124 
POPULAR FLORA. 
Dicentra* Dicentra (wrongly called Dielytra ). 
The species are perennials with singular and handsome flowers in racemes, blossoming in spring. 
* Wild species, in rich woods; the decompound and finely cut leaves and naked flower-stalk rising 
separately from the ground, in early spring. Delicate low plants, chiefly found N. & W T . 
1. Dutchman’s Breeches D. (Fig. 282-286.) Herbage from a sort of bulb of coarse grains; 
corolla white, tipped with cream-color, with 2 very large spurs. D. Cuculldria. 
2. Squirrel-Corn D. Underground shoots bearing little yellow tuber-like bodies, resembling grains 
of Indian Corn ; corolla white and flesh-color, fragrant like Hyacinths. D. Canadensis. 
* Garden species, leafy-stemmed, 2° or 3° high, with Peony-like leaves. 
3. Showy D. Racemes drooping, one-sided ; flowers pink-purple, V long. Cultivated. D. spectdbilis. 
Cory dal. Corydalis. 
Our two species are leafy-stemmed biennials, glaucous, with twice-pinnate leaves, and linear or 
slender pods. They grow in rocky places and flower in spring and summer. 
1. Golden C. Low and spreading; flowers yellow in simple racemes; pods hanging. C. aiirea. 
2. Pale C. Upright; flowers purplish and yellowish; racemes panicled; pods erect. C. glauca. 
10. CRUCIFEROUS OR CRESS FAMILY. Order CRUCIFERJE. 
Herbs, with alternate leaves, a sharp-tasted watery juice (never poisonous, but often 
very acrid or biting) ; perfectly distinguished by their cruciferous flowers, tetradynamous 
stamens, and by having the sort of pod called a silique or silicle (240, 
241). The flower is called cruciferous because the 4 petals, with claws 
enclosed in tne 4-sepalled calyx, have their blade spreading so as to form 
the four arms of a cross. As to the stamens, they are 6 in number (on 
the receptacle), two of them always shorter than the other four. The 
pistil makes a pod, like that of the Celandine, &c. in the Poppy family 
(Fig. 277), except that a partition stretches across between 
0 the two thread-shaped placentas, and divides the cavity into 
1 two cells. When the pod opens, the two valves fall away, 
R leaving the seeds attached to the edges of this frame. The 
1 1 whole kernel of the seed is an embryo. It is always bent or 
| folded up, in various ways. The flowers of the whole family are 
so much alike, that the genera have to 
be distinguished by their pods and seeds. 
This makes the family too difficult for 
the beginner. But so many plants of 
the family are common in cultivation, 
that we add a tabular key, leading to 
the names of the principal kinds. 
291 293 292 
289. Flower of Mustard. 290. Stamens and pistil, more magnified. 291 Pod (silique) of Toothwort, opening. 292. Pod (silicle or pmBch; 
of Shepherd’e-Puree. 293. Same, with one valve fallen off. 
289 
