NAT. ORDER. 
Onagrarim. 
CENOTHERA DRUMMONDII. EVENIISG-PRIMROSB. 
Class Vin. OcTANDRiA. Order I. Monogynia. 
Gm. Char. Calyx of four sepals. Sepals connected into a long 
tetragonal, or eight-ribbed tube. Segments, deciduous. Petals, 
four. Stamens, eight, erect or declinate. Polen, triangular, 
clammy. Stigma, four-cleft^ or capitate. 
Spe. Char. Stem, simple, erect. Leaves, oblong-lanceolate, toothed. 
Capsule, curved, cylindrical, four-cornered, four-celled, four- 
valved. Seeds, angular, naked. 
This plant has a biennial fusiform fibrous root, yellowish on the 
outside, and white within ; from this, the first year arise many obtuse 
leaves, which spread flat on the ground ; and from among which the 
second year, the stems come out, rising three or four feet high, 
upright, of a pale green color, about the size of the finger, not hollow 
but pithy, angular, slightly pubscent and ragged, tinged with purple, 
especially towards the bottom, branched alternately almost from the 
ground ; the root-leaves run down into a three-sided petiole, which is 
about one inch in length ; the stem-leaves are sessile, of a bright 
lightish green, pubscent on both sides, waved a little about the edge, 
and having a few small teeth near the base ; they are from five to 
seven inches in length, and about two inches in breadth, having a 
considerable midrib running the whole length, very wide and tinged 
with purple towards the base; at the back it is very prominent, with 
white nerves springing from it, and curved towards the point ; the 
jlowers are produced all along the stalks on axillary branches, and in 
a terminating spike ; the leaves on the former are similar to the 
stem-leaves, but much smaller, being not more than two inches long, 
Vol. iv.— 69, 
