100. marsILEACE2.—101. Lycopopiacex. 417 
Suborder III. Osmundacee. Tribe VI. Osmundee. 
16. Osmunpa Linn. Flowering-fern. 
1. O. regalis (L.) ; fronds bipinnate, pinnules oblong nearly 
entire dilated and slightly auricled at the base, clusters panicled 
termima]l.— FE. B. 209. N. 331.—Fronds erect or drooping, 1—8 
feet high.—Boggy places. P. VII.—IX. 
Subord. IV. Ophioglossacee. Tr. VII. Ophioglossee. 
17. Borrycurum Sw. Moon-wort. 
1. B. Lunaria (Sw.) ; frond pinnate solitary, pinne lunate or 
fanshaped notched or crenate.—E. B. 318. N. 137.—Height 
3—6 in. Pinne sometimes deeply notched, occasionally bearing 
a few theca. Fronds usually solitary, but sometimes there are 
two on the same stalk.—Pastures. P. VI. VI. 
18. OrpuiocLossum Linn. Adder’s-tongue. 
1. O.vulgatum (L.); frond ovate obtuse.— EF. B. 108. N. 349. 
—Height 4—12 im., erect. Spike clubshaped, usually rather 
longer than the frond, sometimes very long.—Pastures. V. VI. 
Order C. MARSILEACEA. 
Creeping plants with alternate erect leaves having a circinate 
vernation. Fructification consisting of globular nearly sessile 
coriaceous bodies with 3 or 4 cells and containing sacs including 
either other bodies that germinate or loose granules. 
1. Prnuuarta. Involucres solitary, nearly sessile, globose, 
coriaceous, 4-celled. Cells containing bodies of 2 kinds, 
granules and membranes containing minute grains. 
1. Pinutaria Linn.  Pillwort. 
1. P. globulifera (L.).—E. B. 521. N. 393.—Rhizome slender, 
creeping, producing leaves and roots at regular intervals. L. very 
slender, erect. Inv. slightly stalked, axillary, nearly spherical, 
hairy.—Margins of ponds and lakes. P. 
Order CI. LYCOPODIACE. 
Leafy plants with simple imbricated leaves; or stemless with 
erect subulate leaves. Fructification of axillary sessile thecw 
