159 
Neckera dendroides Brid. Musc. Rec. 27: 14. 1797. 
Gametophyte bright glossy green, 7-9 cm. high; branches 
spreading, flexuous; branch leaves loosely imbricate, 2 x 0.7 
mm., the upper oblong-lanceolate ; lower ovate-lanceolate, denti- 
culate at base, sharply serrate above, obtuse, bisulcate, costate 
nearly to apex ; basal angles sometimes slightly enlarged ; median 
cells linear-rhomboidal to linear-hexagonal, 7—10: 1; alar and apical 
cells much shorter and broader; stem leaves larger, 2-3 mm. 
long, ovate, entire, apiculate: perigonial leaves entire, concave ; 
outer suborbicular, ecostate; inner short-oblong, narrowed at 
base, apiculate, often slightly costate; antheridia oblong; para- 
physes numerous, longer than the antheridia: perichaetium about 
5 mm. long ; inner leaves oblong to oblong-ovate, slightly serrate 
at the apex, long-acuminate, thinly costate, costa often short or 
wanting ; leaf-cells linear above, rhomboidal and brownish yellow 
below.  Sporophyte 2.5—3.5 cm. high ; seta reddish-brown ; capsule 
lighter in color, cylindric, about 4 mm. long, 3—4: 1 ; operculum 
often remaining attached to columella; peristome reddish-brown ; 
spores I3—22p. Fruit rare, maturing in autumn. 
Type locality European, probably Swedish. 
Wet ground, borders of streams, swamps and lakes, especially 
in the mountains; more common than is indicated by Lesq. & 
James in the Manual. Ranging through the northern and west- 
ern part of the continent from New Brunswick to St. Paul Island, 
Behring sea ; south to New Jersey, Colorado and California. Not 
recorded from Pennsylvania or the North Central States. 
ILLUsTRATIONS.—Dillenius, Hist. Musc. AX. go. f. 48; Web. & 
Mohr., |. c.; Schwaegr. Suppl. 1*: AJ. 87; Br. & Sch. Bryol. Eur. 
pl. 437; Hook. & Taylor, Musc. Brit. Ed. 2. p/. 25; Husnot, 
Musc. Gall. A. go. 
ExsiccATI.—Drumm. Musc. Am. 230; Austin, Musc. Appal. 
286; Ren. & Card. Musc. Am. Sept. Exsic. 237. 
Ia. CLIMACIUM DENDROIDES OREGONENSE Ren. & Card. Bot. Gaz. 
I5: 59. 1890. | 
“ Differs from the type in the leaves narrowed at base, less ser- 
rate at apex, sometimes subentire.” 
