CRYPTOGAMIA. HEPATICiE. Riccia. 1101 
(Dwarf Blasia. Jungermannia Blasia. Three illustrative plates, 
and a very ingenious dissertation, are bestowed upon this little plant, by 
Dr. Hooker, to prove that it does not properly belong to the genus to 
which authors have hitherto referred it, but rather to Jungermannia. 
E.) On the sides of ditches and rivers in a sandy soil. At the break¬ 
ing of Medlock River Bank at Feasington Wood between Garret 
and Knotmill, about a mile from Manchester. Harrison, in Dill. 238. 
Near Halifax. Bolton. On Hounslow Heath. Hudson, (and on Shotover- 
hill, April, 1821, in full fructification, by Mr. Baxter, though rarely 
found in that state in so southern a station. Purton. E.) P. Aug.—Nov. 
RICCIA.* Capsules sessile, globular, one-celled, attached to 
the apex of the leaf, and containing from twenty to thirty 
seeds. See vol. i. pp. 352 and 371. 
R. na'tans. Leaves inversely heart-shaped: fringed. 
E. Bot. 252— Dill 78. 18. 
The edges of the leaves are not really fringed, but assume that appearance 
in consequence of their sending out fibrous roots. Web. About half an 
inch long. Fringe sometimes white. Schol. Leaves sometimes only in¬ 
versely egg-shaped, and without any notch at the end ; entire at the 
edge, bright green. Web. Very nearly allied to Targionia hypophylla . 
Huds. 
(Floating Riccia. E.) Pools about Hadley, Suffolk. Buddie, in Dill. 
537. Sawston Moor, Cambridgeshire. Mr. Relhan. A. Aug.—Oct. 
R. min'ima. Leaves smooth, deeply divided: acute. 
Dill. 78. 11— Mich. 57. 6, magnified — Schmid. 45. 3, ends of the segments 
blunt. 
Shoots hardly a line in breadth, generally forked, entire and pointed, or else 
notched at the end. In the substance and towards the base of the leaf, 
in the month of October we may observe greenish globules, changing to 
brown and then to black. Web. 
(Identified with the following in Muse. Brit. E.) 
(Least Riccia. E.) On- Blackheath, near Greenwich. Dillenius. In 
places that have been overflowed. Hudson. A. Nov.—Dec. 
R. glau'ca. Leaves smooth, channelled, two-lobed, blunt. 
Schmid 44. 1— Hedw. Theor. 29. 165 to 174—( Purt . 5— E. Bot. 2546. E.)— 
Vaill. 19. 1— FI. Dan. 898. 1— Mich. 57. 4— Dill. 78. 10— Buxh. ii. 5. 5. 
I have frequently observed black spots immersed in the substance of the 
leaves, which are what Micheli has described as capsules full of seeds, 
and which has been since clearly ascertained by Hedwig. Woodw. 
Leaves small, the under side firmly fixed to the ground, adhering at the 
base to each other, deeply divided, Pol. whitish green, thick, slippery, 
very smooth, broadish, furrowed on the upper side, frequently forked; 
segments blunt. Web. Growing in a circular form. Leaves thick, 
issuing from a centre, often cloven. Roots fine black fibres from the under 
surface of the plant which floats on the water. Ray. I have never seen 
it on the water, but in roads and wet corn-fields both in spring and 
autumn. Dill. 
* (A name conferred by Micheli, in honour of Signor Ricci, an Italian knight. E.) 
