SYNOPSIS OF ORDERS AND GENERA. 59 



Genus 98. Arctoa. — Sporangium short, furrowed when dry; 

 veil inflated; teeth narrow, unequally cloven or perforated; 

 leaf-cells elongated. 



Genus 99. Blindia. — Sporangium roundish, turbinate when 

 dry ; veil at first angular below ; leaf-cells rectangular. 



Genus 100. Stylostegium. — Sporangium roundish, im- 

 mersed ; veil very short ; peristome none ; upper leaf-cells 

 oblong. 



Oedeb XXXI. WEIS8IEI. 



Sporangium erect, equal ; peristome 0, or of sixteen, mostly 

 entire teeth, often united at the base ; leaf-cells mostly minute 

 above or quadrate. 



Genus 101. Anodus. — Sporangium straight, truncato-ovate ; 

 columella at length exserted ; peristome none. 



Genusl02. Seligeria. — Sporangiumroundish, wide- mouthed; 

 teeth 16, obtuse. 



Genus 103. Brachyodus. — Sporangium furrowed when dry ; 

 ring broad ; teeth very short, truncate, partly confluent. 



Genus 104. Campylostelium. — Fruitstalk curved; veil five- 

 cleft; ring double ; teeth long, connected below, cloven above. 



Genus 105. Rhabdoweissia. — Sporangium erect, striate; 

 teeth narrow ; ring very narrow ; leaf-cells subquadrate above. 



Genus 106. Weissia. — Sporangium erect, even; teeth 

 mostly free at the base without a medial line, entire, bifid, or 

 perforated ; upper leaf-cells minute. 



Genus 107. Gymnostomum. — Sporangium erect ; veil large, 

 rostrate ; peristome none, or the rim of the orifice adheres to 

 the top of the columella. 



Genus 108. Systegium. — Fruitstalk short; lid persistent 

 but separating easily when mature; spores rather small, glo- 

 bose. 



