124 FUMARIACEiE. 



ent filiform intervalvular placental;. Seeds globular-reni- 

 form, with a smooth and shining crustaceous testa, partly 

 covered by a concave or shell-shaped hilar crest. Embryo 

 minute, at the smaller curved extremity of the fleshy albu- 

 men, next the hilum : cotyledons as long as the radicle, 

 foliaceous and lanceolate in germination. 



Herbs with slender or simple roots (no tuberous caudex), 

 often biennial or annual ; the stem more or less branching, 

 and with ternately or pinnately compound or dissected leaves. 

 Racemes terminal, or becoming opposite the leaves, bracte- 

 ate, often yellow or purple. 



Etymology. An ancient name for the "crested lark," and for some 

 plant of the Fumitory family, which probably took the name from the spur 

 of the flower, somewhat like that of the Larkspur. 



Geographical Distribution, &o. Natives of the northern temperate 

 zone, much the greater part Siberian. The two species in the United 

 States, with one on the Pacific coast, belong to the genus as restricted by 

 Bernhardi, whose view it is therefore most convenient to adopt. 



PLATE 52. Corydalis aurea, Willd. ; — summit of a stem in flower 

 and fruit; natural size. (Botanic Garden, Cambridge ; from Ver- 

 mont, Oakcs.) 



1. A flower (with a bractlet), enlarged. 



2. Diagram of the disposition of its parts. 



3. A dissected flower, more enlarged ; with 4, its pair of inner petals. 



5. Pistil, more enlarged, its base cut away, showing a section of the ovary. 



6. Vertical section of the lower part, showing the ovules. 



7. An ovule, more magnified (the incipient crest forming from the raphe). 



8. Enlarged replum of a pod, and seeds; the valves fallen away. 



9. A seed, with its crest, more magnified. 



10. Vertical section of the same ; showing the minute embryo in place. 



11. Embryo, detached and more magnified- 



