484 EEV. J. M. CROMBIE OT^ TiEW BBITISH LICHE:?sS. 



7. Lecidea spododes, iVy/, in litt,; Crombie in Seem. Jour. Bot, 

 1869, p, 233, Thallus greenish yellow, thin, granulose, somewhat 

 evanescent: apothecia cinereous or sordid pale, small, convex, ira- 

 marginate : spores simple, oblong, '010-'014 millim. long, •0025--'0040 

 millim. thick (with hydrate of potass slightly or spuriously 3-septate): 

 hymeneal gelatine blue, and then wine-red, with iodine. 



On old pales near Lyndhurst, in the New Forest, April 18G9. 

 Apparently rare and local. It is closely allied to i. denigrata, 

 Prs., of which probably it is to be regarded as a subspecies, though 

 externally in colour of thallus and apothecia it is readily distin- 

 guished from this. 



8. Lecidea parissima, Nyl. in Hit. Thallus sordid, greyish green 

 when moist, granulose, indeterminate; apothecia blackish, reddish 

 brown when moist, small, more or less crowded : spores oblong or 

 fusiform-oblong, simple, -OOy-'Oll millim. long, '0025-'0O35 miUim. 

 thick (with hydrate of potass showing an obsolete septum), the epi- 

 thecium also being obsoletely violet tinged with the same : spermatia 

 oblong-cylindrical : hymeneal gelatine wine-yellow with iodine. 



On an old pale at G-older's Green, Hendon, Middlesex, May 

 1870. Plentiful in one spot, and may be expected to occur else- 

 where in similar situations near stagnant water- Like the pre- 

 ceding, it is closely allied to i. denigrata^ Frs., from which it dif- 

 fers chiefly in the reaction with iodine as above. 



9. Lecidea subturgidula, Nyl, in Flora, 1868, p. 343. Thallus 

 greenish white, very thin^ effuse : apothecia pale, more or less livid, 

 opaque, convex, small, immarginate, hypothecium brownish : spores 

 eight in thecse, colourless, oblong, simple or slightly 1-3-septate, 

 •008--014 millim. long, '003-*004 millim. thick: paraphyses not dis- 

 crete, epithecium yellowish white : hymeneal gelatine blue and then 

 yellowish with iodine. 



On the decaying wood of old decorticated hollies in the New 

 Forest, near Lyndhurst railway-junction, May 1868. Very rare 

 and found sparingly only on two trees, notwithstanding a some- 

 what extended search in different parts of the forest. Its sys- 

 tematic place amongst British species is near to Z. mel^sna, Nyl. 



10. Lecidea deducta, Nyl, in litt.'y Cromb, in Seem. Jour, Bot. 

 1869, p. 233. Thallus obscurely subgelatinous, but scarcely proper 

 (traces of a greenish effuse thallus being here and there visible) : apo- 

 thecia blackish, small, usually margined : spores 8 inthecse, colourless 

 or faintly blackish, elliptical or oblong, 3-septate, '010-*013 millim. 

 long, '0035-0045 millim. thick : paraphyses not discrete, thin layer 



