230 



THE JOURNAL OF BOTANY 



mixed with crowberry [EmiMrum nigrum) and some bilberry 

 {Vaccinium Myrtillus). At about 2800 ft., near the shoulder of 

 the flat-topped ridge or plateau which leads up to the summit on 

 the south-west, the ground is somewhat broken and stony, the 

 association becomes gradually more open, and eventually resolves 

 itself into a fair area of the Moss-Lichen Association. We were 

 able to make a careful examination of only a small portion of 

 this ground, and the list of species submitted below is of necessity 

 incomplete. The season was very early for this altitude, and the 

 time allowed by train arrangements was all too short for search- 

 ing out the more minute cryptogams. Moreover, the different 

 classes of these plants require searching for on separate occasions. 

 We have found from experience how easily mosses and hepatics 

 may be overlooked when Hchens are being collected, and how 

 incompatible the quest of flowering plants is with that of the 

 smaller cryptogams. Subject to allowance for these limitations 

 the following is a complete list of all the species noted on this 

 detached portion of the Moss-Lichen Association, occurring on 

 boulders, stones, and thin soil overlying the quartzite rock : — 



Flowering Plants. 

 Alchemilla alpina L. 

 Empetrum nigrum L. 

 Gnaphalium supinum L. 

 Vacciniitm Myrtillus L. 

 Salix herbacea L. 

 Aira and other grasses not in 

 flower. 



Vascular Cryptogams. 

 Lycopodium Selago L. 

 L. alpinum L. 



Mosses. 

 Andrecea petrophila Ehrh. 

 Polytrichum alpinum L. 

 P. piliferum Schreb. 

 Dicranum fuscescens Turn. 

 D. scoparium v. turfosum Milde. 

 Bhacoviitriiim hcterostichum 



Brid. 

 B. lanuginosum Brid. 

 Webera nutans Hedw. 



Hepatics. 

 DiplophyJhwi albicans Dum. 



Fungi. 

 Ticothecium erraticum Massal. 



Lichens. 

 Cladonia cervicornis Schaer. 

 Thamnolia vermicnlaris Schaer. 



Lichens {continued). 

 Stereocaulon coralloides Fr. 

 S. evoliUum Graewe. 

 Spharopkorns fragilis Ach. 

 Cetraria aculcata Fr. 

 Platysma triste Cromb. 

 Gyroi^hora polyphylla T. & B. 

 Parmclia alpicola Fr. fil. 

 P. lanata Wallr. 

 P. lanata var. reticulata Cromb. 

 Lecanora polytropa Schaer. 

 L. badia Ach. 



TIceviatomma ventosum Mass. 

 Lecidea aglcea Sommerf. 

 L. fuscoatra Ach. 

 L. Kochiana Hepp. 

 L. lithophila Ach. 

 L. lapicida Fr. 

 L. auriculata Th. Fr. 

 L. contigiia Fr. 

 L. confluens Ach. 

 L. fusco-cinerea Nyl. 

 L. limosa Ach. 

 L. demissa Th. Fr. 

 L. griseoatra Schaer. 

 Buellia badioatra Koerb. var. 



atrobadia A. L. Sm. 

 Bhizocarpon geograpliicum DC. 

 B. geographicum DC. var. atro- 



virens Koerb. 

 B. confervoides DC. 



