104 mr pt THE JOURNAL OF BOTANY 
English plant, Mr. Clarke’s “ first record”’ being that of Ray 
(1688), and the reference to Gillen is all that we know of his visit 
Hortus Cassel. anno 1627 4°, 1632 4°. Catalogus brevissimus, 
solorum nominum, absque synonymis aut adnotationibus.” Pritz- 
zel (ed. i.) enters his name as “ Gille, Arnold, latine Gillenius ” ; 
but for this there seems to be no authority. This is all I can find 
about him. 
EICCIA CROZALSII IN BRITAIN. 
By D. A. Jonzs, F.L.S. 
Durine a visit to Barmouth in September, 1908, Mr. 8. J. 
Owen and I found a small Riccia growing sparingly on the top of 
been gathered by Mr. W. H. Pearson in April, 1876, we sent it to 
r. Symers M. Macvicar as that variety. He, however, suspected 
it to be R. Crozalsii Levier, but could not form a definite opinion 
lhe following is for the most part a translation of Levier’s 
Latin diagnosis :—Monoicous, slender, 2-3 mm. long, 0:34- 
0-75 mm. wide, glaucous green except at the margins, and dark- 
r 
e e 
verse section. Style very dark, slightly protruding above the 
epidermis. Spores 65-85 p, opaque, dark brown, border narrow, 
entire, or sparingly and minutely granular-papillose. Areole 
numerous, 8-12 along the diameter. Rhizoids hyaline, with very 
