314 FRYE 
4, Polytrichum inconstans Hagen, in Nyt. Mag. Naturvid. 
TOGO, P. 330. 
Inconstans = inconstant; just how this applies to this species the 
writer does not know. 
Plants 8 cm. or less. Stems rather uniformly leaved above, with 
a felt of dark red rhizoids below. 
Leaves somewhat distant, irregularly spreading, 6 mm. long or 
less, lanceolate; lamina under lamellz 2 cells thick, between lamelle 

Fig. 21. Polytrichum inconstans. 
1 = Moist antheridial plant; d = antheridial disk, X 1. 2 = Dry plant, X 1. 
3 = Leaf showing lamelle on upper side, X 15. 4 = Leaf tip, X 65. 5 = Cross 
section of part of leaf showing margin, height of lamellz, and form of marginal cells. 
(No. 5 after Williams). 
and margin 1 cell thick. Margins plane below, erect or somewhat 
incurved above, minutely serrulate. Lamelle 24 or less, the median 
ones 5-9 cells high; marginal cells sometimes 2 side by side, not 
papillose, oblong, wider than long (about as 2 : 1), scarcely or not 
