30 
drate. Plants larger than the Seligeriece, tufted. Usual 
dioecious, 
101. Blindia. Peristome well-wolute or — 
Habit of Dicranella. - APER 
Fam. 23. Grimmiacez. 
A. Capsule thin-walled, generally terminal; lid soon 
deciduous, not thick. 
l. Grimmiec. Lower leaf-cells rectangular or quie 
drate. Spores not large. 
a. Calyptra not plicate, mitriform or (sometimes in 
Grimmia) cucullate. Leaves not (exc. Grimmia ceespiticia) 
distinctly sulcate. Capsule exserted or (sometimes in 
Grimmia) immersed. . 
102. Grimmia. Peristome short; teeth often entire, 
rarely rudimentary or wanting. Leaves often with hair- 
point; cells (seldom all) sometimes with sinuous walls, 
diversiform. Pedicel of the eapsule generally not long, 
sometimes curved. Stem mostly erect. 
103. Racomitrium. Peristome long; teeth usually 
partite. Leaves often with hairpoint; ‘cells (mostly all, 
exc. the alar ones) with sinuous walls, generally diversi- 
form. Pedicel of the capsule straight, generally io. 
Stem mostly decumbent or ascending. 
104. Campylostelium. Peristome long; teeth more € 
less cleft, incurved when dry. Leaves without hairpoin! 
cells rectangular with not sinuous walls. Pedicel of the 
capsule often curved. Stem erect and simple. Habit 0 
. Seligeria.. Plants very small. 
|. b. Calyptra plicate, mitriform. Leaves often éfilcalé 
cell-walls not sinuous. Stem erect. 
105. Coscinodon. Capsule immersed. Leaves wit 
a long hairpoint, not crisped when dry. Dioecious 0 
monoecious. Habit of Grimmia pulvinata. ee 
106. Brachystelium. Capsule exserted. ied 
without Sete to HNMDT ROM cis “Monoeeious.. Habit 
of o MEE z 
