142 NATURAL HISTORY OF PLANTS. 



ranks opposite outer petals, united above the middle or from the base ; 

 middle stamen of each row often calcarate at base, and bearing a 

 2-celled, extrorse anther; lateral anthers 1 -celled (or rather 2 

 cells of each anther opposite to inner petals very discrete and adnate 

 to adjacent 2-celled anthers). Germen 1 -celled; placentas 2, filiform, 

 oo-ovulate ; style stigmatiferous ; apex 2-4-lobed. Capsule varying 

 in shape ; subdehiscent by 2 valves, usually exposing the persistent 

 placentas and style. Seeds bare or crested. — Herbs, erect or climbing; 

 leaves multisect ; flower in terminal or leaf-opposed simple or cymi- 

 ferous racemes {North America, Temperate Asia). See p. 122. 



18. Adlumia Eafin. — Flowers of Dicentra ; 2 outer petals saccate 

 and coalesced with interior at the compressed base. Other parts of 

 Dicentra. — A herb, climbing by tendrils ; leaves multisect ; flowers 

 in terminal or leaf-opposed racemes {North America.) See p. 123. 



19. Corydalis DC. — Flowers irregular ; outer petals dissimilar; 

 one gibbous saccate or spurred at base. Stamens of Dicentra. 

 Germen of Dicentra ; placentas 2, nerviform, 1- oo-ovuled. Capsule 

 linear, ovate, or inflated ; valves exposing placentas, more or less, 

 more rarely subcarneous and scarcely dehiscing. Seeds naked or 

 more frequently arillate-crested. — Herbs, sometimes erect with tube- 

 rous rhizome, or csespitose, sometimes diffuse or climbing by ten- 

 drils ; leaves radical multisect; flowers usually in simple terminal or 

 leaf-opposed racemes {Mediterranean region, South Europe, South 

 Africa, Central or North East Asia). See p. 123. 



20? Sarcocapnos DC. — Flowers of Corydalis; one of the outer 

 petals spurred or gibbous at base {Aplectrocapnos). Ovules 1 or 2 on 

 each of 2 placentas [Corydalis). Fruit short, compressed, striate, 

 becoming dry and indehiscent, 1-2-seeded. Herbs, low csespitose 

 glaucous ; leaves dissected ; segments somewhat broad and thick ; 

 flowers in short terminal racemes {West Mediterranean region). 

 See p. 125. 



21. Fumaria T. — Flowers almost of Corydalis ; one of outer petals 

 gibbous or spurred at base. Germen short ; style filiform ; apex 



