60 HANDBOOK OF BRITISH MOSSES. 



ORDEB XXXII. PHASCEL 



Sporangium indehiscent ; peristome none. 



Genus 109. Pleuridium. Fruitstalk short; sporangium 

 apiculate, lateral after innovation ; upper leaf-cells narrow. 



Genus 110. Phascum. Columella persistent; veil regularly 

 cucullate; prothallus fugacious; upper leaf-cells rather lax. 



Genus 111. Bryella. Sporangium roundish, exserted; lid 

 defined; ring adnate; veil cucullate, scabrous above; upper 

 leaf-cells chlorophyllous. 



Genusll2. Cycnea. Sporangium globose; fruitstalk curved 

 upper leaf-cells minute, subquadrate. 



Genus 113. Sph&rangium. Sporangium globose, erect, or 

 pendulous; veil mitriform; spore-sac separable; leaf-cells 

 large; prothallus fugacious. 



Genus 114. Microbryum. Sporangium subovate ; veil large, 

 many-lobed ; leaf-cells small, rhomboid. 



Genus 115. Physcomitrella. Sporangium globose; colu- 

 mella thick; veil campanulate, at first subvesicular ; leaf-cells 

 large, hyaline. 



Genus 116. Ephemerella. Prothallus persistent; sporan- 

 gium immersed; veil cucullate; spores large; upper leaf-cells 

 subhexagonal. 



Genus 117. Ephemerum. Prothallus persistent ; spo- 

 rangium immersed; veil mitriform; spores large; leaf-cells 

 large, hyaline. 



Genus 118. Archidium. Sporangium globose; lid none; 

 columella fugacious ; veil torn in the centre ; spores very large, 

 few in number. 



SECTION III. SYNCLADEI. 



Branches fasciculate ; fruit at length cladocarpous ; recep- 

 tacle elongated. 



