La 
153 
3. PYLAISIELLA INTRICATA (Hedw.) Grout, Bull. Torr. Club, 23: 
231. 18590. 
Prerigynandrum intricatum Hedw. Sp. Musc. 85. pl. 18. 
1801. 
Pylaisia intricata Schimp. Bryol. Eur. fasc. 46-47. 1851. 
Hypnum intricatum C. Muell. Syn. 2: 338. 1851. 
Stereodon intricatus Lindb. Musc. Asiae-bor. 2: 151. 1890. 
Pylaisia Selwyn Kindb. Ott. Nat. 2: 156. 1889. 
Gametophyte in wide glossy-green intricate mats; stems 5-8 
cm. long, creeping, pinnately branching ; branches about 5 mm. 
long, erect or ascending, strongly recurved at tips, especially when 
dry ; branch leaves secund, especially at the ends of the branches, 
ovate-lanceolate, 0.8—1.15X0.3-0.4 mm., more or less long-acumi- 
nate, entire or subdenticulate at apex, concave, ecostate or 
costa short, thin and double; median cells linear-fusiform, 7— 
12:1; quadrate alar cells numerous, bordering the lower !4 of 
leaf; stem leaves ovate to broadly ovate-lanceolate, more ab- 
ruptly acuminate, costa short and. double; leaf-cells broader, 
linear-rhomboidal: male branches abundant; antheridia elon- 
gated-ovoid ; perigonial leaves broadly ovate-lanceolate, acumi- 
nate: perichaetium 2-2.5 mm. long, loosely sheathing; inner 
leaves oblong-lanceolate, acuminate, denticulate above, costa dif- 
fuse, reaching middle; leaf-cells linear above, looser, rhomboidal 
and strongly porose below. Sporophyte 12-17 mm. high ; seta 
dark red-brown; capsule red-brown, ovoid to ovoid cylindric, 
symmetric, slightly narrowed at mouth, 2 mm. long, 3-4:1; 
operculum conic, erect or oblique; annulus of about 2 rows of cells; 
teeth of peristome subulate-lanceolate, closely and regularly 
articulate, light yellow-brown; segments longer than the teeth, 
adherent for 24 their length, split below, united above; spores yel- 
low-brown, minutely roughened, thick walled, 18-24 », maturing 
in autumn. 
Type locality, Lancaster, Penn. oper anes A 
On trees, old logs, etc. 
Common in the northeastern United States and eastern Canada; 
Kansas, Missouri, Mississippi, Georgia (Ravenel), Florida (Chap- 
man). 
