636 
iissedum. 
virgifikum. 
gracile. 
palmatum. 
CRYPTOGAMIA STACHYOPTERIDES. Botrychium. 
In open woods : Pensylvania and Virginia. 1/ , June, 
July. V. V. Resembles the preceding very much^ 
and is probably only a variety. 
3. B. scapo inferne unifrondoso, fronde tripartito-bipinnati- 
fida, laciniis linearibus bipartitis apice bidentatis. 
JViUd. sp. f)l. 5. p. 04. 
Icon. Schhuhr filic. t. 158. Pluh. arnalth. t. 4r2y.f 5. 
In pastures and open dry woods : New York to Florida, 
i/. June. v.v. 
4. B. hirsutum ; scapo medio frondoso, fronde subterna 
tripartite -bipinnatifida, foliolis inciso-pinnatifidis, la- 
ciniis obtusis subtridentatis, spicis bipinnatis divarica- 
lis. — fPilJd. sp. pi. 5. p. 04. 
Botrypus virginicus. Mick. jl. amer. 2. p. 2/4. 
Osmunda virginica. Sp. pi. 15/p. 
Osmunda multifida. GmeL nov. corn, petrop. 12. 11. 
/.I. 
Icon. Schhuhr jilic. t. 150. 
In shady woods, on rich vegetable soil : Canada to Ca- 
rolina. % • June, July. v. v. This is the largest of the 
species here described ; it is known by the name of 
Rattle Snake Fern, probably from the circumstance of 
growing near the places where those venomous ani- 
mals generally are found. 
5. B. glabrum ; scapo medio frondoso, fronde tripartito- 
bipinnatifida, laciniis inciso-subpinnatifidis acutis sub- 
dentatis, spicis graeiljbus pinnatis erectis. 
In shady fertile woods: Virginia. 1/. June. v. v. 
This species approaches near to the preceding in its 
first appearance, but is by far a smaller and more 
slender plant, besides the other distinctions. 
HI. SCHISM JTOPTERIDES, 
718. HYDROGLOSSUM, Willd. sp. pi 5. p. 77. 
Ophioglossum. Rinn. 
I, K. caule f.exuoso-scandente, frondibus conjngatis cor- 
datis quinquelobo-palmaris, lobis lanceolatis integerri- 
mis obtusis obsolete sinuatis, spicillis terminaiibu^ 
composite paniculatis oblongo-linearibus, — IVilld. sp. 
pi. 5. p, 84. 
