i ae we 
eg. ee ee ee 
THE LICHENS OF PERTHSHIRE 13 
C. racemosa, C. crispata, C. squamosa, C. cocctfera, C. pleurota, 
C. deformis, C. Floerkeana, Cladina rangiferina, C. sylvatica, 
upestra ialt 
Lecidea coarctata, L. granulosa, L. uliginosa, L. Templetont, 
L. neglecta, Biatorina contristans, Bilimbia sabulosa, B. igniaria, 
ne na. 
n Perthshire the zone under consideration provides a rich 
iatioty of gence lichens. The lists here given must not be 
regarded as complete, and at present we can only divide the 
rock-habitats sb three very broad types. Much further study is 
needed as to the distribution of saxicole lichens. 
M the species in the following lists for the subalpine 
zone occur in the zones both above and below, but it is thought 
best to include them so as to show a more ’ complete view of 
ot lichens the botanist may expect to find on each class 
of rock. 
On calcareous rocks, especially on limestone and — -sericite, 
n dry exposed situations, have been foun yptlonema scoticum, 
Pier, yguum pannariellum, Physcia cesia, Panosaria Someta 
Caloplaca erythrella, C. pyracea, Lecanora frustulosa, L. tartarea, 
pare sp 
depressa, A. calcarea, A. subdepressa, A. poriniformis, A. Prevostit, 
Acarospora glaucocarpa, A. squamulosa, A. i iti Psora lurida, 
P. lugubris, P. tug ubrior, Lecidea leptostigma, L. immersa, L. 
subfurva, E. jurana, L. consentiens, L. contigua, L. cinerascens, 
icida, L. hone la, L. nigrogrisea, L. segreqans, Biato- 
rella subigrata, B. rhypodiza, Biatorina confusior, Rhizocarpon 
calcareum, Polyblastia inumbrata. In moister places, or on 
damp, s ‘i y rocks, occur Gonionema velutinum, G. compactum, 
Collema glebulentum, Leptogium rhyparodes, Collemopsis furfur- 
pti Ionaspis epulotica, Rhizocarpon petreum, Staurothele 
umbrin 
On silico eous rocks, or schists with a low lime-content, ge 
on quartzose-schists, the following may be looked for. On drie 
rocks of this class :—Spherophorus coralloides, S. fragilis, Usnea 
i dora bicolor, A chalybeiformis, pares Fahlun 
Pig ixtum, P. glaucum, P. lacunoswm, — ponent 
P. aisha sodiar P. Mougeoti, P. proiixa, P. tri nata 
P, stygia, Gyrophora proboscidea, G. ails, G. torrefacta, 
G. polyphylla, G. flocculosa, G. eager Squamaria saxicola, 
S. gelida, Lecanora glaucoma, L. epanora, L. polytropa, L 
siilphecet L. atra, L. badia, L. picea, L. tacks area, L. parella, 
ematomma ventosa, Aspicilia — Pertusaria Westringiz, 
P. dealbata, a denudatum, S. cora — Lecidea 
lucida, L. coarctata, L. em ophila, L. confluens, L. lithophila, 
L, albocerulescens, L. cinerascens, L. subkochiana, L. fuscoatra, 
wwulosa, L. Kochiana, Ee fuscocinerea, L. atrofuscescens, L. 
furvella, L. asperella, Biatorella chalybeia, Bilimbia leucopheoides, 
Bacidia wmbrina, Buellia alpicola, B. colludens, B. badioatra, 
Rhizocarpon Gderi, R. confervoides, R. geographicwm. 
In_ moister Aare wth —Spilonema revertens, Pyrenopsis 
