80 
THE JOURNAL OF BOTANY 
Grips Valley, gave 88 and G8 as maximum and minimum lengths of 
spores respectively. 
On a small fragment of moss (no. 14 c), Bear Island, a specimen 
of Placodium cerinum is growing. It resembles in its scanty mem¬ 
branous thallus and small apothecia Placodium cerinum var. stilici- 
diorum. There is, however, a difference in the yellow-orange colour of 
the apothecium, and the thallus can scarcely be described as leprose. 
This, the only fragment of its kind in the material, is an interesting 
specimen with 14 apothecia growing over the stem of a moss which is 
less than 2 cm. long. 
I take this opportunity of thanking Miss A. Lorrain Smith for 
her valuable help in identifying the parasitic fungi upon the speci¬ 
mens, and for suggestions respecting the determination of critical 
species. 
Systematic List. 
The nomenclature is that of Miss Lorrain Smith’s ^Monograph of 
the British Lichens. The number of lichens in the collection that 
are not included in the British flora is remarkably small, approxi¬ 
mately 5 per cent. 
An asterisk denotes that the lichen has not previously been 
recorded for Spitsbergen; localities are indicated by numerals:— 
1, Bear Island; 2, Prince Charles Foreland ; 3, Gips Valley ; 4, Advent 
Bay. 
Sphcerophorus globosus Wain. 1, 2, on earth among moss. 
Blacynthium nigrum S. F. Gray 3, on rock. 
JEphebe lanata Wain. 3, on rock. 
Psoroma hypnorum S. F. Gray 1, 2, on moss. 
Beltigera apthosa Willd. 1 ; P. ccinina Willd. 1 ; P. malacca 
Fr. 2; P. rufescens Hoffm. 1: all on earth. 
# $olorina bispora Nyl. 1,3; >8. crocea Ach. 1, 2, on earth. 
Barmelia alpicola Til. Fr. 2, on rock ; P. omphalodes Ach. 1, on 
moss. 
Cetraria aculeata Fr. 1; C. hiascens Th. Fr. 1,2; C. islandica 
Ach. 1, 2 ; C. nivalis Ach. 1, 2, 3 : all, over earth with moss. 
Usnea sulphurea (Koerb.) Th. Fr. ( = Xeuropogon melaxanthun 
Nyl.). Advent Bay, on rock. 
Alectoria bicolor Nyl. 1, on rock ; A. diver gens Nyl. (Herdman- 
sen Island), on earth; A. nigricans Nyl. 1, on rock ; A. ochroleaca 
Nyl. 1, on earth. 
Cerania vermicularis S. F. Grav 2, 3, and var. taurica A. L. Sm. 
3, on earth. The variety has a well-developed thallus, which is 
markedly turgid, suberect, slightly recurved, cornute, and pointed at 
the apices. 
Xanthoria parietina Th. Fr. 1, 2, 3, on rock. 
JPlacodium cerinum Hepp. 1, on moss ; P. elegans DC. 1, 3, on 
rocks ; P. murorum DC. 3, on wood; P. rupestre Brantli & Kostr. 
var. calvum A. L. Sm. and f. incrustans A. L. Sm. 1, on calcareous 
rock. 
*Physcia pulverulenta Nyl., over moss; P. lithotea Nyl. 3, on 
rock. 
