182 



LECANORA ANGULOSA. 



On perusing my notes on Lecanora angulosa, in " Grevillea " (p. 

 128), I observe that a strange mistake has been committed, which 

 I can only account for having been overloolced, when I had the 

 proof, by my serious attaclc of bronchitis and lumbago, which con- 

 fined me to my bed all February. The mistake is this : the 

 chemical reagent used was not hydrate of potash (K), but hyi-)o- 

 chlorate of lime (C). There is another error ; the date of Mr. 

 Roper's sending should be November, 1875. 



W. A. Leighton. 



TRIBLIDIUM. 



{Plate 67.) 



The illustrations of the fruit of one species of Ostreichnion and 

 nine species of Triblidiwn are given to the same scale as the 

 figures in " Carpology of Peziza," and may be measured by the 

 same means : — 



1. Ostreichnion Amexicanum. Titiby — from Eavenel. No. 1456. 



2. Tiriblidium caliciifoxme. Reb. — Rabli. Fungi Eur., 231. 



3. Txiblidium hysterinum. Buf. CSyst. elevatum, Pars.). — Moug. & 

 Nest., 1070. 



4. Txiblidium insculptum. Coolie. — J. B. Ellis. No. 2111. 



5. Txiblidium, xufulum. Spr. (Trih. confluens, DeNot. Uyst. rufulum, 

 Pries). — Ravenal. 



6. Txiblidium hiascens (Hyst. Mascens, B. & C.) — ex. W. R. Gerard. 



7. Txiblidium Caxestise. C. C. (Blitridium Carestice). — Erb. Critt. Ital. 

 ii. 92. 



8. Txiblidium pinicolum CSysterium, pinicolum, Eebent.) — Rekm. 

 Ascomy. No. 24. 



9. Txiblidium minox. Cooke. — ex. herb. J. B. Ellis. 



10. Txiblidium Syxingae (Hysterium Syringce, Schwz. TrihUdium 

 dealbatum, Gerard). — ex. herb. W. R. Gerard. 



M. C. Cooke. 



PERONOSPORA INFESTANS. 

 (Resting Spores.) 



During the past winter a warm controversy has been carried on, 

 relative to the resting spores of the Potato Disease. Many years 

 ago, it will be remembered, that Mons. Montagne discovered 

 certain spherical bodies in association with the Potato fungus, 

 which he did not fully comprehend,- and to these he gave the name 

 of Artotrogus. Afterwards the Rev. M. J. Berkeley jexpressed 



