25. ISOETES L. 
The name is derived f rom irok^ annus ^ icros, similis 
according to Linnaeus (Phil. Hot.) who also states 
(Iter, scan.) that the name is old and was formerly 
applied to Sedum, {see also Plin. Hist.) 
Mostly small, aquatic, amphibious or terrestrial plants. 
Stem a fleshy depressed corm. Leaves avvl-shaped or 
linear, dilated at the base. Sporangia orbicular or ovoid, 
sessile in the axils of the leaves. Spores of two kinds. 
t Leaves j-ij cm, lojig. 
saccharata Engelm. PI. 9. 
Isoetes saccharata Engelm. 1867. in Gray, Man. 
e l. 5. 676. ed. 6. 699. 6^y'///^/'zt^. in til, Fl.i:47; 
Nit. Ferns 145; in Britt. Man. 28. Clute, Fern 
Allies 240. 
QUILIAVORT. 
Plants grovs^ing in colonies ; leaves linear, olive-green 
in color, 5-13 cm. 1., 10-20 in a cluster ; sporangia oblong 
5 mm. or less in length. 
Along river banks between tidal limits. 
In various localities along Chesapeake Bav, from Wicomico 
River northward. Along the Polcmjic River ( Eastern Branch) 
Fonrmile Run, .S/^^/^ ; Ilnntino: Creek, Covillc, Vasey, Notley 
Hall, Mt. Vernon, Coville\ near River View. 
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