246 NORTH AMERICAN FLORA [V01.UME 7 



ellipsoid or obovate-ellipsoid, 18-21 by 26-30 ju ; wall dark golden-brown, 1.5-2 ju thick, thicker 

 above, 4-5 m, with a small hyaline papilla over the germ-pore ; pedicel hyaline, shorter than 

 the spore. 



On Chenopodiaceae : 



Beta vulgaris ly., California. 

 Type locality : Europe, on Beta vulgaris. 



Distribution : The southern half of California, only found in the sporophytic phase ; also in 

 Europe, southern Africa, and Australia. 



Illustrations : Beitr. Krypt. Schweiz 22 \ f.9 ; McAlpine, Rusts Austr. pi. H,f. 35 ; pi. 17, 

 f. 148, 149. 



ExsiCCATi ; Ellis & Ev. N. Am. I?nngi2229; Seym. & Earle, Econ. Fungi 448. 



46. Nigredo (?) Celosiae (Dietel & Holway) Arthur. 



Uromyces Celosiae Dietel & Holway; Holway, Bot. Gaz. 31 : 326. 1901. 



O and I. Pycnia and aecia unknown. 



II. Uredinia hypophyllous, scattered, on large irregular areas, sometimes crowded and 

 occasionally confluent, roundish, 0.2-0.5 mm. in diameter, early naked, pulverulent, dark 

 cinnamon -brown, ruptured epidermis conspicuous ; urediniospores broadly ellipsoid, 19-26 

 by 24-32ju; wall cinnamon -brown, 2-3.5)Lt thick, strongly and sparsely echinulate, the 

 pores distinct, 2, equatorial. 



III. Telia hypophyllous, scattered in large irregular areas, often crowded and occasion- 

 ally confluent, roundish or oval, 0.2-0.6 mm. in diameter, rather early naked, pulverulent, 

 chocolate-brown or blackish, ruptured epidermis conspicuous ; teliospores globoid to broadly 

 ellipsoid, 23-29 by 27-34 ju; wall chocolate-brown, thick, 3-5 ju, inconspicuously and closely 

 verrucose, thickened above by a broad pale umbo, 7-9 m thick ; pedicel rather stout, color- 

 less, slightly roughened below, once to twice length of spore. 



Amaranthaceae : 



Iresine latifolia Benth. & Hook., Oaxaca; Guatemala. 



Ire sine paniculata Poir. , Morelos. 



Iresine Pringlei S. Wats., Pueblo. 

 Type locality : Oaxaca, Mexico, on ^^Celosia latifolia, ^^ error for Iresine latifolia. 

 Distribution : Southern Mexico and Guatemala. 

 ExsiCCATi : Sydow, Ured. 1852. 



47. Nigredo caryophyllina (Sclirank.) Arthur. 



Lycoperdon caryophyllinum Schrank, Baier. Fl. 2 : 668. 1789. 



Uredo DianthiV&rs. Syn. Fung. 222. 1801. 



Caeoma Dianthi I,ink, in Willd. Sp. Pl. 62 : 26. 1825. 



Uromyces Dianthi Niessl, Verh. Nat. Ver. Briinn IO2 : 162. 1872. 



Uromyces caryophyllinusWint. in Rab. Krypt. Fl. 1^ : 149. 1881. 



Caeom,urus caryophyllinus Kuntze, Rev. Gen. 3^ : 449. 1898. 



Vredo dianthicola Hariot, Jour, de Bot. 14 ; 116. 1900. 



Aecidium Euphorbiae-Gerardianae Ed. Fisch. Beitr. Krypt. Schweiz 2^ : 530. 1904. 



0. Pycnia hypophyllous, scattered, abundant on the lower leaves, from diffused 

 mycelium, punctiform, conspicuous, honey-yellow becoming brownish, in section globoid, 

 130-160/1 in diameter; ostiolar filaments strongly developed, 40-85 jit long. 



1. Aecia hypophyllous, scattered thickly over the siirface of the upper leaves, from 



diffused mycelium causing a slight general hypertrophy, round or somewhat oval, 0.3-0.5 



mm. across, orange-yellow when fresh ; peridium colorless, short, the margin erect or 



slightly recurved, coarsely erose ; peridial cells in radial section quadratish, 19-25 ju in 



length and breadth, a'butted, with slight overlapping projection at outer edge, the outer 



wall very thick, 7-10 m, flat, transversely striate, smooth but appearing finely punctate, the 



inner wall much thinner, 3-5 )u, projecting in a. half circle, strongly and thickly verrucose ; 



aeciospores angularly globoid, 16-22 jit in diameter; wall nearly or quite colorless, very thin, 



1 ju or less, finely and closely verrucose. 



On Euphorbiaceae : 



Euphorbia Gerardiana Jacq., only in Europe. 



II. Uredinia amphigenous, scattered or often in loose groups, oval or irregular, often 

 confluent, rather large, 0.5-1.5 mm. across, rather tardily naked, pulverulent, dark cinna- 



F 



mon-brown, ruptured epidermis conspicuous ; urediniospores broadly ellipsoid, 20-24 by 

 24-30 m; wall golden-brown, rather thick, 2.5-3 m, closely and strongly echinulate, the 

 pores 3 or 4, equatorial. 



