" 
eCRYPTOGAMIA srAcRYoPTERID£s. Botrychium. a 
In open woods: Pensylvania and Virginia. Y. June, 
July. v.v. Resembles the preceding very mych, 
andis probably only a variety, —— 
; E inferne unifrondoso, fronde tri io-bipinnet: 
* fida, laciniis linearibus bipartitis die bidentatis. 
‘Willd. sp. pl. 5. p. 64. 
Icon. Schkuhr ilic. t. 158. Pluk. amalih. t. 427. f. 5. 
In pastures and open dry woods : New York to Florida. — 
E. Y. June. v.r: 
4. B. hirsutum ; scapo medio frondoso, fedes subterna . 
*d. “sripartito-bipinnatifida, foliolis. inciso-pipnatifidis, la- 
" ciniis obtusis subtridentatis, spicis bipinnatis divarica- 
tis.— Willd. sp. pl. 5. p. 64. č 
rtd? us. Mich. fl. amer. 2. p. 274. 
i a. Sp. pl. 15796. = 
Ls ifida, Gmel. nov. com, eee, 12. #21. 
fil. 
Icon. paras fic. 1.156. 
In shady woods, on rich vegetable soil: Canada to Ca- 
rolina. 4. June, July. v. v. This is the largest of the - 
here described ; it is known by the 
Rattle attle Snake Fern, probably from the circumstance of 
growing near the places where those venomous ani- 
T mals generally are found. - 
gracile. 5. B. glabrum ; scapo medio frondoso, fronde tripartito- 
i bipinnatifida, laciniis inciso-subpinnatifidis acutis sub- 
dentatis, ‘et gracilibus pinnatis erectis. 
In shady le woods: Virginia. 2. 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." 
Hl SCHISMATOPTERIDES. 
718. HYDROGLOSSUM. Willd. sp. ph 5. fae: 
Ophioglossum. Linn. 
1. H. caule flexuoso-scandente, frond ibus conjagati cor- 
