Analytic Keys to the Species of Mosses. 
27 
Costa excurrent. 
Seta short, capsule acutely beaked. . . E. stenophyllum, 7. 
Seta 0, capsule blunt pointed. 
Leaves gradually long-acuminate, slightly and irreg¬ 
ularly serrate at apex E. crassinervium, 2. 
Leaves with a long hyaline spinulose arista . E. spinulosum, 3. 
Leaves papillose both sides . . . E. papillosum, 4. 
Leaves long-spinulose on both sides E. liystrix, 5. 
SPHJERANG-IUM, p. 40. 
Leaves papillose on both faces S. Schimperianuih, 4. 
Leaves smooth or papillose on back. 
Margins reflexed, plants triquetrous S. triquetrum, 3. 
Margins almost plane, plants round or tetragonal. 
Lower leaves ecostate.S. rufescens, 2. 
Lower leaves costate.S. muticum, 1. 
PHASOUM, p. 41. 
Capsule sub-globose, apiculate. 
Leaf margins plane or incurved, denticulate . P. Caruiolicum, 1. 
Leaf margins reflexed, quite entire ... P. cuspidatum, 2. 
Capsule ovate- or oblong-lanceolate ... - P. bryoides, 3. 
PLEURIDIUM, p. 43. 
Inflorescence paroicous. 
Costa reaching the obscurely serrate apex . . P. subulatum, 1. 
Costa excurrent into a smooth awl-shaped point . P. Ravenelii, 2. 
Inflorescence autoicous. 
Upper leaves long subulate. 
Entire except at apex.P. alteruifolium, 3. 
Serrulate from middle upward .... P. Bolanderi, 5. 
Upper leaves abruptly short pointed . . . . P. Sullivantii, 4. 
BRUCHIA, p. 45. 1 
I. Collum 0. 
Seta very short.B. palustris, 1. 
Seta exceeding capsule.B. Beyrichiana, 5. 
[B. brevicollis may be sought here.] 
1 This key must be quite imperfect, since the figures are so few, descriptions so imper¬ 
fect and specimens so inaccessible that it is impossible to ascertain the characters in many 
’ instances. 
