446 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Tuburcinia Trientalis B. & Br. 
Tuburcinia Trientalis B. & Br., Ann. Mag. Nat. Hist., n, 5 : 464. 1850. 
Polycystis opaca Strauss, Sturm’s Deutsch. FI., hi, 34 : 47. 1853. p . p . 
Ascomyces Trientalis Berk., Outl. Brit. Fungi, 376. 1860. [Conidial stage]. 
Sorosporium Trientalis Wor., Fisch. de Waldh. Aper$. Syst. Ust.,°32. 
1877. 
Sorosporium Paridis Wint., Rab. Krypt. FI., I 1 : 102. 1884. p. p. 
Sori on leaves, petioles and stems, variable, often pustular, on 
stems frequently forming areas of considerable extent, sometimes 
erumpent; spore balls reddish brown, irregular, oblong to sub- 
spheiical, firm, usually with little evidence of sterile envelope, 
composed of 10 to many spores, 45—100 p in length; spores reddish 
biown, oblong to polyhedral, smooth, 14—22 p in length; conidial 
stage forming a dense, white, epiphyllous coating usually over 
entire leaf, with hyaline, thin walled, oblong to ovate conidia about 
11-14 p x 5-7 p. 
Host: Trientalis Europaea , Alaska. 
T his species has been reported by Harkness from Alaska from a 
collection made by Kellogg. It is probably more common in north¬ 
ern regions than this single collection would indicate. Lately there 
has been a movement to separate into species the forms on different 
hosts that have usually been included under this species. Vester- 
gien lias described Tuburcinia Earidis as distinct and Komarov 
has made Tuburcinia Clintoniae a new species. Woronin 
described the germination of Tuburcinia Trientalis . Literature : 
203. 
Urocystis Rab. 
Herb. Yiv. Myc., ii, 393. 1856. 
(Polycystis Lev., 1 Ann. Sci. Nat., Bot., in, 5 : 269. 1846.) 
Type : Urocystis occulta (Wallr.) Rab. 
Host: Secale cereale. Eur. 
Sori usually in the leaves or stems, occasionally in other parts, 
producing dark colored usually dusty spore masses / spore balls 
permanent , composed of an enveloping cortex of tinted sterile cells 
♦ 
According to Rabenhorst this was already the name of an algal genus. 
