— 215 — 



pedicel straight yellowish. Resembling small forms of JS. acuta 

 in habit. — Alp. rocks r. Eur. Norway! Scotl.: Hunt. 



Fam. 23. GriiTimiaceee. 



102. Grininiia Ehrhart. 



A. Leaves spirally twisted about stem when dry. 



I. Streptopbjiluni. Leaf-cells more or less sinuous. Capsule 

 exserted smooth; pedicel longer, us. deflexed; lid not systylic; 

 peristome present. Dioecious r. fruiting. 



B. Leaves not spirally twisted. 



n. Eu-Grimmia. Leaf-cells not distinctly sinuous. Capsule 

 shorter than the gen. exserted pedicel; lid not systylic; peri- 

 stome present. 



a. Leaves smooth obtusate entne and not sheathing, appressed 

 when dry and not patent when moist; cells large; hairpoint 

 very short or wanting. Dioecious. 



1. Molliformes. Leaves large. Tufts gen. loose. Stem 

 elongate. 



2. Telutinae. Leaves very small. Tufts compact pulvinate 

 very low. 



b. Leaves smooth or (in G. ccespiticia) papillose, us. acu- 

 minate, patent when moist; cells small; hairpoint often long. 

 Often monoecious. Tufts us. pulvinate. 



3. Pulvinatae. Leaves gradually narrowed or obtuse, not 

 sheathing; cells us. short. Capsule often striate; pedicel often 

 curved. 



4. Alpestrifornies. Leaves abruptly narrowed from half- 

 sheathing base; basal cells often long. Capsule not striate; 

 pedicel r. curved. 



C. Leaves papillose crenulate, appressed when dry; cells 

 small. 



5. Andreaeoideae. Capsules unknown. 



III. Pseudo-Racomitriutn. Leaves ovate-lanceolate or subli- 

 near; cells (princ. the upper basal) sinuous, the inner basal 

 narrow-linear. Capsule as in Eu-Grimmia. 



a. Leaves carinate above, often recurved below. 



aa. Leaves (princ. the younger) papillose. Dioecious. 



1. Papillosae. Leaves not crisped but often nearly appressed 

 when dry. Pedicel of capsule arcuate. 



bb. Leaves smooth. Often monoecious. 



2. Crispulise. Leaves very narrow sublinear us. crisped. 

 Pedicel of capsule arcuate or straight. Dioecious very r. fruiting. 



