TADOCCX 
POLYPODIUM HEXAGONOPTERUM. 
FILICES.—GvnATX. Br.  PorvropIiACEE. Kaulf. — FiricEs vere. Willd. 
GrzN. Cuang. POLYPODIUM, Linn. | Sori subrotundi (seriati, sparsi vel conferti). — Znvolucrum 
nullum. Z. 
PonvPopiUM Aerasonopterum; frondibus deltoideis bipinnatifidis, pinnis duabus infimis deflexis, 
laciniis oblongo-lanceolatis obtusis ciliatis pinnarum inferiorum profunde crenatis, reliquarum 
integerrimis, infimis adnato- -decurrentibus, soris minutis prope costam sparsis. 
Polypodium hexagonopterum. Mich. FY. Bor. Jm. v.9. p.971. Swartz, Syn. Fil. p. 40. 
Pursh, Fl. mn. v.29. p.659. JFild. Sp. PI. v. 5. D 200. Spreng. Syst. Veget. v. A. p. 57. 
P. Phegopteris. ScAkuhr, Fil. t. 20. b. ; 
Has. In Ámerica Septentrionali, a Canada usque ad Carolinam. 
Stipes erectus, spithamzeus ad pedalem, glaber, nitidissimus, hinc sulcatus, basi solummodo paleaceo-squamosus. 
Frons spithameea ad ultra, circumscriptione deltoidea, bipinnatifida; pinnis duabus inferioribus deflexis, reliquis 
horizontaliter patentibus, omnibus lato-lanceolatis, profunde pinnatifidis, tenui-pubescentibus, subtus rachibus 
costisque precipue; Jacniis oblongo-lanceolatis, paululum falcatis, inferioribus lato-crenatis, superioribus 
integerrimis, infimis adnato-decurrentibus, omnibus ciliatis reticulatim venosis, venulis soriferis. Substantia 
membranacea, tenuis. 
Sori parvi, sparsi, subrotundi. 
Capsule globosse, annulatz, brevissime stipitatze. 
Semina oblongo-reniformia, pallide flava, subpellucida. 
Fig. 1. Lacinia sorifera, subtus visa. f. 2. Capsule. f. 3. Semina :—magn. auct. 
This species of Po/ypodium seems in North America to hold the same place that P. Phesopteris 
does with us; being apparently scattered over a very great extent of that country; and having so 
far an affinity with that species, that at first sight they might almost be mistaken for the same. 
Hence it is, perhaps, that Schkuhr in the place above quoted appears to have figured the American 
P. hezagonopterum as a variety of our European 2. Phesopteris. ^ slight inspection of the sori, 
however, will at once show their distinguishing characters; for whereas in P. Phesopteris they are 
arranged in a single series close to the margin, in 2^. hezasgonopterum they are scattered without 
order upon the lesser veins near to the midrib. Schkuhr, indeed, figures the sori in a single series, 
and Willdenow describes them as solitary ; but such is not the case with perfect specimens of the 
plant :—a good representation of the plant we have therefore considered a desideratum. 
