176 Bulletin 313 



what revolute, lacerate, peridial cells rhomboidal or linear rliom- 

 boidal, somewhat over-lapping, 10-13 fi, broad, by 24-30 /* long, the 

 outer wall moderately thick, 4-5 fi, transversely striate, the inner 

 wall thinner, 2-3 /a, verrucose, aeciospores ellipsoid, 16-20 by 20-26 fi, 

 wall colorless, thin, 1-1.5 /x, minutely and closely verrucose. 



"II. Uredinia amphigenous, scattered, roundish, small about 0.5 

 mm. or less in diameter, soon naked, cinnamon-brown somewhat 

 pulverulent, ruptured epidermis evident ; urediniospores ellipsoid, ob- 

 ovoid, or subglobose, 16-23 by 20-33 fi; wall light golden-brown, 

 rather thin 1-1.5 fi, sharply and sparsely echinulate, the pores 2, 

 rarely 3, equatorial. 



"III. Telia amphigenous, scattered, roundish, about 0.5 in di- 

 ameter, early naked, blackish-brown, somewhat pulverulent, rup- 

 tured epidermis evident ; teliospores broadly ellipsoid or subglobose, 

 20-26 by 24-32 /x, rounded or obtuse above, usually rotmded below; 

 wall dark chestnut-brown, rather thick, 3-3.5 fx with a large hemi- 

 spherical hyaline apiculus above making the wall 6-10 /x thick, 

 smooth or with a few small, sparsely scattered hyaline papillae ; pedi- 

 cel, hyaline, about as long as the spore." In North American Flora, 

 v. 7, p. 257 (1912) as Nigredo appendiculata. 



967. Leaflet of bean showing uredo sori. 968. Uredospores, 1/12. %9. 

 Leaflet showing teleuto sori. 970. Teleutospores, 1/12. 



Uromyces caryophyllinus (Schrank) Winter. — On the leaves 

 of the cultivated carnations. Described by McAlpine as follows : 



"Uredosori amphigenous, dark brown when exposed, but long 

 covered by epidermis, round or oblong, scattered, often confluent up 

 to 3 mm. long. 



"Uredospores roundish or oblong, yellowish-brown to golden- 

 brown, decidedly echinulate, generally 3-4 scattered or nearly equa-- 

 torial germ-spores on one face, 21-34 x 17-28 ix, average 32 x 24 fx. 



"Teleutosori amphigenous, blackish-brown, oblong, confluent in 

 elongated lines, long, covered by ashy epidermis, then margined by 

 the ruptured and ragged cuticle. 



"Teleutospores at first intermixed with uredospores, roimdish, 

 oval or ovate, cinnamon-brown, generally thickened, with broad 

 colorless papilla, average 28 x 20 /* or 22-32 x 17-23 /a; pedicels very 

 deciduous, hyaline, up to 45 jx long." McAlpine, Rusts of Australia, 

 p. 102. 



971. Portion of infected carnation showing sori on stem and leaves. 972. 

 Cross-section of uredo sorus on leaf, 2/3. 973. Uredospore, 1/12. 974. 

 Teleutospores, 1/12. 975. Intercellular mycelium and haustoria, 1/12. 



