/'(fr(f.s/fir Fiivf/i of Illinois. '210 



U. hydrangeae, B. & ('. 



Hypogeiious. S|)()ts siiuill, yellowish, more or less con II u- 

 eiit. Sori minute, scattered, few; spores ol)()V}ite, produced on 

 pedicels, minutely tul)erenlate, 12-18 by 16-24 ^. 



On HijdnoKjea arhoresce)is. 



This name is attached to specimens in the Curtis herbarium, 

 and published in Curtis' Cat. Pits. N. C. p. 122, without des- 

 cription. The specimens from which the des(rription is taken 

 were collected by Mr. F. S. Earle. (^)bden. Oct. Hi 1S7'.). 

 There is no evidence of the occurrence of the fungus else- 

 Avhere in the rftate. 



OLEOMA, TuL. 



Spoi-es one-celled, produced in vertical chains, soon sepa- 

 rating- in a ])()wdery nuiss. sorus without pseudoperidiiiiu, but 

 souietinies covered by a thin adherent membrane, often with 

 sperma<2,-onia, and with or without paraphyses. 



The term Caiomsi has been used with sevei-al and very dif- 

 ferent sig-nifications. As here limited it does duty, probal)ly 

 tem])orary. as a genus of so-called species of which teleuto- 

 sporic forms are still unknown. As defined the genus differs 

 from J'^redo in the manner of the production of the spores, and 

 from ^J'Jcidiimi in the absence of a peridium. According to 

 some authors the ])resence of spermagonia is taken as the special 

 (diaracteristic of ('(lotini as against I 'redo, so that with these 

 writers the forms having spores in chains, Imt without sperma- 

 gonia. are arranged under the lattei-, as. for example, the so- 

 called Uredo a(jriinoni<i', — herein found as Cf/viixf f(f/r/ino)ii(r. 

 Schw. It, however, seems pretty evident that, with or without 

 s])ermag()nia, those forms having spores in chains represent 

 rather the tecidial than the uredo stage, and as some species of 

 .Kcidinm have no spermagonia, the absence of the latter in 

 C(roni(t ought not to be unlocked for. 



Some of the so-called Cwoiiui' have ))een identified as the 

 iecidial forms of riinitjiiiidiiim^ which see. Compare also CoJe- 

 os2)oriinii. 



