518 NORTH AMERICAN FLORA [VoLuME 7 
III. Telia hypophyllous, occasionally sparingly epiphyllous, numerous, evenly scattered 
over large areas, or sometimes in groups around the pycnia, roundish, 0.2~-0.6 mm. across, 
early naked by a central pore, pulverulent, chestnut-brown, surrounding epidermis crateri- 
form, conspicuous; teliospores globoid or ellipsoid, 15-22 by 19-30 p, rounded at both ends; 
wall cinnamon-brown, 1~2 » thick, with a low, subhyaline umbo over the apical pore, finely 
verrucose, the markings often in irregular-longitudinal lines; pedicel colorless, deciduous. 
This species is correlated with Pucciniola codrdinata Arth., a long-cycled, autoecious 
species, but without uredinia, and with Nigredo occidentalis (Dietel) Arth., a long-cycled, 
heteroecious species. The. morphological characters of corresponding stages in the three 
species are nearly or quite identical, and together with the correspondence in hosts doubtless 
indicate a common origin. 
On EvPHORBIACEAE: 
Chamaesyce serpens (H.B.K.) Small (Euphorbia serpens H.B.K.), California. 
saga Ved chamaesula (Boiss.) Wooton & Standley (Euphorbia chamaesula Boiss.), New 
exico, 
Tithymalus montanus (Engelm.) Small (Euphorbia montana Engelm.), Colorado, Utah, 
‘yoming. 
ae ered Palmeri (Engelm.) Arth. (Euphorbia Palmeri Engelm.), California; Lower 
alifornia. 
Tithymalus robustus (Engelm.) Small (Euphorbia montana robusta Engelm.), Arizona, 
Colorado, Montana, Utah, Wyoming. 
TYPE LocALIty: Colorado, on Euphorbia montana. 
DISTRIBUTION: From Wyoming to New Mexico, southern California, and Lower California. 
Exsiccatr: Barth. N. Am. Ured. 499, 1899, 2500; Ellis & Ev. Fungi Columb. 1069; Ellis 
& Ev. N. Am. Fungi 2230; Garrett, Fungi Utah. 97. 
6. Teleutospora Myrsines (Dietel) Arthur & Bisby. 
Uromyces Myrsines Dietel, Hedwigia 36:26. 1897. 
Uromyces Usterianus Dietel, Ann. Myc. 6:96. My 1908. 
Uvromyces Rhapaneae P. Henn. Hedwigia 48:1. S$ 1908. 
Haplotelium Myrsines Sydow, Ann. Myc. 20: 124. 1922, 
O. Pycnia unknown. 
Ill. Telia hypophyllous, crowded upon reddish or blackish spots 2-5 mm. in diameter, 
round, 0.1-0.2 mm. in diameter, often confluent, early naked, pulvinate, light chocolate- 
brown, ruptured epidermis inconspicuous; teliospores oblong or oblong-ellipsoid, 13-16 by 
27-39 », rounded or acute above, narrowed below; wall pale golden-brown, rather thin, 
1-2 p, thickened at apex, 4-8 yu, smooth; pedicel colorless, short. 
On MYyRSINACEAE: 
. Ardisia compressa H.B.K., Costa Rica. 
TYPE LOCALITY: Rio de Janeiro, Brazil, on Myrsine sp. 
DistrRiputTIon: Costa Rica; also in South America. 
7. Teleutospora nevadensis (Hark.) Arthur & Bisby. 
Uromyces nevadensis Hark. Bull. Calif. Acad. 1:36. 1884. 
Caeomurus nevadensis Kuntze, Rev. Gen. 33: 450. 1898. 
O. Pycnia unknown. : 
Ill. Telia amphigenous, circinating in groups 2-5 mm. across or somewhat scattered, 
round or oval, 0.2-1 mm. across, early naked, pulvinate, becoming somewhat pulverulent, 
chestnut-brown, ruptured epidermis conspicuous; teliospores oblong, oblong-obovoid, or 
ellipsoid, 19-27 by 29-47 », rounded at apex, rounded or narrowed toward base; wall cinna- 
mon-brown, lighter or colorless at apex, moderately thick, 1.5—-2.5 », thickened at apex, 5-7 nu, 
moderately and rather finely verrucose; pedicel colorless, fragile. 
ON PRIMULACEAE: . : 
Primula suffrutescens A. Gray, California, Nevada. 
‘Type Locality: Lake Tahoe, Nevada, on Primula suffrutescens. 
DistTRIBUTION: Mountainous region of central California, and adjacent Nevada. 
8. Teleutospora Solidaginis (Sommerf.) Arth. & Bisby; Arth. 
Bull. Torrey Club 48: 39. 1921. 
Cacoma Solidaginis Sommerf. Suppl. Fl. Lapp. 234. 1826. 
Uromyces Solidaginis Niess|, Verh. Nat.-Ver. Briinn 10: 163. 1872. 
Caeomurus Solidaginis Kuntze, Rev. Gen. 33: 450. 1898 
Telospora Solidaginis Arth. Résult. Sci. Congr. Bot. Vienne 346. 1906. 
Haplotelium Solidaginis Sydow, Ann. Myc. 20: 124. 1922. 
O. Pycnia not found; probably wanting. 
