SYNOPSIS OF ORDERS AM) GENERA. 59 



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

 veil inflated ; teeth narrow, unequally cloven or perforated ; 

 leaf- cells elongated. 



Genus 99. Elindia. Sporangium roundish, turbinate when 

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



Genus 100. Stylosteyium. Sporangium roundish, im- 

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

 oblong. 



ORDER XXXI. WEISSIEL 



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. Sporangium roundish, wide- mouthed ; 

 teeth 16, obtuse. 



Genus 103. Brachyodm. Sporangium furrowed when dry ; 

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



Genus 104. Campy lostelium. 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. IVdssia. 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. 



