PART 3, 1912] AECIDIACEAE 



245 



III. Teha amphigenous, scattered irregularly, or occasionally in annular groups. 1.5- 

 2.5 mm. across, roundish or oval, 0.5-1 mm. across, early naked, pulvinate, chocolate- 

 iT^^/o^T ^P^*^^"""^" somewhat noticeable ; teliospores obovoid, broadly ellipsoid or 

 globoid, 20-27 by 24-35 m, usually narrrowed below, obtuse or truncate above ; wall cinna- 

 mon-brown, slightly darker above, moderately thin, 1.5-2 m, thicker at apex. 5-9^, smooth ; 

 pedicel colorless, two to three times length of spore. 



On Polygonaceae ; 



Chorizanthe pungens Benth., California. 



Chorizanthe robusta Parry, California. 



Eriogonum campanulatum Nutt., Colorado, Utah 



Ertogonum cernuum Nutt. , California. 



Eriogonum compositum Dougl., Idaho, Washington. 



Eriogonum croceum Small, Idaho. 



Eriogonum dichoiomum Dougl., Washington. 



Eriogonum dumosum Greene, California. 



Eriogonum effusum Nutt., Colorado, Idaho, Wyoming 



Eriogonum elongatum Benth., California. 



Eriogonum fasciculatum Benth., California. 



Eriogonum flavum Nutt., Colorado, Montana. 



Eriogonum heracleozdes l>iutt. , Idaho, Utah, Washington. 



Eriogonum Kennedyi Porter, Nevada. 



Eriogonum latifolium Smith, California. 



Eriogonum lonchophyllum T. & G., Colorado. 



Eriogonum microthecum Nutt., Montana, Wyoming. 



Eriogonum multiceps Nees, Nebraska. 



Eriogonum nudum Dougl., California. 



Eriogojium nudum paucijlorum S. Wats., California. 



Eriogonum orendense A. Nels., Wyoming. 



Eriogonum ovale Small, Montana. 



Eriogonum parvifohum Smith, California. 



Eriogonum paucijlorum Pursh, Colorado. 



Eriogonum polyanthum Benth., Arizona, Nevada. 



Eriogonum. racemosum Nutt., Arizona, Colorado. 



Eriogonum scoparium Small, Colorado. 



Eriogonum subalpinum. Greene, Colorado. 



Efiogonum umbellalum Torr., Colorado, Montana, Oregon, Utah, Wyoming. 



Eriogonum vimineum Dougl., California, Oregon. 



Eriogonum virgatum Benth., California, Oregon. 

 Type locality : California, on " Gayophytum ramosissim-um^^' error for Eriogonum sp. 

 Distribution : Throughout the Rocky Mountain region of the United States and westward 

 to the Pacific coast. 



Exsiccati: Garrett, Fungi Utah. 12, 13, 120, 147,174, 196; Sydow, Ured. 1756, 1757, 1758; 

 Ellis, N. Am. Fungi 1069 ; Ellis & Ev. N. Am. Fungi 1871, 2232, 2232b ; Ellis & Ev. Fungi Columb. 

 480, 1410, 1693 ; Clements, Crypt. Form. Colo. 530; Barth. Fungi Columb. 2292, 3591; Rab.-Wint. 

 Fungi Eur. 3626; Rab.-Wint.-Paz. Fungi Eur. 3923. 



45. Nigredo Betae (Pers.) Arth. R6sult. Sci. Congr. Bot. 



Vienne 343. 1906. 



Uredo Betae Pers. Syn. Fung. 220. 1801. 



Uredo cincta^ Betae Strauss, Ann. Wett. Ges. 2 : 96. 1810. 



Caeoma Betarum Link, in Willd. Sp. PI. 62 : 11. 1825. 



Uromyces Betae L^v. Ann. Sci. Nat. III. 8 : 375. 1847. 



Trichobasis Betae Lev.; Cooke, Micros. Fungi 209. 1865. 



Aecidium Betae Kiihn, Zeitschr. Landw. Central- Ver. Sachs. 26 : 41. 1869. 



Caeomurus Betae Kuntze, Rev. Gen. 3^ : 449. 1898. 



0. Pycnia amphigenous, gregarious, yellowish becoming brownish, depressed-globoid, 

 128-160 ju in diameter by 80-100 )u high ; ostiolar filaments 35-50^ long. 



1. Aecia amphigenous, gregarious, in crowded or annular groups 3-5 mm. across, 

 short, cupulate, 0.3-0.4 mm. in diameter ; peridium colorless, the margin erose ; peridial cells 

 rhomboidal or rhombic, 26-34 )Lt long, the outer and inner walls of about equal thickness, 

 5-7 ju, inconspicuously striate, the inner wall finely verrucosa ; aeciospores globoid, 19-24 by 

 23-26)Lt; wall colorless, 1.5-2 ju thick, finely verrucose. 



II. Uredinia amphigenous, scattered, rupturing rather early, somewhat pulverulent, 

 cinnamon-brown, ruptured epidermis conspicuous; urediniospores broadly ellipsoid or 

 obovoid, 19-23 by 26-33 m; wall golden-brown, about 2/Lt thick, rather sparsely echinulate 

 with low blunt points, the pores 3 or 4, equatorial. 



III. Telia amphigenous, scattered, rupturing rather early, slightly pulverulent, some- 

 what pulvinate, chestnut-brown, ruptured epidermis conspicuous ; teliospores broadly 



