72 
FERNS. 
[Pilularia. 
in germination ( archegonium ). I and J, germination still further advanced. K, 
epidermis of the stem. L, membrane which divides the root into various cells. 
M, hair from a capsule ; a, its point of attachment. The germination taking 
place from a determinate point, show's that the word spore is, as relative to the 
Pilularia, a misnomer, and that the reproductive grains are analogous to real 
seeds. These figures are taken from Mr. Valentine’s paper mentioned in the 
Introduction. 
PILULARIA GLOBULIFERA. 
CREEPING PILLWORT. PEPPER-GRASS. 
. (Plate IV, fig. 10.) 
Cha. — Leaves filiform. Stem creeping. Capsules coriaceous, 
hairy, nearly radical. 
Syn. — Pilularia globulifera of all botanists. 
Fig. — E. B. 521. — Bolt. 40. — Flo. Dan. 223. — Hook, in Flo. Lon. 83. 
Des. — Stem very long, cylindrical, and creeping close to the 
ground, throwing off at intervals of half an inch or more several 
simple, very small, smooth, radical fibres, and from the same part 
upwards from two to six filiform, hollow, green leaves, about 2 
inches long, among which, at their base, grow one or two capsules, 
not radical, as generally said, but attached to the upper part of the 
stem, and therefore, although near the roots, not attached to them. 
The capsules are round like a peppercorn (hence the name of 
the plant), brown, and hairy. The large spores contained singly in 
the thecae, are oblong, contracted in the middle, and slightly pointed 
at one end. The small spores are contained in large numbers in the 
thecae. 
Sit. — Pools of water, edges of lakes, &c., not uncommon. 
Hab. — Scot. : Near Inverskin, Sutherland, Mr. Campbell. Marshy ground 
between tlie village of Currie and the Pentland Hills, Edinburgh, Mr. 11. Watson. 
Near Slateford, Forfarshire, Mr. W. Brand . — Eng.: Prestwich, near Northumber- 
land, Mr. R. Bowman. Colesliill Pool, Warwickshire, Rev. W. Bree. Bomere 
Pool, Salop, Rev. E. h Mliams. Near Richmond, Yorkshire, Mr. J. Ward. Beam 
Heath, near Nantwich, Cheshire, Mr. J. E. Bowman. Once plentiful at Baiting- 
ton Heath, Cheshire, and still found at Baguley Moor, in the same county, 
Mr. W. Wilson. Filby and Hopton Commons, near Yarmouth, Mr. Paget. 
Once and perhaps still in the ponds at Roehampton, Surrey; and on Ivor Heath, 
Middlesex, G. F. In a small pool between Oalcshot Hill and Claremont Park, 
Surrey, Mr. II. C. Watson. Sussex, Rev. G. E. Smith. Grosvenor and Roche, 
Cornwall, Jones's Bot. Tour. — Wai.es: Near Llanfaelov, Anglcsca; and border of 
Llyn Idwel, Caernarvonshire, Mr. W. Wilson. 
Geo. — Most parts of Europe. 
