84 
LICHENOLOGICAL MEMORABILIA. 
• Vexxucaria chlorotica. (Ach.) — Goodwick FisLguard Har- 
bour. f. suhintegra, Nyl., Manoerowen. Bare. f. carpinea^ Sch^r., 
on Calluna vulgaris^ Pen Cow. 
Veirrucaxia olivacea. Borr. — On sycamore. River Gwaine. 
Very rare. 
Verrucaria ezsratica. (Mass.) — On Lecidea geographica. Fort 
Hill. 
Fhacopis varia. Tul. — A fungus, in fine condition, parasitic 
on Farmelia saxatilis. Pen-y-rhiw. 
The following may be, perhaps, considered worthy of a more 
extended notice : — 
Iiecidea myriocarpa. DC. — var. Saxicola. An interesting series 
occurred in various places on the rocks, which may be defined thus: — 
1. forma areolata. Leight. — Cinerascent, thin, effuse, minutely 
rimoso-areolate, arcolce plane ; apothecia black, numerous, crowded, 
adnato- sessile, plane ; margin slightly prominent, thickish and 
paler, eventually obliterated ; excipulum lateral, nigro-fuscous, 
short ; hypothecium central nigro-fuscous ; paraphyses distinct, 
coherent, apices very large, nigro-fuscous or nigricant ; spores 8, 
fuscous, oblong, 1-septate, small ; gelatina hymenea, I violet. 
Spores •012-*014 m.m. long, -OOG-'OO? m.m. broad. The 
thallus has no reaction with K or C, but when C is applied after 
being wet witli K, a singular whitish effervescence ensues. The 
hypothecium is a nigro-fuscous central mass, sej)arated from the 
nigrofuscous lateral excipulum by a pale interval. 
Goodwick Bay ! Not common. 
2. forma leprosa. Leight. — Albido-cinerascent, areolge dissolved 
into a leprose^ pulverulent, effuse condition. 
Exs. — Zw. 127, Leight. 181, Mudd 189. 
Cliffrigg ! Yorkshire, Mr. Mudd. Haughmond Hill ! Shrop- 
shire, Goodwick Bay ! Newport Road ! near Fishguard, Pembroke- 
shire. 
3. forma ecrustacea. Leight. — Thallus nearly or quite evan- 
escent and obliterated, leaving the numerous minute apothecia naked 
and prominent. 
Ashington Common! Sussex, Mr. Borrer, ClifiVigg I York- 
shire, Mr. Mudd, near Kilcully, Cork 1 Mr. Carroll, Haughmond 
Hill 1 Sharpstones Hill ! Lyth Hill ! Longmynd ! Shropshire. 
Goodwick Bay ! St. David’s ! Pembrokeshire. 
Intermediate states were often observable connecting the above 
forms. Externally f. ecrustacea resembles L. dispansa, Ny’l., but 
the different spores prevent confusion. According to specimens 
received years ago from Mr. Borrer, as occurring with his true 
L, prominula, on flints on the Sussex Downs, this form would 
appear to be the lichen iiienlioned by him in E. Bot. Suppl., 
