The “BRI TIS’H 'H ER B A°L, 
489 
It is common in fhallow waters, flowering in 
July. 
C. Baubine calls it Potamogiton foliis crifpis five 
Laétuca ranarum., 
Befide thefe, there are no lefs than fifteen other 
Englith fpecies of pondweed 5 the general form of 
which being the fame, we fhall avoid the repeti- 
tion of fo many defcriptions, and give their names 
and characters. 
1. Long, pellucid-leaved Great Pondweed, Po- 
tamogiton foliis anguftis [plendentibus. Diftin- 
guifhed by the length of the leaf. 
2. Grafly Pondweed, Potamogiton folio angufto 
pellucido fere gramineo. Smaller than the 
former, and the flowers larger. 
3. Heart leaved Pondweed, Potamogiton folio cor- 
dato. Deeply divided at the bafe of the leaf, 
4. Frog’s Lettuce, Potamogiton medium lucens, 
whofe leaves grow in pairs, and are obtufe. 
5. Flat-ftalked, grafly Pondweed, Potamogiton 
caule compreffo folio graminis canini. The 
leaves have no footftalks. . 
6. Broader-leaved, flat-ftalked Pondweed, Pota- 
mogiton gramincum latifolium. The leaves 
have obfcure footftalks, 
7. Clufter-leaved, grafly Pondweed, Potamogi- 
ton gramineum latius foliis et ramis ftipatis. 
Ge 
Nee U: 
OWR™ Ai C SH: 
co 
- Serrated Grafly Pondweed, Potamogiton foliis 
kramineis ferratis latioribus caulis. 
» Harfh-leayed Grafly Pondweed, Potamogiten 
foliis gramineis rigidis, A large plant. 
10. Great-headed Pondweed, Potamogiton mari- 
timum grand nfaclis capitulis. The leaves are 
very narrow. 
\o 
11, Fennel-leaved Pondweed, Potamogiton milli- 
folium. The leaves are very narrow, and 
finely divided. 
12 
- Dwarf Grafly Pondweed, Potamogiton pufil- 
lum gramineo folio caule tereti. The'round- 
nefs of the ftalk diftinguithes this, 
13. Broad, thin-leaved Pondweed, Potamogiton 
foliis tenuibus pellucidis. The leaves have 
long, brown footftalks. 
14. Feather-leaved Pondweed, Potcmogiton foliis 
peanatis. The flowers grow in long, flen- 
der interrupted fpikes. 
15. Dwarf feathered Pondweed, Potamogiton pen- 
natum minus. Smaller, and more branched 
than the former. 
From this detail of their differences, the ftu- 
dent will much more readily comprehend the fe- 
veral fpecies than if they had been feparated un. 
der fo many diftin& heads, and encumbered with 
Tepetitions ; for the flowers are of the fame form 
and colour in all, and the general manner of 
growth in nothing different. 
See xc vith 
AMBIOREMT "P Bxinbun 
HE flowers aré of two kind’, hermaphrodite and female, on the fame plant, 
T dite flower confifts of a cup, formed of five membranaceous leaves, with filmy edges, 
The hermaphro- 
and en- 
clofing afterwards a fingle feed. The female flower confifts of a cup, formed only of two leaves 5 - 
which are of an oval form, large, and comprefled. Thefe afterwards ferve to defend alfo a fingle 
feed. 
Linnzus places this among the polygamia monecia; the feeds being ripened in two ways on the 
fame plant, from hermaphrodite and female flowers. 
Spear-pointed Orach. 
Atriplex vulgaris folio haftato. 
The root is fibrous. 
The ftalk is upright, two feet high, branched, 
and of a pale green. __ 
The leaves are oblong, broad, and of a pale 
green, very broad toward the bafe, and termi- 
nated by a large triangular point, like the head of 
a fpear. ‘ 
The flowers are fmall, and whitith. 
It is common in cultivated ground, and flowers 
in June. 
C. Bauhine calls it Atriplex fylveftris altera, 
Others, Atriplex folio deltoide. 
‘Befide this, there are no lefs than thirteen other 
fpecies of wild orach, common on our dunghills ; 
and fome others-of the d/ite kind, which are alfo 
called by the name orach, the diftinction nor 
having been obvious to the earlier writers. We 
fhall explain that under the next genus ; and fhall 
here, as in the preceding article, enumerate the 
fpecies, with their effential and diftindive parts 5 
the general afpect being incommon. This, which 
we begin in recounting thelefs confpicuous and lefs 
N° XLix, 
‘ 
ufeful plants, muft be continued when we give the 
reader an idea of the grafles, mofles, and mufh- 
rooms ; articles which have fingly furnifhed the 
fubject of volumes in folio; but which we fhall 
comprife in a fufficient view in the few remain- 
ing numbers of this work. 
The fpecies of orach here to be enumerated are 
thefe : 
1. Narrow-leaved Orach, Atriplex angufto oblongo 
folio, The flowers are very numerous. 
“2. Narrow-leaved Sea-Orach, Atriplex maritima 
anguftifolia dentata, The leaves are indented 
and bluifh, 
3. Jagged, narrow-leaved Orach, triplex an. 
guftifolia laciniata, ‘The’ leaves deeply cut, 
and of a pale green. 
4. Perennial Sea-Orach, Atriplex maritima peren- 
nis folio deltcide. The leaves of a bluifh 
green. - 
5. Tall Sea-Orach, Atriplex maritima procerior. . 
The leaves are deeply cut, greyifh, and 
hoary. 
6. Auriculated Sea-Orach, A¢riplex maritina ad 
Bajfin auriculata. This is a procumbent 
plant. 
61 7. Jagged 
