452 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Urocystis Colchici (Schl.) Rab. 
Caeoma Colchici Schl., Linnaea, 1 : 241. 1826. 
Sporisorium Colchici Lib., PI. Crypt. Ard., n. 194. 1832. 
Credo Colchici Lk., Handb., 3: 435. 1833. 
Erysibe arillatah Colchici Wallr., FI. Crypt. Germ., 2 : 211. 1833. 
Polycystis pompholygodes Lev., Ann. Sci. Nat., Bot., hi, 5 : 270. 1846. 
p.p. 
Polycystis Colchici Strauss, Sturm’s Deutsch. FI., hi, 34, 11:45. 1853. 
Urocystis Colchici Rab., Fungi Eur., 396. 1861. 
Soii in leaves forming slightly elevated areas of varying size and 
shape, showing through on both sides, at first covered by epidermis 
and lead colored but eventually rupturing this and disclosing granu¬ 
lar reddish black spore mass; spore balls dark reddish brown, con¬ 
sisting of 1-3 or rarely 4 spores surrounded rather completely by a 
cortex of tinted, thick walled ovoid to subspherical sterile cells (7- 
13 /*), 20-40 fx in length; spores medium dark reddish brown, irreg¬ 
ular oblong to ovoid or subspherical, flattened where in contact 12- 
20 /x in length. 
Host: P olygonatum giganteum , la. 
Apparently this is a rare species in this country. In the prelim¬ 
inary paper it was placed under Tuburcinia Clintoniae as the speci¬ 
mens examined on Streptopus and Smilacina proved to be that. 
Since then the writer is indebted to Dr. Trelease for an examination 
of the Holway specimen in the Missouri botanical garden and it 
proves to be Urocystis Colchici as first reported. The above 
description is based chiefly on this specimen which seems to have 
spoies and spore balls that average a trifle larger than the European 
specimens on Colchicum autumnale. The species is closely related 
to Urocystis magica, on Allium sps., of Europe but differs in often 
having two or three spores in the balls, while that species usually 
has only one. Literature : 142, 169, 198. 
Urocystis occulta (Wallr.) Rab. 
Erysibe occulta Wallr., FI. Crypt. Germ., 2 : 212. 1833. 
Uredo parallela Berk., Eng. FI., 5 2 : 375. 1836. 
Uredo occulta Rab., Krypt. FI., 1 : 5. 1844. 
Polycystis pompholygodes Lev., Ann. Sci. Nat., Bot., in, 5:270. 1846 
p. p. 
Polycystis parallela B. & Br., Ann. Mag. Nat. Hist., ii, 5 : 464. 1850. 
p.p. 
