250 BOTANICAL GAZETTE [ocToBER 
Hypnum stereodon confervoides Bridel, Bry. Univ. 2: 583. 1827. 
Leskea confervoides Spruce, Lond. Jour. Bot. 4: 182. 1845. 
Amblystegium confervoides Bruch and Schimper, Bry. Eur. Ambly. 6. £7. 
2. 1853.—Schimper, Syn. Musc. (1st ed.) 590. 1860. (2d ed.) 707. 1876.— 
Milde, Bry. Siles. 323. 1869.— DeNotaris, Epi. Bry. Ital. 156. 1869.—Hart- 
Pl.6: 218. 1892.— Husnot, Musc. Gall. 357. £7. 702. 1892.—Dixon & Jame- 
son, Stud. Handb. 442. A/. 55. 1896.— Braithwaite, Brit. Moss Fl. 3: 27. p/ 
1896. 
Kae Amblystegium confervoides Austin, Musc. Appl. 368 (Herb. 
is.). 
Hypnum minutissimum Sulliv. & Lesq. Musc. Bor. Am. (2d ed.) 520 
(Herb. Columbia Univ. in part). 
Hypnum confervoides Macoun Can. Musci. 317 (Herb. Wis.). 
TYPE in Herb. Bridel. 
Gametophyte bisexual, small, cespitose, in thin closely adhering 
patches, dark green: stems very slender, 60 to gow in diameter, 
not angled, closely and subpinnately branched ; brancheso.5 to cigs 
long, erect or ascending; central strand none; cortex of two 
layers of cells, 4.5 to10.5min diameter, differentiated from ground 
tissue only by the size of cells, those of the latter tissue 9 to 144 
in diameter, thick walled: leaves remote, ovate to ovate lance- 
olate, 105m wide by 255 long, varying in width from 80 to 130# 
and in length from 200 to 3004, attaining their greatest width in 
the basal sixth but above the line of insertion, straight or rarely 
falcate, acute or acuminate, acumen usually stout, erect spreading, 
appressed when dry, margin entire, rarely irregularly subdenticu- 
late, ecostate; leaf cells parenchymatous at base and in the 
margins in the lower half, prosenchymatous in median portion of 
lower half and throughout all of the upper half, cells in alar 
region irregular, quadrate, triangular, or slightly transversely elon- 
gated, about three rows extending up the leaf five to ten cells, 8.2¢ 
wide by 7.5 long, varying from 7 to 10.3" long and from 6 to 
9.4m@ wide, cells above becoming elongate rectangular (1 :2-4), 
cells in the median and apical regions sometimes regular, oval 
to elliptical hexagonal, more or less flexuose, oftener irregular, 
oval, triangular, hexagonal, or rhomboidal, 74 wide by 21.5F long, 
