198 SYSTEMATIC BOTANY. 



4. Papaver. Sepals 2. Petals 4. Style none. Capsule obovate, 

 opening by pores under the broad, persistent stigma. 



i. P. SOMNIFERUM (Opium Poppy). Caulescent, plant very smooth and 

 glaucous ; leaves clasping ; sepals smooth ; capsule globose ; 1-2 feet high ; 

 flowers about 3' in diameter. June- July. 



Order VII. FUMARIACE.E. 



Smooth herbs, with a watery juice. Stems brittle. Leaves 

 alternate, much divided. Flowers irregular. Sepals 2. Petals 

 4, in pairs, the outer ones spurred or saccate at base ; the inner 

 cohering at apex. Stamens 6, diadelphous. Ovary simple, be- 

 coming a i -celled, 2-valved pod, or an indehiscent, persistent, 

 globular capsule. Seeds with an aril. Embryo minute. Albu- 

 men fleshy. 



Petals slightly united, seed crested 

 Corolla 2-spurred- 



FUMARIACE^E. 



Dicentra. 



\ \ 



Petals permanently united, seed crest- 

 l^ less Adlutnia. 



( Ovary several-seeded Corydalis. 



Corolla i-spurred ( 



( Ovary i-seededFumarz'a. 



I. Dicentra. Sepals 2, minute. Petals 4, 2 outer saccate. Sta- 

 mens in 2 sets of 3 each. Capsule pod-shaped, 2-valved, many- 

 seeded. 



1. D. CUCULLARIS (Dutchman's Breeches). Scape from a bulb. Raceme 

 simple ; corolla with two long spurs. 



2. D. CANADENSIS (Squirrel-Corn"). Acaulescent ; leaves very fin sly 

 dissected, glaucous beneath ; flowers pale purple, with short, rounded spurs. 

 May-June. 



2. Adlumia. Sepals minute. Petals united into a persistent, 

 monopetalous corolla, 4-toothed at apex. Capsule pod-shaped, linear- 

 oblong, many-seeded. 



i. A. CIRRHOSA (Mountain Fringe}. Stem herbaceous ; leaves biter- 

 nately decompound ; leaflets rhomboidal ; flowers numerous, in axillary, 

 nodding, racemose clusters, pale purple. June-August. 



3. Corydalis. Sepals minute. Petals only i-spurred at base. 

 Stamens 6, in 2 sets. Capsule pod-shaped, 2-valved, many-seeded. 



i. C. GLAUCA (Pale Corydalis}. Stem erect, branching; leaves bipin- 

 nately decompound, glaucous ; flowers in erect racemes, large, rose-colored 

 and yellow. May. 



4. Fumaria. Sepals caducous. Petals unequal, i only spurred 

 at base. Fruit a i-seeded, ovoid s or globose valveless nut. 



