— 69— 
sicht der Arten with F. bryoides (L.) Hedw. and F gymnandrus Buse, of 
which he makes a species also. It is marked by an asterisk as not yet found 
but likely to occur within the area his work embraces, and consequently is not 
fully described. (Kryp. Flora der Mark Brand. Laubmoose 2 : 166, 1906.) 
This rank I take to be given it also by the way it is labeled in the Herbarium 
of Columbia College. Roth makes it a variety of F bryoides , as also Lim- 
pricht; Husnot a variety of F. incurvus\ Boulay one of cycle of forms, 
including incur v us, eras sipes, pitsillus and Bambergeri , all closely allied to 
F. incurvus. Dixon considers it a form or sport of F. bryoides\ Barnes both 
this and F. synoicus sports of F. incurvus. (A Revision of North American 
Species of Fissidens, Bot. Gaz. 12 : 31, 1887.) Here are three main conclu- 
sions, (a) a species, (b) a variety, form or sport of F bryoides , (c) a variety or 
sport of F. incurvus. 
Since I did not obtain specimens of F. inconstans from any European 
locality, the statements in this paper so far as based on examination of plants 
refer to the collections from Colorado and Glenwood, There is the possibil- 
ity that they may not be the equivalents of the European moss, though this 
seems probable. From the provisional name proposed by James he had his 
doubts. The plants at Glenwood were first collected October 24, 1899. Hav- 
ing found the synoicous plants in a packet of Gymnostomum calcareum 
obtained at Lockport, 111., June 29, 1905, but examined some months later, I 
again visited the Glenwood station April 12, 1906, and fortunately found 
mature plants, since the first collections were all immature. They were in 
full fruit, the opercula mostly gone, the capsules frequently injured or broken 
off from rough usage in the winter. They showed a moss fruiting in the cold 
season of the year, quite in contrast with the synoicous form from Lockport, 
not so far advanced the last of June. They were associated with F. cris- 
t'atus , Dicranella heteroilialla , Mnium cuspidatum and a species of Anomo- 
don. A full description of the Glenwood and the Colorado specimen is given 
below, illustrated by a drawing of plant, leaf, and its terminal portion from 
the Glenwood specimens, Plate IX. Figs. 8-10. 
Fissidens inconstans Schimp. Plants caespitose or gregarious, bright 
green. Stems 2-10 mm, high (mostly 3-6 mm.), declined at base or ascending, 
with copious rhizoids, some as long as the stems. Leaves 6-20 pairs, Ungulate 
to oblong-lanceolate, acute to obtuish and apiculate, ^.9-1.6 X 0,2-0. 4 mm. with 
a paler cord-like margin 2-4 cells wide extending to the point or ceasing just 
below, sometimes wanting on the lower part of the dorsal lamella, frequently 
loosened and detached part way. Vaginant lamina extending to the middle 
of the leaf-complex or a little beyond. Costa percurrent. Cells irregularly 
quadrate to polygonal, 8-14 ju. in diameter, the basal larger, nearly quadrangu- 
lar, 15-30 ju long. Autocious. Male flowers axillary on the middle or lower 
part of the stem: antheridia few, 1-2 or more, without paraphyses. Peri- 
gonial leaves 2-4, broad oval, abruptly narrowed to a point. Inner peii- 
chaetial leaves short, ovate to broad oval, acute or acutish, the outer like the 
stem leaves. Archegonia 2-8, slender, without paraphyses. Sporophyte 
terminal on the main stem or on short lateral branches. Seta dark red to pur- 
