- 4 8 — 
Sphagnum fuscum (Schimp.) Kling. 13 — Alaska to Wash, and 
Colo.; northeastern N. Amer. (PL XXII). 
4b. Plants reddish-green rather than brownish-green. 
5a. Outer surface of the branch-leaves with small roundish strongly- 
cringed pores at }/z-% the distance from the leaf-base. 
Sphagnum warnstorfii Russ. — Alaska to Colo.; northeastern N. 
Amer. (PI. XXII). 
5b. Outer surface of the branch-leaves with much larger and more eh 
liptic pores. 
. 6a. Most of the hyaline cells of the upper halves of the stem-leaves 
not divided by fibrils. 
Sphagnum capillaceum (Weiss.) Schrank. 14 — Alaska to 
Wash, and Colo.; northeastern N. Amer. (PI. XXIII). 
6b. Most of the hyaline cells of the upper halves of the stem-leaves 
divided by fibrils. 
Sphagnum capillaceum tenellum (Schimp ) Andr. 15 — Alaska 
to Wash.; northeastern N. Amer. 
3b. Hyaline cells of the branch-leaves bulging their thickness on the 
outer side; (4) plant greenish or brownish or somewhat purplish; (5) 
outer surface of the branch-leaves with large elliptic pores. 
Sphagnum plumulosum Roell. 16 — Alaska to Calif.; northeastern 
N. Amer. (PI. XXIII). 
University of Washington, Seattle. 
JAGERINOPSIS SQUARROSA, N. SP . * 1 
E. G. Britton 
Plants bright green, glossy, climbing on trees; primary stems slender, de- 
cumbent and rooting, with small appressed bract-like leaves, which are only 
.5-1 mm. long, lanceolate-acuminate, ecostate, and entire, or with a short faint 
costa; secondary stems stout, erect, red, simple and unbranched, 1-2 cm. rarely 4-5 
long, rarely tapering off into slender flagellate innovations; leaves crowded, 
spreading, 1.5-2 mm. long x 1-1.33 mm. wide, rarely wider than long, broadly 
ovate or cordate, carinate or concave; apex variable, acute or acuminate, ser- 
rulate, not subulate, often recurved; margins minutely and obscurely serrulate 
to base, each marginal cell ending in a small tooth; costa variable, single, and 
broadest at base, or forking at apex, or rarely double and short, usually extend- 
ing to less than pi the length of the leaf, rarely basal cells largest, irregular 
and porose; alar cells slightly different, denser and yellow or brown with thick 
walls, median and apical cells narrowly linear-vermicular, 27-54/A long by 2-4/A 
wide; all porose and smooth. Dioicous? only female plants seen. Archegonia 
in small lateral buds about 1 mm. long, with acuminate, serrulate, ecostate 
leaves and few paraphyses. 
13 5. vancouveriense Warnst. 
14 S. acutifolium Ehrh. 
15 S. rubellum Wils. ; S. tenellum Kling. 
16 5. subnitens Russ. & Warnst. 
1 See Bryologist 21: 27. 1918. 
