Pilularia .] 
FERNS. 
67 
Matson. Near Barrington, Lancashire, Mr. W. Wilson. Near Braunston, 
Leicestershire, Rev. A. Bloxam. Hcanor, Derbyshire, and Colwick, Notts, Dr. 
Howitt. Pottery Car, Mr. S. Appleby. Near Bristol, Miss Worsley. Somerset, 
Mr. A. Southby. Norfolk, Miss Bell. At the side of the pond, in Wike Farm, 
Sion Lane, Isle worth ; near the ladder stile, Osterley Park, near Brentford, 
Middlesex ; and four miles south of Dorking (abundant), Mr. J. Bevis. Various 
parts of Surrey, Kent, Herts, and Hants, Mr. W. Pamplin. Meadows of Long 
Leet, Wiltshire, Mr, Rowden. Sussex, Mr. It. C. Watson. Near Slateford, near 
Barnstaple, Devon, Mr. J. Nash . — B ales : Near Wrexham, Mr. J. E. Bowman. 
Ire. : Lawn of the Observatory, Dunsink, Mr. Kelly. Not unfrequent in 
Ireland, Mr. Mac/cay. 
Geo. — Throughout Europe, and from New York to Pennsylvania in North 
America. 
PILULARIA. PILLWORT. 
(From pilula, a little pill ; from the shape of its seed-vessels.) 
A, frond of Pilularia globulifera magnified, showing the vernation, rhizoma, 
and roots in different states. B, cross section of the root. C, of the seed-vessel. 
D, one quarter of ditto, still further magnified, showing the spores and bags of 
granules. E, spore and abortive granules, the latter burst open. F, spore. 
G, point of ditto in germination. FI , front view of the end of ditto in germina- 
tion. I and J, germination still f urther advanced. K, cuticle of the stem. 
L, membrane which divides the root into various cells. M, hair from an invo- 
lucrum ; a, its point of attachment. The germination talcing place from a deter- 
minate point, shows that the word spore is, as relative to the Pilularia, a misnomer, 
and that, the reproductive grains are real seeds. These figures are taken from 
Mr. Valentine’ s paper mentioned in the Introduction. 
PILULARIA GLOBULIFERA. 
CREEPING PILLWORT. PEPPER-GRASS. 
(Plate lily-fig — V 1 1 jij 
Cha. — Leaves filiform. Stem creeping. Receptacles 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 
