216 SYNOPSIS OF BRITISH MOSSES. 



nate. L. with a longer nerve, seta longer, often 3 

 inches or more. 



Sub-genus 3. Harpidium. 

 Br. generally pinnate. L. falcate, singly nerved, 

 cells narrowly linear, laxer towards the base, enlarged 

 and excavate at angles. 



a. Dioicous. 

 t Stems and branches strongly hooked at apex. 



529. H. adTincum, Eedw., St. iv. t. 24 {H. Kneiffii, B. 

 and S., ed. 1). St. 2 — 6 inches long, erect, subpinnate; 

 st. 1. falcato-secund, somewhat distant, oblong-lanceo- 

 late, with a long, fiexuose acumen, occasionally faintly 

 subserrulate near the base, thinly nerved two-thirds 

 the length, not striate ; br. 1. smaller, subsecund or 

 patent, basal angles decurrent, excavate, of lax, sub- 

 quadrate cells, middle, hexagono-rectangular, apical, 

 narrow, elongate-rectangular ; per. 1. erect, oblong- 

 lanceolate, int. longly acuminate, and slightly sulcate. 

 Caps, cylindrical, oblong, arcuate, broadly annulate. 



Swamps and marshes. June. 



Var. yS. Kneiffii. St. long, flexuose, scarcely 

 branched. L. patent or subsecund, suberect or some- 

 what falcato-lanceolate, ovate-sagittate, nerved to about 

 middle, basal cells narrower ; int. per. 1. deeply sulcate. 



530. H. vernicosum, Lindb., 1861 (ff. pellucidum, 

 Wils. MS. ; H. aduncum, var. tenue, Bry. Brit.). St. 

 erect, rather rigid, pinnate. L. shorter, falcato-secund, 

 the apical ones involute, ovate, oblong-lanceolate, more 

 or less acuminate, distinctly sulcate, neither auricled 

 nor decurrent, very glossy, yeUow-green, nerve vanish- 

 ing far below apex, cells very narrow, vermicular. 



