160 GRIMMIACE^E. 



The distribution of this little moss is very much that of Brachyodus trichodes, 

 with which, moreover, it is frequently found growing. In habit it is most like 

 Seligeria, recurvata, but that has more setaceous leaves with different areolation, and 

 a shorter, rounder capsule. 



35. HEDWIGIA Ehrh. 



Stems forked, with lateral innovations. Leaves broad, oval, 

 nerveless. Capsule immersed or very shortly exserted, roundish, 

 gymnostomous ; calyptra small, fugacious ; lid short, obtuse. 



A genus consisting of two species, which has been variously 

 located, but seems most at home under Grimmiaceae. These two 

 species are sometimes treated as generically distinct, but the 

 distinguishing characters are not of great importance, and I have 

 admitted the later, perhaps less usual arrangement. The leaves 

 have some resemblance in form and areolation to Cryphsea 

 heteromalla, but there the agreement ends. 



{Leaves with hyaline points, coarsely papillose /. ciliata 

 Leaves without hyaline points, scarcely papillose .2. imberbis 



1. Hedwigia ciliata Ehrh. (Bryum ciliatum Dicks. : Hedwigia 

 albicans Lindb.) (Tab. XXIV. I.). 



In small or wide patches, of a glaucous green, and usually 

 hoary, the tufts very easily breaking up when gathered. Stems 

 rather slender, at first erect, then elongated and procumbent, 

 rigid when dry, slightly forked and with shorter lateral branches, 

 1-4 inches long, denuded at base. Leaves when dry imbricated 

 with the apex recurved, often falcato-secund , when moist 

 spreading, often secund, especially on the procumbent stems, 

 concave, nerveless, ovate, acuminate and tipped with a long or 

 short, wide hyaline point, which is spinosely denticulate at the 

 edges ; margin recurved below, slightly sinuose ; cells strongly 

 papillose, at mid-base yellow, narrow-linear with the lateral walls 

 incrassate and somewhat porose ; towards the margin the cells 

 are shorter, wider, sub-quadrate or rectangular with sinuose 

 walls, more pellucid, at basal angles often larger, quadrate, 

 brown ; upper cells in regular longitudinal rows, ovate, hexagonal 

 or sub-quadrate, all incrassate and usually angular. Capsule 

 sub-sessile, immersed ; perichaetial bracts ciliate on the margin 

 towards apex ; calyptra small, only covering the lid, conical, 

 usually sub-cucullate, fugacious ; capsule globose or slightly 

 oblong, wide-mouthed and truncate after the fall of the lid, 

 yellowish with a red mouth, smooth, annulus none; lid convex, 

 sometimes mamillate ; peristome none. Autoicous. 



