Jennings: Manual of Mosses — 31. Hypnaceae 261 



I. Capsule 3-4 mm long with apiculate or subrostellate lid 



4. S. tmponens (Sc2 also S. cupressiformis) 



I. Capsule 2 mm long; lid Yz as long as um 12. S. tenuirostris 



}. Quadrate alar cells very numerous; 6-10 along the margin K 



J. Quadrate alar cells few or none L 



K. Leaves little or not serrulate; inflated alar cells few; dioicous 5. S. cupressiformis 



K. Leaves distmctly serrate; no inflated alar cells; monoicous S 



L. Monoicous; capsules often not plicate when dry and empty; a few subquadrate 



alar cells and a few inflated angle cells 3. S. fertilis 



L. Dioicous; capsules strongly plicate when dry and empty; alar cells not quadrate 



but broader, incrassate, often colored 6. S. curvijolius 



M. More or less regularly and evenly pinnate Q 



M. Not regularly pinnate N 



N. Operculum not rostrate O 



N. Operculum distinctly rostrate ..-- P 



O. Leaves entire or serrulate at apex; decurrcnt cells inflated; leaf-apex gradually loni- 



acuminate 6. S. curyif alius 



O. Leaves entire; a few alar cells abruptly mflated and hyaline; leaf-apex broadlv acu- 

 minate to acute or blunt 7. S. Patientiae 



P. Lid about '/2 as long as the urn 10. S. recurvans 



P. Lid about as long as the urn H. S. delicatulus 



Q. Slender and sparsely branched; lid about j/2 as long as the urn; cilia rudimentary 



or none 12. S. tenuirostris 



Q. More robust and abundantly branching; lid relatively short; cilia well developed R 



R. Leaves entire, broadly acuminate to acute or blunt; a number of alar cells abrJDt- 



ly inflated and hyaline 7. S. Patientiae 



R. Leaves entire or serrulate near apex; only a few enlarged or inflated alar cells L 



S. Capsule more or less arcuate; quadrate alar cells very numerous and extending up 



along the margin 10 or more cells 1. S. reptilis 



S. Capsule erect and symmetric or nearly so; quadrate alar cells few; in the mountains 



at higher altitudes 2. S. palles:cns 



1. Stereodon reptilis (Richard) Mitten 



{Hypniim reptilis Richard) 

 Plate XLIX 



Smp.ll, dark or yellowish-green, lustrous, widely and loosely cespitose: 

 .^rems more or less regularly pinnate, closely interwoven; stem-leaves crowded, 

 lance-acuminate from an ovatc-oblong base, about 1 x 0.4-0.5 mm, falcate- 

 secund, slightly decurrent, serrate above, serrulate to entire below, the margins 

 usually revolute; median leaf-cells linear-rhomboidal to linear-flexuous, about 

 8-12:1, shorti^r and more or less colored towards the base, the alar cells numer- 

 ous, quadrate, much incrassate, sub-opaque, none inflated; branch-leaves similar 

 but proportionally much narrower; paraphylla small and few; costa double, 

 short, yellowish, or none; inner perichaetial leaves long-acuminate; usually 

 faintly bi-costate, apically serrate, strongly plicate: seta castaneous, lustrous, 

 about 1.5 cm long, when dry dextrorse above; capsules about 2.5 mm long, 

 cylindric, yellowish, mostly abruptly arcuate jujt below the mouth so that the 

 lid often points at right angles to the direction assumed by the base of the 

 capsule, when dry the um more or less wrinkled and narrowed below the 

 mouth; lid yellow, rather large, high-convex, narrowly obliquely rostrate; peri- 

 stome hypnoid, the teeth subulate-acuminate, orange-yellow and dorsally cross- 



