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RECENT ADDITIONS TO OUR MOSS FLORA. 199 
leaves numerous branched brown radicles. Leaves par uh ne 
at base, se peat squarroso-patulous when moist, appressed 
and variously curved when dry, strongly papillose, Keck agg the 
stout nerve, which cies abruptly just below th apex ; 
margin undulate, slightly recurved, narrowly hyaline pe eae 
denticulate rds apex. Cells at base narrow oblong, hyaline or 
yellowish, upper small opaque, rounded quadrate, papillose. e 
inflorescence terminal, its bracts broadly ovate, apiculate, almost 
nerveless 
—Old walls at Malham, Yorkshire, in fruit (J. Nowell, 
1866) ; Pees (Mr. Hunt). 
Zygodon co B. rupestris, Lindberg in Hartm. Exsicc. (sel); : 
Hartm. Skand. Fl., p. 52 (1864). Z. viridissimus, B. sax 
inclcnds'é in Lorentz Moosstudien, p. 95 (1864). Zygodon Stirtoni, 
Schimper MS. 
Much more robust than the ordinary form. Leaves longer an 
narrower, with shorter points, and more opaque. Capsules rather 
more elonga 
Hab. — Rocks, principally on the Scotch coast; near rien 
Troup Head (Mr. Fergusson); Menmuir, ace in frui t (Mr. Ander 
son); near Ben Lawers Inn, in fruit (Dr. Stirton). 
Fam. 2. Orthotrichee. 
The difficulty experienced by the tyro in the determination of 
the numerous closely allied species of this group may perhaps be 
lessened by a full description of all of them. The perfect fruit is 
necessary Resin’ study, as well with the lid attached as pi it 
Hen e the capsule in these two states often presents con- 
gia aitseutao in form, while the leaves (contrary to what obtains 
sule in the genus Orthotrichum te recently been adopted by several 
ination of species, though it is to be 
feared these organs are too ainiits to be — available in practice. 
Prof. ve in 1866 applied them to gement of Ay Euro- 
pean species, and as he has kindly placed this at my service, I give 
it here, the eciicie not found in Britain being enclosed in Taashots 
e superficial stomata are cuticular only, and resemble those seen in 
Funaria, being also termed phaneropores by Milde, stomata normalia 
by De Notaris, ecg nuda by Venturi; the immersed stomata lie 
in a recess § wall of the capsule, the small orifice being 
surrounded by a ae of elegant converging cells; these also are the 
cryptopores of Milde, siemnees sphincteriformia of De Notaris, 
stomata periphrasta of Ventu 
ent be ol observed that the genus Ulota ec ae seems to be as 
tri 
