Long: Two New Species of Rusts 



283 



III. Telia amphigenous but mainly epiphylloiis, those on lower 

 surface usually opposite corresponding telia on upper surface, 

 more or less circular to ellipsoid, often confluent, 0.5 to 4 mm. in 

 diameter, blackish-brown, pulverulent, ruptured epidermis rather 

 inconspicuous; teliospores ellipsoid to ellipsoid-ovoid, acuminate, 

 rounded at base, 25-40 X 50-75 fJ^, not constricted at septa ; walls 

 laminate, the inner layer firm, dark-brown, 3-4 /x thick, the 

 pores 3 or 4 in each cell, lateral and opposite, the outer layer 

 gelatinous, pale amber-colored at apex, remainder of layer color- 

 less, 4-7 /A thick, sparsely and evenly verrucose; pedicel 50-100 /x 

 long, 10-12 II thick near spore, colorless, except part at base 

 which is amber-colored for about 10 /x where it broadens out into 

 an ovoid to ellipsoid, hyaline, solid bulb 20-30 /x wide by 25-40 /x 

 long, then contracts into normal size and shape, pedicel down to 

 and including bulb solid or nearly so, below bulb hollow but 

 with thick walls, outer layers of bulb rapidly swelling in water 

 and bursting. Spores often deciduous just below bulb even be- 

 fore being wet; portion of pedicel below bulb not gelatinous nor 

 swelling in water. 



On Fabaceae. Type collected on Coursetia glandiilosa Gray 

 in Sabina Canyon, 5000-7000 feet elevation, Santa Catalina 

 Mountains, Arizona, October 15, 191 1, by Long & Hedgcock. It 

 was first found at an elevation of about 7000 feet and was 

 fairly common on this host along the south trail down to the 

 foot of the mountain in the canyon. The writer is indebted to 

 Prof. J. J. Thornber for the identification of the host. 



Peridermium inconspicuum sp. nov. 



0. Pycnia chiefly hypophyllous, sparse in material at hand, 

 low, conoidal, subcorticular, dehiscent by a longitudinal slit, 

 0.2-0.3 mm. broad, 0.3-0.7 mm. long, 85-120 /x high. 



1. Aecia from a limited mycelium, amphigenous, one to several 

 on slightly discolored spots occupying part of leaf, erumpent 

 from a narrow slit, flattened laterally, 0.3-0.7 mm. long by 0.3- 

 0.9 mm. high, rupturing irregularly, peridium colorless, very 

 fragile, cells overlapping, oblong-lanceolate to oblong, 19-26 /x 

 wide by 32-55 /x long, average size for ten cells 20 X 37 /-i, outer 

 wall about 3/x thick, minutely verrucose, inner wall 5-8 /x thick, 

 closely verrucose, with rather prominent papillae. Aeciospores 

 ellipsoid to spheroid 16-18 X 22-30 /x, average size for ten spores 

 16.7 X 25 /X, walls colorless, thin, 1-2 /x, minutely verrucose, warts 

 often in irregular groups with clear areas between. 



