115 
tata; coronula persistente, cellulis non elongatis ; nucleo fusco, 33SM 
longo and 260/^ lat., 7-8-striato, striis acutis, sub-prominulis. An- 
theridio 275-300/i diametro, longe stipitato. 
This interesting species appears to be intermediate between T. Call- 
formca and T. intricaia. From the former it differs in the fewer seg- 
ments of the terminals, and from the latter in the simple rays and 
smaller sporangia and antheridia. It has a loose habit of growth, the 
fertile verticils having comparatively long peduncles, not crowded in- 
to so dense heads as in other species- ^ The fundus of the verticils is 
crowded with sporangia and antheridia on long stipes, which seem to 
take the place of leaves. There »are but few leaves, generally four, 
to each verticil, with two shoots of new verticils (as shown in Plate), 
The peduncle of the fertile head measures 2.^0^''^' from the verticil 
to the first fertile whorl, a^o'"'"' to second whorl, lso""*"- to third 
1.20"^* to fourth, showing the looseness of the compound fertile head. 
In TolypellcB generally, the separation of the verticils of the fertile 
heads is very slight, so that a compact mass is formed. 
I hav^ received but one specimen of this species, collected by Mr. 
T. S, Brandegee, in a pond near Mt. Carbon, Elk Range, and for- 
warded to me by Mr. John H. Redfield of Philadelphia. 
T. intricata, Leonh. — Monoecious. Robust, 0.20 — o.4o"'- high; 
growing in mossy bunches; light green, in Age becoming greyish or 
brown with incrustation, and brittle. Stem much branched from the 
base up. Lower verticils long-leaved, spreading; the upper shorter, 
compacted into a thick head (nest-like). Verticils composed of 6-7 
large leaves, with as many more small (accessory) ones. Sterile 
leaves once divided, the fertile ones mostly twice divided. Fertile 
leaves with 2-3 nodes producing leaflets; leaflets of unequal length, 
4-5-celled, those of the first leaf-node divided, fertile, attenuated to 
the tip, the terminal cell short and acute. Sporangia on the nodes 
of the leaves and rays, and very numerous in the fundus of the ver- 
ticil. Coronula persistent; nucleus light brown, oval, with lo-ii, 
prominent angles. Antheridia 320-350/^ in diameter. 
This species germinates in the fall and fruits in the following 
spring, ripening by the end of April or in May, and quite dying 
Qown and disappearing by the beginning of June (in Europe). 
I have received one specimen of this species from Canada (a 
typical form), and it is to be expected from various parts of the 
country, 
. T. INTERTEXTA, nov. sp. — Statura robustior, 0.4-0.5"- alt., color 
l^^.l'^^^^^^oi^c demum cinerascens, Verticillis inferioribus remotis, 
lohis sterilibus 8, 60-80™°"- long,, divisis; terminalibus 4-celIularibus, 
^cutis. Folia fertilia duplicato (vel rarius triplicato) divisa, nodis 
jructificationem gerentibus duobus; radiis divisis, fertilibus 4-cellu- 
lanbus (rarius 3-5), acutis, mucrone 85/^ long., 55-65>" lat. Spor- 
^"gia in fundo verticilli et in divisura foliorum aggregata, coronula 
^longata, sub-persisente; nucleo ovali, 45o-475>" l^"g"» ^^^co, lo- . 
gyrate, striis acutis, sub-prominulis, Antheridia brevi-stipitata, 320- 
350/^ diametro. 
This large and handsome Tolypella differs from its allied species, 
^- ^ntricata, by its habit, its large sporangia, its peculiar coronula and 
