CRYPTOGAMIA FiLiCES. Cheilanthes. 
On rocks : Pensylvania to Virginia and on the Missouri. 
. July, v.v. A handsome very small fern, covered 
with long brownish hair. 
2. C. frondibus triplicato-pinnatis, pinnulls ovalibus distinc- 
tis apice crenatis aut emarginatis subtus dealbatis. 
On rocks, on the banks of the Missouri, !(., July. v.s. 
A very delicate small fern, very much resembling 
C. tenuifolia. 
735. DICK SONIA. L'Herit. sert. angl. 30. 
1. D. frondibus bipinnatis, pinnulis oblongo-lanceolJ'tis pin- 
natifidis, laciniis margine superiore inciso-dentatis, ra- 
chibus pilosiusculis. Willd. sp. pi. 5. p.AS4, 
D. pubescens, SchhuhrJiLic. p. 125. t. 131. 
Polypodium pilosiusculum. Muhlh. in litt. 
In shady woods, among rocks : Pensylvania and Virginia. 
11. V. V. A foot or more high, resembling Jspidiiim 
dilatatum. 
736. HYMENOPHYLLUM. Smith act. taur. 5 . p. A\S. 
1. H. frondibus pinnatis, pinnis infimis majoribus, supe- 
rioribus sensim minoribus pinnatihdis, laciniis lineari- 
bus obtusis bifidis ciliatis, venis hirtis, rachi stipiteque 
alatis ciliatis. Willd. sp. pi. 5. p. 5 \g. 
Trichomanes ciliatum. Swartz, prodr. 130. 
In shady forests, on the trunks of old trees : Pensylva- 
nia and Virginia. 1/ . v. v. 
V. HYDROPTERIDES. 
737. ISOETES. Gen. pi. 1020. 
I , I. frondibus subulatis semiteretibus. Willd. sp. pi. 5, 
p. 534. 
Icon. Schkuhr Jilic. t. 173. FI. dan. 191. Dill. muse. 
U 80./. 1. 
On rocks, on the bottom of rivers : New York, in the 
Oswego river, near the Falls. 1/ . v. v. This sin» 
gular plant, resembling a zoophyte, is about two inches 
high. 
071 
dealhata. 
pilosiuscula. 
ciliatum. 
lacustris. 
