Mr. W. Mitten on the Mosses and Hepatica of Sussex. 369 



parallel seta : this peculiarity will often distinguish B. torquescens 

 from B. capillar e at first sight. 



153. B. pyriforme, Hedw. 



In the stone-pit at Henfield, and about Tunbridge Wells. 



In his ' Synopsis,' p. 330, C. Midler says of this species : " Peri- 

 stomii interni dentes maxime sulcati et hiantes valde serrati igitur 

 veluti (sed non) appendiculati hyalini, ciliis solitariis brevibus non 

 appendiculatis hyalinis interpositis. Formam peristomii hancce in 

 speciminibus permultis examinatis invenimus et ' Bryol. Europ.' in- 

 dolem non vidimus." The appearance above described is not the 

 primary state of the peristome, which is correctly figured in ' Bryol. 

 Europ.,' but is produced by the splitting of the processes down the 

 carina as in Acidodontium and Bartramia, each half of the process 

 bending over the intermediate cilia to meet at the apex the half of 

 the next process : thus the two intermediate cilia with the two halves 

 of the processes overlapping them, closely resemble a simple process, 

 and the appendiculse of the cilia sticking out here and there make 

 it appear to be appendiculate. 



Tribe VI. Bartramiace^e. 

 Genus 1. Bartramia, Hedw. 



154. B.fontana (L.), Schw. 



Common in bogs and wet places ; rarely fertile. 



155. B. pumila, Mitten; dioica; dense csespitosa tomentosa 

 parum ramosa; folia caulina erecto-patentia homomalla ovato- 

 lanceolata, nervo crasso superne dorso apiceque denticulato ex- 

 currente cuspidata, opaca, margine denticulato recurvo, e cellulis 

 parvis ut plurimum rectangularibus viridibus densiusculis, pa- 

 pillis remotis scabridis instructis, areolata ; perigonialia interna e 

 basi lata concava patentia obtusiuscula minute denticulata, nervo 

 crasso sub apice evanido : perichsetialia longiora latiora et parum 

 acuminata : theca in pedunculo elongato rigido undulato erecto 

 subito inclinata globosa sulcata, operculo plano-conico obtuso ; 

 peristomium duplex normale. 



In a wet place near Tilgate Pond, Tilgate Forest ; the male plant 

 only. Mr. Wilson has sent the barren female plant gathered by 

 Mr. Croall in the Carse of Arderseir, Inverness-shire. The fruit is 

 described from specimens gathered near Dollar, Perthshire, by Mr. 

 M'lvor. 



The stems of this species in size and habit closely resemble those 

 of B. marchica, and some small states of B. fontana. The figure of 

 B. uncinata, Schwaegrichen, Suppt. t. 57 [B. scabrida\ excepting the 

 capsule and uncinate narrower leaves, very well represents B. pumila ; 

 but in this, as in B. marchica, the perigonial leaves are acuminate and 

 acute, whilst those of B. pumila are obtuse like those of B. fontana ; 

 again, the cauline leaves of B. pumila are perfectly ovate-lanceolate, 



Ann. $ Mag. N. Hist. Ser. 2. Vol. viii. 24 



