130 NORTH AMERICAN FLORA [VoLuME 7 
Life-cycle with all spore-forms. 27. ERIOSPORANGIUM. 
Life-cycle with pycnia, uredinia and telia. 28. ARGOTELIUM. 
Life-cycle with pycnia and telia. 29, POLIOMA. 
Teliospores colored ; aecia definite, usually with peridium. 
Life-cycle with all spore-forms. 
Teliospores one-celled, 30. NIGREDO. 
Teliospores two-celled. 31, DICAEOMA. 
Life-cycle with pycnia, aecia and telia. 
Teliospores one-celled. 32. UROMYCOPSIS. 
Teliospores two-celled. 33, ALLODUS. 
Life-cycle with pycnia, uredinia and telia. 
Teliospores one-celled. 34. KLEBAHNIA. 
Teliospores two-celled. 35. BULLARIA. 
Life-cycle with pycnia and telia. 
Teliospores one-celled. 36. TELOSPORA. 
Teliospores two-celled. 37. DASYSPORA. 
1. NEORAVENELIA Long, Bot. Gaz. 35: 131. pl. 3, f. 24. 1903. 
Cycle of development includes pycnia, aecia, uredinia and telia, showing alternating 
phases ; autoecious. Pycnia subcuticular, other sori subepidermal. 
Pycnia depressed-conical. 
Aecia erumpent, without peridium. Aeciospores catenulate, oblong; wall colored, 
closely verrucose. 
Uredinia erumpent, definite, without peridium. Urediniospores borne singly on pedi- 
cels, with or without paraphyses intermixed, ovoid or somewhat fusiform; wall colored, 
echinulate or verrucose, pores equatorial. 
Telia erumpent, definite. Teliospores fascicled on compound stalks, forming heads 
bordered by hyaline cysts, each spore one- or two-celled ; wall colored, smooth or verrucose. 
Type species, Ravenelia Holwayi Dietel (on Prosopis julifiora). 
1. Neoravenelia Holwayi (Dietel) Long, Bot. Gaz. 35: 131. 1903. 
Ravenelia Holwayi Dietel, Hedwigia 33: 61. 1894. 
QO. Pycnia amphigenous, punctiform, gregarious, preceding or accompanying the 
aecia, dark golden-brown, subcuticular, hemispherical or rounded-conical, 50-80 wide, 
25-40 u high. 
I. Aecia amphigenous, crowded on hypertrophied areas, irregularly oblong, 1-3 mm. 
long, subepidermal, soon naked, pulverulent, dull-brown or ochraceous, ruptured epidermis 
conspicuous ; peridium wanting ; aeciospores oblong or linear-oblong, angular and irregular, 
13-21 by 24-42 #; wall golden-brown, thick, 2-3.5, evenly and closely verrucose, pores 4, 
equatorial. 
Il. Uredinia amphigenous, round or oblong, soon naked, subepidermal, cinnamon- 
brown, or chestnut-brown when the paraphyses are numerous, pulverulent, ruptured 
epidermis conspicuous ; paraphyses intermixed with the spores, capitate, 20-27 by 30-50 4, 
smooth, heads in part or wholly chestnut-brown, often very dark, wall thick, 5-104, stipe 
pale, nearly or quite solid; urediniospores obovate-fusiform or oval, 15-19 by 24-42 4; wall 
golden-brown, thick, 2.5-4 w, apex thicker, 4-7, often acute, evenly and sparsely echinu- 
Jate-verrucose, pores 4, equatorial. 
Ill. Telia amphigenous, round or oblong, large, 1-2 mm. long, gregarious, often cir- 
cinating, subepidermal, blackish, shining, ruptured epidermis conspicuous; paraphyses 
none; teliospore-heads dark chestnut-brown, opaque, often paler beneath, 7-10 cells across, 
65-125 # in diameter, smooth ; cysts 15-20, globose, pendent from beneath the whole head, 
not united to one another ; pedicel colorless, short, deciduous. 
7 Dyosopts julzfiora (Sw.) DC., California, Texas. oe 
TypE LOCALITY : San Bernardino, California, on Prosopis juliflora, 
DISTRIBUTION : Texas to southern California. 
ILLUSTRATIONS: Long, é. ¢. pl. 3, Sj. 24; Hedwigia 33: p1.5, f. 26. 
