598 
cxii. marsileace^e. 
\Pilularia. 
sules indehiscent, lodged each within a cavity in the dilated base 
of the leaves ; those at the base of the outer leaves containing 
a few large sporules or seeds which are rough with minute (f. 2, 
g) points ; those at the base of the inner ones having numerous 
minute granules (f. 2, e,f ); in both the granules are inserted 
on radiating slender receptacles. — Aquatics . — Named from kjoc, 
equal or alike , and troc, the year ; or ever-green. 
1. I. lacustris L. ( European Q.) ; leaves subulate bluntly 
4-angular with 4 longitudinal internally jointed tubes. E. B. 
t. 1084: Newm. p. 381, 386. 
Bottoms of lakes in mountain districts in the north of England, 
Wales, Ireland, and Scotland. If.. 5 — 7. — There is probably only 
one species of the genus, although very variable in the length of the 
leaves, and in the plants being solitary or in tufts. Leaves cellular. 
Cormus about as large as a hazel-nut, and eaten by water-fowl. 
Although an aquatic like the Marsiteacece , the fruit is more that of 
Lycopodium. Dr. Lindley, in his Veget. Kingdom, characterizes his 
I.ycopodiacecc so as to include it, but nominally arranges it with 
Marsiteacece, 
Ord. CXII. MAR SILE ACE2E R. Br. (Tab. XII. f. 3.) 
Involucres distinct from the leaves, situated near the root of 
the plant, coriaceous ; each usually with several cells, contain- 
ing capsules of two kinds. Capsules indehiscent without a 
ring. Stems creeping or floating. Vernation circinate or in- 
volute. — Aquatics. 
1. Pilularia Linn. Pill-wort. (Tab. XII. f. 3.) 
Involucres solitary, nearly sessile, globose, coriaceous, 4- 
celled ; each cell containing 2 different kinds of bodies, one a 
membrane or capsule containing many minute granules (f. 3 ,g) ; 
the other a 1 -seeded capsule (or solitary large granule) (f. 3, h). 
— Name : pilula, a little pill; which its fructification resembles. 
1. P. globulifera L. ( creeping P., or Pepper-grass ) : E. B. 
t. 521 : Newm. p. 393. 
Margins of lakes and ponds, and in places that are partially over- 
flowed. p. 6 — 8. — Stems creeping, long, and entangled. Leaves 
setaceous, erect, 2 or 3 from one point, 4 — 5 inches long, circinate 
in vernation. Involucres at the base of the leaves, about the size of 
small peas, brown, downy on the outside. 
Ord. CXIII. EQUISETACE.E Be Cand. (Tab. XII. f. 4.) 
Fructification terminal in spikes or catkins, consisting of pel- 
tate polygonous scales, on the under side of which are from 4 — 7 
