem white long filiform, sporidia oblong obtuse con- 

 stricted. Dec. Fl. Fr. 2. p. 595. Moug. S)- Nest.! 7i. 392. 

 Grev. Fl. Ed. p. 429. Dtib. Syji. p. 889. 



On dead stems of Asparagus and Cabbages. Edinburgh, Dr. 

 Grcville. 



4. P. Polggonortim, Lk. (Polggonum Puccinia) ; s])ols yel- 

 lowish, sori minute crowded into orbicular patches nearly plane 

 liypophyllous, sporidia brown black. Lk. Sp.2. p. 69. Joknst. 

 11. Btrw. 2. p. 195. — P. Polifgoni amphibii, Pers. ! Sipi. p. 

 'l-n.^P. Polggoni, Grev. FL Ed. p. 430. 



On various Pithjijima. Very common. — Sporidia obovate-oblong, 

 frc(juently, but nut always, constricted, so that the upper joint is globose. 



5. P. Vagindlium, Lk. (Knot-grass Puccinia); spots none, sori 

 subrotund or oblong hypogenous or cauline convex, at first 

 surrounded by the ruptured epidermis, sporidia brown. Lk. 

 Sp. 2. p. 69.— P. Polggoni avicularifCj Pers. Si/n. p. 227. — P. 

 Avicularifr, drcv. Fl. Ed. p. 429. Joknst. Fl.Ikrw. ± p. 195. 



On Pohigomnn avicuUnr. About lulinburgh. Mts.sra. Ilookir 

 and (ircville. lUrwick. Ih . Jnhnstmt. 



