206 Illinois State Laboratory of Natural History. 
tuberculate, 24 by 65-77 »; pedicel about one and a half times 
the length of the spore, mostly hyaline, swollen, and elongate- 
elliptical from above the middle downward. 
Puccinia mucronata. Crowded, black, spores pediceled, cylindrical, 
mucronate. Var. Rosa. Spores somewhat swollen, obtuse, parasitic on 
Uredo Rosw.—-Persoon, Syn. Fung., p. 230. 
On roses: Jackson, April 28, 4376, I.; Pulaski, May 4, 
4486, I., 4487, I., May 9, 4580, Nov. 4, 2247; Johnson, May 12, 
4639, I., 4640, L., 4641, I., May 13, 4671, I., May 16, 4706, L; 
McLean, May 20, 4725, I,, May 25, 4778, I., May 29, 4813, I.; 
Champaign, June 8, 4917, L., June 10, 4941, T., 4958, IL., July 
11, 6494, I., IT.. IIT.; LaSalle, June 15, 5000, L., June, 21, 5256, 
T.; McHenry, Aug. 20, 1159, IL, IIL, Aug. 26, 1317, UL., IIL., 
Aug. 27, 1842, Aug. 31, 1894, Sept. 1, 1416, IL, ITI.; Lee, Sept. 
8, 5713, IL, UL; Stephenson, Sept. 18, 5825, IL., ILL.; JoDa- 
viess, Sept. 19, 5997, IL, III.; Ogle, Sept. 23, 6131, I; Rock 
Island, Sept. 27, 1683; Henry, Sept. 28, 1718; Union, Oct. 21, 
1909, Oct. 29, 2121, Oct. 31, 21385, Nov. 3, 2197. 
Persoon’s name (Disp. Meth. [1797] p. 38) for this plant 
is Puccinia mucronata var. Rose. As the other variety has 
been given another name, this should bear the name of the 
species rather than of the variety. Link introduced (Spec. 
Plant. II. [1824-25] p. 84) the genus Phragmidium, in which 
this species is included, hence Ph. mucronatum, Lk., is often 
written. The supposed xcidioform described above, referred to 
under Ph. speciosum, sometimes occurs in midsummer at the 
same time on the leaves with the uredo and teleutospores. 
The paraphyses are, identical in the forms I. and IT., and per- 
sist with the teleutoform. 
Ph. speciosum, Fries. 
IJ. On the stems, and less commonly on the petioles, 
forming swollen, distorted areas of more or less extent. Sori 
irregularly confluent, grayish-black, on year-old stems crust- 
like; spores cylindrical-oblong, about five to seven celled, somie- 
times less, scarcely or not at all constricted at the septum, ends 
rounded, apex mucronate, smooth, almost black. 30 by 60-90 p: 
pedicel hyaline below, tinted above, tapering downward, very 
long, attaining seven or more times the length of the spore. 
