_DIANDRIA. MONOGYNIA. “435 
celled, many-seeded; receptacle of the seed, cen- 
tral, unconnected. 
Haritvs. Leaves radical, stellately disposed, thick, 
soft, and as it were greasy to the touch, composed of an. 
almost diaphanous, distinctly cellular parenchymatous 
substance; scapes 1-flowered; flowers inverted, peny 
allied to the preceding genus. | 
Species. 1. P. elatior. 2. lutea. 3. pumila. 4. ait 
lia. 
Oxzs, The American species have the corolla 5.cleft, 
with all the segments 2-lobed or emarginate; in the P. 
lutea the corolla is campanulate and yellow, with each of 
the lobes bidentate Of 11 species enumerated in this 
genus, the United States have 4, Peru 1, and the other 6 — 
are confined to the alpine and colder morassy regions of 
Europe. The North American species grow es on a 
level with the ocean, in moist pine barrens. 
LABIATE. 
ttt Four nuked seeds. 
21. LYCOPUS. L. (Water-horehound.) , 
Calix tubular 5-cleft (or 5-toothed, acute or 
acuminate). Corolla tubular, 4-lobed, nearly 
equal; the upper segment broader and emaries 
nate. Stamina distant. Seeds 4, retuse. ae 
Flowers small, axillary, crowded, verticillate and ses- . 
sile, generally bibracteate; leaves toothed or sinuated. In + 
the Z. Virginicus the calix is 4-cleft and shorter than the 
seed; and there are the rudiments of 2 abortive stamens 
in the ZL. vulgaris. 
Spectres, 1.2L. vulgaris? 2. Virginicus. 3. pumilus. 4. ob- 
tusifolins. 5. exaliatus. 6. angusti ifolius. 7. sinuatus: Are 
not several of these varieties? (Wiih the exception of the 
LL. vulgaris this pe is thus far entirely contined io the 
United States.) 
22, CUNILA. L. (Mountain Dittany.) 
Calix cylindrical, 10-striate, 5-toothed. Com : 
~ rolla ringent, with the upper lip erect, flat and — 
emarginate. Stamens 2-sterile. The 
aoe with the — exserted earh 
