places. On Hounflow heath towards Hampton. 
VI; --IX. 
isoETEs. Quillwort. Fruclifications diclinous, 
within the bafe of the leaf, capfule bilocular. 
1 . ' Ifoetes lacujfris. L. 156 3. Subulana vulgaris ereBa 
folio rigidffimo. R. 306. — b. S, repms folio minus rigi* 
do. R. 306* — QkS.fragilis., folio longiore et tenuiore. R. 
307. (^illwort. In a lake called Phynon Vrech 
near the top of Snowdon, and in Liyn y Cwn on 
Glyder. 
Marchantia. Liverwort. Calyx of the male 
fruflification peltate, covered on the low'er furface 
with monopetalous corollae, calyx of the female fef- 
file campanulate, polyfpermous. 
(. Marchantia polymorpha. L, Lichen pet r ecus 
LtiifoHus^ fve Hepatica fontana. B. 362. R. 115. — b. 
L.petrceus fteilaius.^. 362. R. 1 1 5. Star Liverwort. 
Stone Liverwort. Common calyx decemfid In 
moift fhady places. III. IV. 
2. Marchantia cruciata. L. 1604. Lichen pileatus 
parvus^ capitulo crucis injiar fe expandmte- R. 115. £* 
petraus mufeofus racemofus, B. 362. Crofs Liverwort. 
Common calyx quadripartite, fegments tubulofe. 
In Ihady places. VI. 
3. Marchantia hemifphcerica. L. 1604. Lichen pilea^ 
tus parvus^ foliis crenatis. R. 114- Hemifpheric Liver- 
wort. Common calyx quinquefid, hemifpheric, no 
perichoetium. In fliady places. Near Petersheid 
in Hamplhire. IV. V. 
4. Marchantia conica,L.\6o.e^. Lichen petreeus pilea^ 
ins. Park, i R. 1 L. petraus cauliculo pileo^ 
lumfujlinente, B. 362. Conic Liverv/ort Common 
calyx quinquelocular, fubovate. By brooks in 
' fhady places. IV. 
JuNGERMANNiA. Male fruclification peduncu- 
late, naked, quadrivalve, female feffile, naked, 
> with roundilh feeds. 
Tp 
I. Leaves 
