— 8 — 
F. seriata Lindb., but differs from it by its plicate leaves, with less distinct 
alar cells. 
Climacium Americanum Brid. var. pseudo-Kindbergii Card. & Ther. 
Habit in all respects of C. Kindbergii but the areolation agrees exactly 
with C. Americanum. 
Missouri: Paw Paw Junction, on old log; Pleasant Grove, on wet bank 
(C. F. Bush, 1897 and 1899). 
Contrary to the opinion of Dr. A. J. Grout, we think that C. Kindbergii 
cannot be distinguished specifically from C. Americanum. We have speci- 
mens on which the distinctive characters become attenuated. The plant of 
which we make the variety psuedo-Kindbergii is just one of these forms. 
Brachythecium subasparrimum Card. & Ther. 
Loosely intricate-caespitose, yellowish-green, rather glossy. Stem slen- 
der, 3-6 cm. long, prostrate, radiculose; branches unequal, attenuate, ascend- 
ing, pinnate. Stem leaves erecto-patent, deltoid from a decurrent base, 
gradually longly and narrowly acuminate scarcely plicate, nearly smooth, 
1.8-2 mm. long, 0.75 mm. broad, margin slightly reflexed at base: subentire 
or slighly serrulate at base; costa narrow, 36/* thick at base; median cells 
linear, narrow, 60-85/* long, 6/* broad, basal cells laxer, hyaline, rectangular 
or subhexagonal ; branch leaves oblong, long and narrow- acuminate, neither 
deltoid nor decurrent, more distinctly plicate, 1.6 mm. long, 0.5 mm. broad, 
margins revolute for a greater or less distance, minutely denticulate above. 
Perichaetial leaves ecostate, ovate from a clasping base, abruptly narrowed 
into a long slender, entire, spreading or reflexed acumen. Capsule inclined 
or subhorizontal: ovate- gibbous, slightly constricted under the mouth when 
dry, 1.7 mm. long, 0.8 mm. broad; operculum unknown. Seta dark red, 
1.5 cm. long, very rough, densely covered with high papillea. Peristome 
perfect, cilia appendiculate. Spores 15 /* thick. Apparently dioicous (male 
flowers unknown). Plate XXIV. 
British Columbia: New Westminster (A. J. Hill, 1902: herb, C. F. 
Baker). 
By the habit, dioicous inflorescence and very rough pedicel this moss 
stands near B . asperrimum (Mitt.) Kindb. and A*. Was king tonianum Eaton, 
differing from both in having 'the leaves scarcely plicate, almost smooth 
with the acumen much longer and narrower, and the borders very slightly 
denticulate or subentire and partly revolute. 
Plagiothoecium sulcatum Card. & Ther. 
Monoicous in rather lax, depressed tufts, glossy. Stems slender, creep- 
ing; branches ascending, subarcuate, about 1 cm. long, rather flattened. 
Branch leaves loosely subdistichous-homomallous, 1.2-1.5 mm. long, 0.4-0. 5 
mm. broad, not at all decurrent, lanceolate, gradually long-acuminate, mar- 
gins plane, serrulate from the middle, sometimes from the base ; costa double, 
short or sometimes longer with one fork reaching almost to the middle ; cells 
narrowly linear, 70-90/* long, 6/* broad, the lower cells shorter, laxer, not 
porose, 20-40/* long, 12-15/* broad. Male flowers growing near the female. 
