472 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Hosts: Ranunculus fascicular is, Wise.; R. septentrionalis ,\&., 
Ill., Wise.; Ranunculus sp., Ia. 
This species is distinguished by the hard pustular sori. The 
spores are also rather characteristic because of their thick irregular 
walls. The smut is not uncommon in the Mississippi valley though 
not reported elsewhere as yet. The germination was described by 
DeBary. Literature: 45. 
Entyloma microsporum var. pygmaeum Allesch. 
Entyloma ynicrosporum var. pygmaea Allesch., Bibl. Bot., 8 : 40. 1897. 
Sori on leaves; spores hyaline to yellowish, irregular, oblong, 
spherical, frequently polyhedral, with large oil drops, variable in 
size, 12-18 /x in length. 
Host: Ranunculus pygmaeus, Greenland (type). 
The writer has not seen a specimen of this variety but judging 
from the description it does not differ essentially from the species. 
Its germination has not been reported. 
* * * Spores light colored; produced terminally in the filaments. 
Entyloma Nymphaeae (Cunn.) Setch. 
Rhamphospora Nymphaeae Cunn., Sci. Mem. Med. Off. Arm. Ind., 3 : 32. 
1887. 
Entyloma Nymphaeae Setch., Bot. Gaz., 19 : 189. 1894. 
Entyloma castaliae Holvv., 1 Trans. Wise. Acad. Sci., Arts, Lett., 11 : 174— 
176. 1897. 
Exsiccati: Entyloma castaliae Holw., on Nuphar advena, Syd., Ust., 
277, on Nymphaea tuberosa , Ell. & Ev., Fungi Col., 1487 ; Entyloma 
Nymphaeae (Cunn.) Setch., on Nymphaea reniformis, Seym. & Earle, 
Econ. Fungi Clinton Ust. Supp., C 27, C 28. 
Sori in leaves, forming variable often very irregular areas, usually 
most prominent on under side, yellowish or with age reddish brown, 
scattered or subconfluent; spores hyaline, ovoid to subspherical, 
usually apiculate and with remains of hypha as an appendix at the 
opposite end, smooth or under an immersion very minutely verrucu- 
1 Described by Davis from specimens given this herbarium name by Holway 
in 1885. 
