190 Reaction of Iodine in Lichens. 
28. V. epidermidis, Fr. et auct. 
A. Var. Frazini, Garov.= Mass. Exs. 298 & 299. 
Subvar. diminuta, Garov. = Hepp. 458, 454; Leight. Exs, 
288; Anzai, Lich. rar. Ven. 127. 
Subvar. afomaria, Garov.= Hepp. 456; Leight. Exs. 344. 
B. Var. analepta, Garov. 
Subvar. spectabilis, Garov. 
Subvar. Lapponina, Garov.=Anzi, Lich. rar. Long. 347. 
Subvar. vulgaris, Garov. = Scher. Exs. 287; Moug. & 
Nestl. 364; Mass. Exs. 185, 186; Hepp. 451 & 452; 
Leight. Exs. 29? 
Subvar. diminuta, Garov.= Mass. Exs. 258. 
Subvar. Jetule, Garov.=Scher. Exs. 107, 108; Moug. & 
Nestl. 363 & 364e; Heppe, 450. 
C. Var. cinereo-pruinosa, Garov. = Hepp. 105, 106, 107; 
Leight. Exs. 197; Mass. Exs. 203; Anzi, Lich. rar. Ven. 
129. 
Subvar. st7gmatella, Garov.= Mass. Exs. 197, 198; Hepp. 
455, 456. 
D. Var. Lauri, Garov.= Leight. Ang. Lich. t. 17. f.5? 
Appendix. 
The following have not been found as yet in Lombardy, but 
deserve mention :— 
Pyrenula muscorum, var. faginea, Rab. 623 (non Hepp. 708). 
(Corticola, sporis bilocularibus.) 
Arthropyrenia saxicola, Mass. Eixs. 348. (Saxicola, sporis bi- 
locularibus). 
Verrucaria margacea, Leight. Brit. Lich. Exs. 319. (Saxicola, 
sporis bilocularibus). 
Thelidium Nylanderi, Rab. 594 (non Hepp. 440). (Saxicola, 
sporis bilocularibus. ) 
Reaction of Iodine in Lichens. 
Owing to the misreading of the formula given in ‘Not. Lich.’ 
No. I. (p. 59 of this volume) by the chemist to whom it was 
entrusted for preparation of the solution, a very important and 
serious error has been committed respecting the quantity of 
water to be used. The proper quantities are therefore here 
given :— 
Iodine, gr. }. 
Iodide of potash, gr. ii. 
Distilled water, 4 oz. 
