52 BOTANICAL GAZETTE [JULY 
HypnuM CHRYSOPHYLLUM Brid. var. BREVIFOLIUM Ren. et Card. 
in Bull. de Pherb. Boissier 4:19 (Musci Am. Sept. Exsicc. no. 248). 
—Leaves shorter and areolation somewhat looser than in the 
typical form. 
District of Columbia: Rock creek (¥. M. Holzinger, 1891). 
Sterile specimens. | 
Hypnum implexum.—Tufts depressed, light green. Stems 
intricate, pinnately ramulose, branchlets hooked, fastigiate above. 
Leaves falcate-secund, from a broadly ovate-deltoid base rather 
suddenly constricted into a narrow subulate acumen, plane on 
the margins, quite entire or subdenticulate at the base of the 
acumen ; costa double, short ; cells narrowly linear, those of the 
angles few but distinct, small, quadrate, greenish or pellucid. 
Flowers and fruit unknown. 
Labrador: Seal Island (Rev. Arthur C. Waghorne, 1893). 
Allied to H. hamulosum Sch., but more robust, and distinct by 
the light green tint; the leaves broader at base and more sud- 
denly constricted into a subulate acumen, and the alar cells more 
numerous and more conspicuous. Much resembling the small 
green form of H. cupressiforme L., but in this the leaves are nat- 
rower and the alar cells still much more numerous and conspicu- 
ous, 
Hypnum subeugyrium.—Moncecious, resembling H. eugyrium 
Sch. var. Mackayi Sch., from which it differs by the alar cells of 
the leaves small, quadrate, not forming excavate auricles and 
the capsule exannulate. From the forms of H. palustre L. hav- 
ing the leaves subimbricate, it is distinguishable by the minutely — 
denticulate apex of the leaves and by the costa always double 
and shorter. 
Newfoundland : Exploits (Rev. A. C. Waghorne, 1893): 
HyYPNUM ORBICULARICORDATUM Ren. et. Card. in Bull. de V’ herb. | 
Bossier 4:19 (Musci Am. Sept. Exsicc. no. 249). Tufts very 
soft, pale lurid-green above, decolored whitish-yellow and 
brownish-variegated below. Stems slender, erect, 4-9™ high, 
simple or sparingly branching, not radiculose, cuspidate at apex. 
Leaves soft, erecto-patent or very loosely imbricate, subundu- 
