276 Mr. R. Spruce on the Musci and Hepatica of the Pyrenees. 



This species is abundant in woods on calcareous soil near Castle- 

 Howard, but is always sterile. 



24. H. elegans, Hook. Muse. Exot. t.9; Schwgr. Suppl. t.282«. 

 H. planifolium, Brid. ? BryoL Univ. 2. p. 411. 



Hah. Til— 2 I*- c. prope B.-de-Bigorre, ad terram ( ? ) ; Bois de 

 Sajust prope B.-de-Luchon, ad rupes graniticas ( ¥ et<^). 



Mr. Wilson has lately found in Mr. 1 urner's herbarium fertile spe- 

 cimens of this (gathered near Bantry by Miss Hutchins, but con- 

 founded with H. denticulatum) which agree in every respect with the 

 original specimen in Herb. Hook, (gathered by Menzies on the N.W. 

 coast of America). He also suggests that H. planifolium, Brid., /. c, 

 gathered by Lapylaie near Falaise, is the same species, but there are 

 some discrepancies not easily reconcileable. For instance, our plant 

 has the leaves remarkably deflexed at the apices so as to appear secund 

 in profile, whereas Bridel says " folia recta;" but on the whole I ad- 

 mit that it is very probable he had the same species under his eye. 



In the Bois de Sajust I found male and female plants intermixed. 

 The former are very slender and elongated : the flowers are situated 

 on the stem and the lower part of the branches, those near the base 

 of the stem often fascicled, but the upper usually solitary ; they con- 

 sist of about ten ovato-lanceolate, shortly acuminate, concave leaves, 

 and include about four paraphysate antheridia. 



In April 1846 Mr. Borrer and myself gathered H. elegans on the 

 sand-rocks in Bridge Park, Tunbridge Wells, and I have since met 

 with it abundantly in the neighbourhood of Castle-Howard, inEskdale, 

 &c. Perhaps Dr. Taylor was the first who ascertained its existence 

 in the British Isles and clearly distinguished it ; Messrs Wilson and 

 Mitten have also found it in several stations. It grows on decaying 

 vegetable matter, on the earth or on rocks, avoiding only such as are 

 calcareous, while H. depressum, its very near ally, is quite pertina- 

 cious in selecting a calcareous matrix. The former differs from the 

 latter chiefly in the more faintly toothed or quite entire leaves, their 

 slenderer points and closer more chlorophyllose areolation, but espe- 

 cially in the pendulous capsule. Both species are dioicous, scarcely 

 ever fruiting, but propagating themselves by slender deciduous flagel- 

 liform ramuli, which spring from the stem in fascicles. These ra- 

 muli are sometimes so numerous as to be alone visible, and being 

 clad with minute distant leaves, they give to the tufts the aspect of 

 drawn-up H. suhtile. 



25. H. trichophorum, Spruce in mst. Leskea pilifera, Swartz ! 

 (ex herb. Smithii). Neckera p.. Muse. Pyr. 66. H. denticulatum 

 var. Donnianum, Drumm. ! Muse. Am. n. 165 [nonnull. exemplo- 

 rum) : non H. Donnianum, Sm. 



Hab. Zg ad iatera seopulorum graniticorum versus terram spec- 

 tantia, in umbrosissimis vallis Jeret, P. occ. 



Inflorescence monoicous : flowers fascicled, the male and female in 

 separate fascicles. Peristome very pale ^ especially the outer ; the inner 

 cloven to frds of its length : processes perforated, between the articu- 



