MERCEYOPSIS, A NEW GENUS OF MOSSES 299 
differentiated marginal cells and with the basal hyaline cells 
rarely reaching high up in the toes From Hyophila in the 
absence of central strand, the capsule elliptic, not cylindrical, 
with the exothecium composed of Hans -walled lax hexagonal cells, 
not rectangular and incrassate. The figures of the capsules in the 
two SW (Tab. 507, 3d, e; 508, 5d, e) will help to ERY this 
char; 
The ‘faligwiig may serve as a key to the species :— 
apsule angled angulosa 
He smooth 
9 2{ GRP psule narrowly elliptic; leaves acute... .......:ssssesees sikkimensis 
Capsule widely elliptic, wide-mouthed 3 
eee cells papillose, basal reaching high up in the leaf...longirostris 
3 vpper nee i basal few, rarely occupying more than one- ee 
“oie nue less than 2 mm. long, incurved when dry 
4 hymenostylioides 
Leaves above 2 mm. long, G@lsped when dry 5 
5 Upper cells rounded, pacar pellucid 6 
Upper cells angular, scarcely incrassate 7 
{iw obtuse or inte shortly pointed; rectangular basal a very 
6 ucida 
Leaves acutely pointed, basal cells numerous, distinct .. ig teens ig 
7 Cells of exothecium 25-50 » wide minuta (type) 
Cells ng exothecium 12-25 B wide var. subminuta 
upper ce apillz, and the basal cells extending 
for a considerable distance up the leaf; but the form and structure 
of the capsule, &c., are precisely as in the present genu 
t may be remarked that the combination Eiendipinies 
longirostre Griff., cited by — re ae Bry.), was not employed 
y Griffith and has not been 
i panei eighteen (Griff. Broth. & Dixon 
ii. Resch sev, f. iii 
ed git Mitt. M. eo Or. on par 37 (1859). 
Hab. SG. gi: etenecee a 
