524 NORTH AMERICAN FLORA [VoLuME 7 
1. Micropuccinia tumamocensis (Arth.) Arthur & Jackson. 
Puccinia tumamocensis Arth. Bull. Torrey Club 42: 589. 1915. 
O. Pyenia hypophyllous, in small groups, surrounded by the telia, honey-yellow, globose, 
130-190 » in diameter, deep-seated; ostiolar filaments short, 30-40 u long. 
III. Telia hypophylious, closely associated in elliptic groups 3-10 mm. long, surrounding 
the pycnia, often confluent, elliptic, 1-2 mm. long, becoming naked by the rupture of the 
epidermis which remains attached in shreds, pulverulent, blackish, prominent; teliospores 
broadly ellipsoid, 32-42 by 48-61 u, rounded at both ends, slightly constricted at septum; wall 
3-5 w thick, dark chestnut- or blackish-brown, sparsely and very conspicuously and irregularly 
tuberculate, the pore of lower cell midway between pedicel and septum; pedicel colorless, 
fragile, short. 
This species is correlated with Dicacoma nodosum (Ellis & Hark.) Kuntze and Allodus 
Carnegiana (Arth.) Orton. The morphological characters of like stages in the three species 
are similar or identical and together with the correspondence in hosts doubtless indicate a 
common origin. 
Ow Liniacear: 
Dipterostemon pauciflorus (Torr.) Rydb. (Brodiaea capitata poucifiora Torr., B. pauciflora 
Standley), Arizona. 
TYPE LocaLity: Tumamoc Hill, Tucson, Arizona, on Brodiaea capitata pauciflora. 
DISTRIBUTION: Known only from the type locality. 
2. Micropuccinia Moreniana (Dudley & Thompson) 
Arthur & Jackson. 
Puccinia Moreniana Dudley & ‘Thompson, Jour. Myc. 10: 53. 1904. 
Allodus Moreniana Orton, Mem. N. Y. Bot. Gard. 6: 182. 1916. 
O. Pycnia unknown. 
III. Telia chiefly hypophyllous, scattered or sometimes grouped, oval or oblong, 0.5-2 
mm. wide by 1-5 mm. long, tardily naked; dark cinnamon-brown, slightly pulverulent, rup- 
tured epidermis conspicuous; teliospores broadly ellipsoid, 20-24 by 33-50 pn, the cells equal 
in size and shape, rounded at both ends, moderately constricted at septum; wall light cin- 
namon-brown, about 2 » thick, uniform, finely and inconspicuously striate with longitudinal 
rows of minute papillae; pedicel colorless, delicate, about length of spore. 
This species is correlated with Dicaeoma Pattersonianum (Arth.) Arth. & Fromme, The 
telia of the two species possess common morphological characters, while the host of this species 
is doubtless the same or closely related to the probable aecial host of D. Paitersonianum, 
the latter having been located with much certainty but not proven by cultures. 
On LILIACEAE: 
Dipterostemon capitatus (Benth.) Rydb. (Brodiaea capitata Benth.), California. 
TYPE LOCALITY: Searsville Lake [San Mateo county], California, on Brodiaea ceapitata. 
DISTRIBUTION: Known only from the type locality. 
ILLUSTRATIONS: Holway, N. Am. Ured. 1: #1. 8, f. 35; Proc. Ind. Acad. Sci. 1921: pl. 1, f. B. 
3. Micropuccinia mesomajalis (Berk. & Curt.) Arth. & Jackson; 
Arth. Bull. Torrey Club 48: 41. 1921. 
Puccinia mesomajalis Berk. & Curt.; Peck, Ann. Rep. N. Y. State Mus. 25: 111. 1873. 
Puccinia mesomegala Berk. & Curt. Grevillea 3:52. 1874. 
Dicagoma mesomegalum Kuntze, Rev. Gen. 33: 469. 1898. 
Dasyspora mesomegala Arth. Résult. Sci. Congr. Bot. Vienne 347. 1906. 
O. Pyecnia unknown. 
III. Telia amphigenous, crowded and circinating upon yellowsh spots 5-15 mm. across, 
round, minute, 0.1-0.5 mm. in diameter, somewhat tardily naked, pulverulent, dark cinnamon- 
brown, ruptured epidermis conspicuous; teliospores narrowly ellipsoid or oblong, 15-24 by 
26-40 », rqunded or somewhat narrowed above and below, slightly constricted at septum; 
wall golden- or cinnamon-brown, 1.5—-2.5 « thick, thickened over the pores into a small colorless 
papilla, 3-5 u, very closely and finely verrucose, usually appearing smooth in water; pedicel 
colorless, fragile, short. 
