DESCRIPTION OF AMERICAN UREDINE/E. 47- 



34-40,7; pedicel h\aliiie. fraoile, i to i^i the lennth of the 

 spore. Plate 1., Fi*;". 5- 



There is no sub-hyaline papilla as given in the original 

 description, but the apex is the same color as the spore. 



Exsic. Ellis, N. A. F. 1463, on Ileuchcra cylindrica (Wash- 

 ington). Also reported to occur on Milclla lutda. Lake Nipi- 

 gon, Canada. 



6. PucciNiA iiEUCiiER.'E {^ScJiiu.^ Dict. (^1891.) Bcr. d. 

 deutsch bot. Ges. 9, p. 42. 

 6a. On JMitella diphyUa L., Decorah, la.. Ilolzvay. 

 6b. On MitcIIa iiitda L., Syracuse, N. Y., Undcrivood. 



Ork;. Descr. "479-21. Ileuchera; Sz. U. orbicularis maculae lutes- 

 centi insidens, peridiis subconcentricis, densis nigro-spadiceis, pul- 

 vere nigro-fusco. Passim in foliis HeuchetcE americanre et villo- 

 sse. Peridia primum clausa, demum pulverem spargentia minuta. 

 Affinis U. anemones." 



Amphigenous. Spots small, distinct, reddish brown; sori 

 scattered, circular, prominent, on the petioles more or less 

 elongated and sometimes confluent, chestnut brown; spores 

 elliptical, constricted slightly at the septum, vertex much 

 thickened, rounded or prominently pointed, base mostly ob- 

 tusely rounded, epispore rather thin, perfectly smooth, 12-18," 

 by 24-36/^ ; pedicel nearly hyaline, very slender, once to twice 

 the length of the spore. Plate I., Figs. 6a, 6b. 

 Spores are often quite irregular in shape. 

 The authority for this name is the comparison by Wm. C. 

 Stevenson, Jr., of the specimens in N. A. F. 1049. o" TiarcIIa 

 cordifolia L. with the original specimens of IJrcdo ]icucJic)\c in 

 Herb. Schw. See the label in N. A. F. 



Syn : Uredo hciichcrcc Schw. (1822. Syn. Fung. Car., p. 71.) 

 Piiccinia tiarclhc B. and C. (1874. Grevillea, 3. p. ^}^.) 

 Pticc/ii/a sprcta Pk. (1878. 29th Rep., p. 67. ) 

 Exsic. Sydow: Uredineen, 338. Ellis, N. A. F. 1049. 1464. 

 From the Eastern States west to Minn. 



Reported on Hcnchcra anicricaiia. If. villosa. MitcUa di- 

 pliylla, ]\f. mida. TiarcUa cordifolia. 



