—— He tas | 79. 
CRUCIFERAL, 
WALLFLOWER. 
A herb, stem inclined to be eens at its base. 
Leaves; alternate, sessile, exstipulate, simple, lanceolate, 
margin entire, apex acute. 
Inflorescence : a raceme. 
Flowers : regular P hypogynous 
Culyz (sepals): 2+ 2, free, inferior ; 
the lateral sepals bilge out owing to 
the nectaries on the short stamens. 
Corolla (petals): 4, free, hypogynous, 
cruciform. 
Andrecvum (stamens): 2+ 27, free, 
hypogynous; four long, two short 
stamens. Nectaries at base of short 
stamens. 
Gynecium (carpels) : 2, joined, superior, stigma bifid; style 
much reduced; placentation parietal. 
Fruit, a siliqua. (See Fig. 72.) 
The number of floral leaves in each whorl may be ie as two. 
This is clearly 
seen in the calyx. 
In the corolla the 
whorl consists of 
four leaves (pro- 
bably produced 
by the branching 
of two) in the 
diagonal _ plane 
(Fig. 103). The 
: stamens are in 
Fic. 104.—LonGrrupINAL SECTION two whorls, the 
oF WALLFLOWER outermost consist- 
ing of the two short stamens, and the innermost of the four 
long stamens, probably derived from a primitive form which 
had but two. ‘The gynecium consists of two carpellary leaves. 
Type. 

Fre: 103: —FLoRAL DiA- 
GRAM OF WALLFLOWER. 

