NEW CALIFORNIAN UREDINE-E. 129 



The teleutospores germinate readily after ripening. They 

 are accompanied by spermogonia uniformly scattered over 

 the upper surfaces of the leaves. By this peculiarity Pucctnia 

 palefaciens differs from the similar Puccinia Holboellii 

 (Horn em.) Eostr. In this species, moreover, the sori are 

 greater, more pulvinate and dark brown, nearly black, apart 

 from some difference in the form of the spores. The true 

 Puccinia Holboellii^ as a comparison with authentic speci- 

 mens from Greenland has proved, has been found in Califor- 

 nia by Mr, S. B. Parish on the same host plant near San 



Bernardino. 



Mr 



^cidiiim 



to the Puccinia Holboellii, The peridia are cylindrical, 

 about 1 mm. long, erect, citrine, opening at the summit with 

 a simple fissure. The aecidospores are from nearly spherical 

 to oblong and measure 20 — 27x16 — 21 jx. Their membranes 

 are minutely verrucose, colorless, the plasmatic contents are 

 in fresh spores lemon-colored. We have not named this 

 ^cidium because it is probably connected with Puccinia 

 Holboellii, It may be suitable to remark that the 

 Holboellii^ Hornem., is not identical with this ^c 

 is not at all an JEcidiiim, but is, as Rostrup* lu 



^c 



strated, the teleutospore-form of Puccinia Holboellii^ Eostr. 



Another ^cidiiim yet undescribed (^ecidium Clarkife, 

 D. & H. in litt.) occurring on Clarkice rhomboidea (Falcon 

 Valley, Wash., leg. Suksdorf ) and Zauschneria Californica 

 (Berkeley, Calif., leg. Blasdale) is apparently the secidial 

 stage of Puccinia ClarkicBy Pk., and may be described as 

 follows : 



Pseudoperidia scattered almost over the whole under 

 surface of the leaves, flat, with a recurved, finely denticulate 

 margin. Spores orange yellow, subglobose or elliptical or 

 angulate, 16 — 20x16 — 18 /i, with colorless, finely verrucose 

 membranes. 



r 



In conclusion it may be remarked, that the Puccinia 

 Holwayi, D. on Allium spec, described in Hedwigia 1893, 

 page 29, is identical with Puccinia Cahchorti^ Pk. 



♦Fungi Groenlandiae, 1888, p. 534. 



