Parasitic Fungi of New Jersey 155 



UsTiLAGO UTRicuLOSA (Necs.) Tul. — On the inflorescence of 

 Polygonum pennsylvanicum. 



"Sori in ovaries and probably in stamens, protected by floral en- 

 velopes, ovate, about 3-4 mm. in length, forming- a dusty purplish 

 spore-mass ; spores violet, chiefly subspherical or spherical, with 

 prominent winged reticulations (2-4 fi wide by about 1.5 [x deep), 

 chiefly 9-14 fx in diameter,'' North American Flora, v. 7, p. 22 

 (1906). 



895. Infected inflorescence of P. pennsylvanicum. S96. Spores, 1/12. 



UsTiLAGO ZE^ (Beck.) Ung. — On ears, tassel, leaves and stems of 

 com. "Sori on any part of the host, usually prominent, forming ir- 

 regular swellings from a few mm. to over a dm. in diameter, at first 

 protected by a sort of false white membrane composed of plant cells 

 and semi-gelatinized fungous tlnreads, soon rupturing and disclosing 

 a reddish-brown spore-mass ; spores ellipsoidal to spherical or rarely 

 more irregular, prominently tough rather bluntly echinulate, 8-11 /i, 

 the most elongate 15 /a, in length." North American Flora, v. 7, p. 

 15 (1906). 



897. Infected inflorescence of corn. 898. Spores, 1/12. 



Melanopsichium austro-americanum (Speg.) G. Beck. — On 

 stems, leaves and inflorescence of Polygonum pennsylvanicum. "Sori 

 chiefly in the inflorescence, forming more or less irregular lobed 

 masses arising from the fusion of the infected parts, less commonly 

 on the leaves and then smaller, usually prominent, 2 or 3 mm. to 2 

 cm. in length, internally somewhat nodular or tubercular, forming a 

 hard, firmly agglutinated, black, spore mass mixed with plant tissues, 

 spores oblong to cliiefly subspherical, often somewhat irregular, with 

 more or less evident gelatinous envelope, usually rather prominently 

 echinulate, chiefly 10-14 ju,, the most elongate rarely 17 /x in length." 

 North American Flora, v. 7, p. 30 (1906). 



899. Infected inflorescence of P. pennsylvanicum. 900. Infected stem of 

 same. 901. Spores, 1/12. 



SoROSPORiuM ELLisii Wint. — On the inflorescence of Andropogon 

 virginicus. "Sori elongate, including the entire inflorescence or more 

 rarely confined to the individual spikelets, chiefly 1 cm. in length, of- 

 ten hidden by enveloping leaf-sheaths, provided with evident false 

 membrane, within which is the black-brown dusty spore-mass ; spore 

 balls dark-reddish brown, subopaque, rather temporary, oblong to 

 subspherical, chiefly 40-100 ^ in length, spores somewhat irregular, 



