364 HOOKERIACE^E. 



length ; capsule small, erect, oval-oblong, with a short neck, 

 papillose ; lid yellowish, longly rostrate. Calyptra hardly reach- 

 ing below the lid, conical, strongly fringed or ciliate at base; 

 peristome teeth yellowish, linear-lanceolate ; inner of 16 narrow 

 processes, without a basal membrane. Autoicous and synoicous. 



Hab. Shady rocks or trees in sub-alpine regions. Very rare ; in two or three 

 localities in Ireland. Fr. autumn. 



One of our most distinct species, being unique among the pleurocarpous mosses in 

 its bordered leaves with long nerve and small narrow cells, as also in the papillose 

 ■capsule. 



85. HOOKERIA Tayl. 



Stems procumbent ; leaves widely ovate or Ungulate, two- 

 nerved, often bordered, complanate, areolation large, soft. 

 Calyptra shortly lobed at the base. Capsule inclined, inner 

 peristome with a basal membrane. 



1. Hookeria laete-virens Hook. & Tayl. (Tab. XLIX. I.). 



Stems procumbent, sub-pinnately branched ; branches 

 complanate ; deep green, very soft and flaccid. Leaves 

 complanate, rather distant, widely spreading, oval-oblong, 

 abruptly and sharply acuminate, thin and pellucid, when dry 

 flaccid, shrinking, and somewhat undulate, finely denticulate at 

 apex ■ with two, distinct, narrow nerves, reaching three-fourths 

 the length of the leaf, divergent from the base ; cells widely and 

 shortly hexagonal, about if-2 times as long as wide, 20-25 p. in 

 diameter, laxer at base, thin-walled ; the marginal in 2-4 rows of 

 narrow-linear cells, forming a narrow but distinct border. Seta 

 about 1 inch long, reddish, smooth. Capsule small, horizontal or 

 sub-pendulous, elliptical, smooth ; lid rostrate. Peristome red, 

 the inner yellow ; basal membrane one-third the height of the 

 teeth. Autoicous. 



Hab. Damp rocks by rivulets, etc., very rare. Penzance; Ireland. Fr. 

 autumn. 



A very rare and pretty species, known at once by its soft, rather distant, 

 spreading leaves, with long double nerve, smaller areolation, and distinct border, from 

 tterygophyllum lucens, and indeed from all our species. 



/ 



86. PTERYGOPHYLLUM Brid. 



Leaves large, ovate, nerveless, complanate, entire, succulent. 

 Cells large, hexagonal. Fruiting characters as in Hookeria. 



