95. MARSILEACE.C. 9fi. LYCOPODIACE.E. 
41/ 
Order XCV. MARSILEACE/E. 
Creeping plants with alternate erect leaves having a circinate 
vernation, rrnctifieation 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. PiLULARiA. Involucres solitarj', nearly sessile, globose, 
coriaceous, 4-celled. Cells containing bodies of 2 kinds, 
granules and membranes containing minute grains. 
1. PiLULARiA Linn. Pillw'ort. 
1. P.glohulifera{\j.). — E. B. 521. IV. 393. — Rhizoma slender 
elongated, creeping, producing leaves and roots at regular inter- 
vals. L. very slender, erect. Involucres (sporocarjrs) sbghtly 
stalked, a.xillary, nearly spherical, hairy. — Margins of ponds and 
lakes. P. 
Order XCVI. LYCOPODI ACE/E. 
Leafy plants with simple imbricated leaves; or stemless with 
erect subulate leaves. Fructification of axillary sessile thecae 
with 2 or 3 valves and no ring, incluiling minute powdery matter 
or sporules. 
* Capsules not opening. 
1. IsoETES. Fructification inclosed within the swollen base 
of the leaves. Sporules of two kinds attached to filiform 
receptacles. 
** Capsules bursting. 
2. Lycopodium. Caps. 1-celled, 2-valved, containing pow- 
der; or 3-valved, containing 1—4 granules. 
1 . IsoETES Linn. Quillwort. 
1. I. lacustris (L.); 1. subulate roundish-quadrangular with 4 
longitudinal jointed tubes. — E. B. 1084. Hook. Lond. t. 131. 
N. 381. R. vii. 1. 1. — Rhizoma a blunt tuber. L. slender, broad 
and flat at the base but elsewhere between cylindrical and quad- 
rangular. There is still some doubt about the internal strac- 
tiue of the capsules. — Bottom of lakes and ponds in hilly di- 
stricts. P. 
2. Lycopodium Linn. 
* Caps, all \-celled. Sporules like powder. Lycopodium Koch. 
1. L. clavatum (L.); 1. scattered incurved with a filamentous 
point, spikes stalked 2 or 3 together cylindrical, scales ovate- 
triangular membranous finely inciso-serrate. — E. B. 224. N. 353. 
