120 Journal of Mycology [Vol. 13 



"Pycnia and aecia unknown. Uredinia with peridium, cen- 

 trally dehiscent, urediniospores borne singly on pedicels, wall 

 nearly colorless, echinulate, pores obscure, contents colored. Telia 

 with spores united into a short column, or globoid mass, arising 

 at first from bed of the uredinia, waxy ; teliospores one-celled, 

 wall smooth, nearly or quite colorless." 



[ Aecidiomycetae. ] 



Chnoopsora Diet. n. g. Uredinales. Annales Mycologici, 

 4 :423. 1906. 



"Pycnidiis depressis, sub epidermide plantae nutricis im- 

 mersis. Aecidiis epidermidem perrumpentibus irregularibus sine 

 peridio ; aecidiosporis catenulatis. Soris telutosporiferis cera- 

 ceis crustaceis, sub epidermide erumpentibus nudis ; telutosporis 

 unilocularibus, rarius, septo transverso vel obliquo divisis, non 

 omnibus in eodem soro simul muturantibus, sed posterioribus 

 inter prius formatas se immittentibus, maturatis promycelio qua- 

 driloculari mox germinantibus." 



[ Aecidiomycetae. ] 



CiONOTHRix Arthur, n. g. Uredinaceae in Underwood and 

 Britton, North .Ajnerican Flora, 7:124. 1907. 



"Cycle of development includes only pycnia and telia, both 

 subepidermal. 



"Pycnia deep-seated, flask-shaped, with ostiolar filaments. 



"Telia erumpent, the catenulate spores adhering to form a 

 filiform column, horny when dry. Teliospores ovoid, one-celled; 

 wall slightly colored, thin, smooth." 



[ Aecidiomycetae. ] 



Cystingophora Arthur, n. g. Aecidiaceae. In Underwood 

 and Britton, North American Flora, 7:131. 1907. 



"Cycle of development includes pycnia, aecia and telia, with 

 distinct alternating phases ; autoecious. Pycnia subcuticular, 

 other sori subepidermal. 



"Pycnia low-hemispherical; hymenium flat; ostiolar fila- 

 ments wanting. 



"Aecia erumpent, cylindrical. Peridium dehiscent at apex, 

 margin erect. Aeciospores ovoid ; wall colored, finely verrucose. 



"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." 



[ Aecidiomycetae. ] 

 Dendroecia Arthur, n. g. Aecidiaceae. Resultats scient- 

 ifiques du Congres international de Botanique Wien, 1905 :340. 

 1906. 



"Pyknien subkutikular ; Telien subkutikular oder subepi- 

 dermal, Teliosporen in zusammengesetzten Kopfen, die Cysten 

 tragen." 



