300 BOTANICAL GAZETTE [APRIL 
III. Telia amphigenous and caulicolous, on the leaf blades often 
gregarious or confluent, in groups of o.5-1.5 mm., more often 
scattered, round, o.2-0.5 mm. across, on the stems fusiform, 
1o-30 mm. long; early naked, becoming somewhat pulverulent, 
dark chocolate brown, ruptured epidermis noticeable when epiphyl- 
lous, inconspicuous when hypophyllous; teliospores oblong or 
ellipsoid, often irregular, 20-28 by 30-45 u, somewhat longer and 
narrower in caulicolous sori, 19-26 by 40-58 wu, obtuse or rounded 
above, rounded or narrowed below, slightly or not constricted at 
septum (more frequently so in caulicolous form); wall light chestnut 
brown, minutely verrucose, often appearing smooth, medium thick, 
1.5-3 4, thicker at apex, 5-10 u, concolorous or often slightly 
lighter above; pedicel colorless, slender, once to twice the length 
of the spore, in the caulicolous form usually much longer. 
On Vernonia altissima Nutt. (V. maxima Small), Indiana, Michigan; 
V. Baldwinii Torr. (V. interior Small), Illinois, Kansas, Michigan, Nebraska, 
klahoma; V. crinita Raf., Arkansas, Michigan; V. Ervendbergti Gray, 
San Luis Potosi; V. fasciculata Michx., Illinois, lowa, Michigan, Nebraska, 
North Dakota, Oklahoma, South Dakota: V. gigantea (Walt.) Britt., Texas; 
V. oo Heller, Texas; V. missourica Raf. (V. Drummondit Shuttlw. ); 
Missouri; V. noveboracensis (L.) Willd., ee Illinois, Iowa, North Caro- 
lina; v. pulchella Small, Georgia; V. sp., Virgi 
ype locality: Salem, North Carolina, on Voule: noveboracensis. 
Exsiccati: Sydow Ured. 273, rors; Ellis and Ev. N. A. Fungi 1847, 2988, 
3050; Ellis and Ev. Fungi Columb. 263, 353, 1670, 1774; Barth. Fungi Columb. 
2573, 2979, 3271, 3674, 4276; Barth. N. A. Ured. 60, 70, 578, 873, oh 973; 
Brenckle, ungi Dakot. 369; Seym. and Earle, Econ. Fungi Suppl. B 2 
is very common species is apparently confined to the United saad: 
and the only one so far recorded north of Mexico. The name first proposed 
by SCHWEINITZ was based on collections made at Salem, North Carolina, 
Chenopodium.” - In his later publication he cites it as occurring in Pennsylvania 
aa oracensis. An examination of the material in the Schweinitz 
collection at the Philadelphia Academy of Science made by ARTHUR, shows 
that there are three packets, containing in the aggregate 9 pieces, of similar 
stems bearing large sori up to 3cm. long. The original packet rns « P. bullata 
LvS. Salem and Beth. in caulibus varies.” The stems all appear to be of 
Vernonia, and the rust when examined microscopically does not differ from 
similar material on Vernonia stems (now interpreted as V. altissima) collected 
by UNDERWoop at Fern, Putnam County, Indiana, and distributed in Ellis 
and Ev. N. A. Fungi (2988) and other exsiccati under the name P. Vernoniae 
° 
3 
a 
> 
