206 



HANDBOOK OF BRITISH HEPATIC^E. 



entire. Green, ochraceous, or olive-brown. Amphi- 



gastria 2-3 den- 

 tate (fig. 146). 

 Dioicous. After 

 impregnation the 

 fleshy base of the 

 receptacle elon- 

 gates and des- 

 cends into the 

 earth as a hollow 

 oblong pouch, 



attached to the stem by its upper border (fig. 148). 



Capsule reddish-brown, quadrivalvular. Spores 1 5/x 



diam., reddish-brown. 



147. 



148. 



Genus 30. NARDIA, Gray. 



Dioicous. Perianth connate with involucral 

 leaves to form . an urceolate involucre ; 

 stoloniferous at the base. Shoots ascending 

 or erect, innovations ventral. Leaves dis- 

 tichous, subvertical. Amphigastria present 

 only in species with round leaves. Andraecium 

 terminal, subspicate — Carr. Hep. 10. 



Gray Arr. B. PI. (1821). Alicularia, 

 Corda Opiz. Beitr. (1829). Mesophylla, 

 Dumort. Southbya, Spruce Trans. Ed. III., 

 p. 197. Marsupella, Spruce; see " Nardia " 

 in Spruce Hep. Amaz. p. 518. 



Dr. Carrington, in referring to the ramification in 

 this genus, says that, instead of the ordinary furcate 

 division of the stem, the annual shoots spring from 



