293 
Leaves rather dense, obliquely inserted, distichously and flatly 
distant or more or less turned towards the apex, slightly decurrent, 
rather irregularly shaped and lobed, rotundo-quadrate, as broad as 
long, generally symmetrical or the ventral side slightly longer than 
the dorsal side, generally four-lobed to f or L sinus broad and obtuse 
or narrow and acute, more or less gibbous, lobes generally convex, 
sometimes concave, acuminate-obtuse, all or at the least some 
furnished with a hyaline point of one or many cells, of equal size or 
of rather unequal size, lateral lobes smaller than the median, bearing 
at the ventral base 2 to 3 cilia ; ail the cells of the leaf almost 
equal, in the middle of the leaf rotundo-quadrate to hexagonal, 
O. 02 to 0.027 mm. in diameter, trigones slightly to well-developed. 
Stipules large, bifid, filiform at the apex, provided at the base with 
filiform cilia. Gemmae rather commonly present, sometimes numer¬ 
ous in beautiful reddish masses, growing from the margin of the 
apical leaves, angular, very often quadrangular, 0.02 to 0.027 mm. in 
diameter. Male plants exhibiting several antheridia separated by 
leaves; bracts saccate at the base, strongly unsymmetrical, ventral 
lobe largest and broadest, the rest of the lobes on the contrary always 
smallest towards the dorsal side. Periclieetial leaves more lobed, 
lobes generally bearing longer hair-points. Perianth shortly and 
thickly ovate, very plicate in the upper part, very fimbriate at the 
contracted mouth. 
Translated from the Latin diagnosis in “ Die Moose des Sarck- 
gebietes” by H. W. Arnell and C. Jensen, Stockholm, 1907, p. 109. 
(Prionolobus Massalongi (Schffn.) 
Cephalozia Massalongi Spruce. 
Differs from C. clachista in the dioicous infioresence, taller stature, 
and elongate stem leaves, almost bipartite lobes distantly strongly 
spinulose ; stipules everywhere present, subulate or lanceolate, entire 
or bifid, subspinulose. 
Translated from the Latin diagnosis in “On Cephalozia " by E. 
Spruce, Malton, 1882, p. 71. 
P. Massalongi differs from P. Tuvncvi in the thin-walled cells, the 
presence of stipules and the more or less papillose cuticle, and from 
P. dentatus in the longer stems, absence of reddish colouring, the 
leaves not accrescent and the papillose cuticle. Note by W.E.N. 
