JUNE. 201 
species, found in ditches and ponds, has floating leaves, which 
are strong, stout, and on long stalks ; those under the water 
are longer, and of a membranous substance. The whole 
plant is of a reddish olive colour, which, perhaps, best dis- 
tinguishes it from other species. 
PoraMoGETON NATANS. Sharp-pownted, broad-leaved Pond- 
weed. The lower leaves, or those under water, are narrow ; 
the upper, or floating, have long footstalks, and many 
nerves, their shape differmg very much, but they are gene- 
rally broad and not pointed. The upper side of the leaf 
never seems to become wet, for if held under the water, or 
the rain be ever so heavy, still the surface remains perfectly 
dry. It is found in stagnant water, and slow streams. 
PENTANDRIA. MONOGYNIA. 
COROLLIFLORZ. BORAGINACE. 
ECHIUM. (Vrirer’s BuGtLoss.) 
Generic Character. Calya divided into five. Corolla of one 
petal, irregularly divided, its throat swollen. Stigma deeply 
cleft. 
EcHIuM VULGARE. Common Viper’s Bugloss. This plant 
