CRYPTOGAMIA. 651 
PELUUM. Sorus marginalis, recepta- 
| n bivalve, sorum 
- includens, 
V. HYDROPTERIDES. 
Lud ISOETES. Capsula métnbranacéa; ‘non dehiscens, 
rondis basi immersa, 1-locularis. Semina angulata, 
€ ulis pluribus filiformibus inser Peo 
738. SALVINIA. Indusia imbricata, connata, capsulam 
unilocularem mentientia, Semina receptaculo cen- 
I GONOPTERIDES. 
jQUISETUM. Gen. pl. 1614. 
E caulibus sterilibus simpliciter ramosis, ramis Msi iade arvense, 
culis tetragonis, fructificationibus simplicibus, vaginis 
/lindraceis inciso-dentatis, dentibus acutis. Willd. & 
65. Willd: ap. pl. Spes 
i} ead sandy Gechde : Pensylyania- d Vitel Y. 
April, May. v. v. = 
2. E. caulibus sterilibus ERTA PRA duplicato-ramo- sylvaticum, E 
^ sis, ramis scabriusculis deflexis tetragonis, ramulis P 
& da etu, Willd. enum. 1065. Willd. sp: pl. 5, > 
alabe. Schkuhr filic. 1.166. Fl. dan. 1182. | 
- Iu low shady woods : New p to Virginia. Y.. 
AER. 9. 9.5* 2 3 
xulibus subramosis, ramis subquaternis Menos uliginosum. 
~ glabris spica cylindracea terminali. — Willd. sp. pl. 5 
: New York to Me Y. May. v. V. 
IB i - E. limosum. | m 3 ^ eg 
4k: caulibus simpliciter ramosis glabris sicat, 7 ramis palustre. 
pentagonis apice spiciferis, Willd. 1005 
Willd, sp»pl.5.p.5.. i 
