MARSUPELLA 87 
gated radially, the dorsal margins usually subrevolute: 9 bracts 
3 or 4 pairs, rather abruptly 2-6 times larger than the leaves, 
nearly always distinctly marginate with radially elongated often 
more highly colored cells 25-45 и in greatest diameter, median 
cells oval-elliptical, 25-50 м; inmost pair of bracts finally the 
largest, more or less highly connate, forming an exserted peri- 
anth-like, cylindrical or goblet-shaped involucre from a some- 
what obconical base, emarginate-bilobed (rarely trilobed) %-% 
their length; outer bracts transversely inserted, erecto-patent, 
bilobed 1-1% their length, otherwise entire or slightly repand, the 
lobes obtuse: periarth subpyriform, a little shorter than the invo- 
lucre, free in the upper third or half, with 4-6 connivent lobes at 
the mouth: calyptra mostly of two layers of cells : capsule dark 
brown, globose, .4—.45 in diameter, the walls of the cells with very 
numerous nodular thickenings ; seta 2-4 mm. long. 
On or about rocks or on exposed banks, sometimes under 
chaparral; hills and ridges of the Coast Range Mountains. San 
Francisco: Mission Dolores (Bolander), Clarendon Heights 
(Howe); Mt. Tamalpais and near Lake Lagunitas, Marin Co.; Pieta, 
Mendocino Co. (804); near Lake San Andreas, San Mateo Co. 
Often associated with Cephalosia divaricata, to which, sometimes, 
the more slender forms bear a superficial resemblance. Near Lake 
San Andreas, it grows in company with Scapania nemorosa, Nardia 
crenulata, Cephalosia Turneri, and Marsupella emarginata. It is 
always readily distinguishable from the smaller conditions of the 
last-named species by its darker color, the often distinctly succu- 
bous leaves, the larger and thinner-walled leaf-cells, the nearly al- 
Ways marginate 9 bracts, the more exserted perianth-like involucre | 
formed by the inmost pair of bracts, the fewer antheridia to each 
perigonial leaf, the smaller, darker, and more nearly spherical cap- 
sule, etc, 
All of the minute European Marsupellae described more re- 
cently by Limpricht and by Spruce seem to be abundantly distinct 
from Marsupella Bolanderi. The larger and otherwise different 
Marsupella sphacelata erythrorhiza (Limpr.) [under Sarcoscyphus 
in Cohn, Krypt.Fl. Schles. 1: 248, 431. 1877) is possibly d 
nearest ally, judging from specimens kindly communicated by 
Professor Limpricht. 224 
Тһе обеп obliquely inserted, subvertical, and distinctly uu 
bous character of the leaves in Marsupella Bolanderi serves to 
