222 Karl M. Wiegand and Arthur J. Eames 



3. Corydalis (Dill.) Medic. 



c. Flowers purplish green or rose color, yellow-tipped; plant usually strict. 



1. C. sempervirens 

 a. Flowers golden yellow; plant diffuse, low; leaves more finely divided, with more 

 acute segments. 2. C. aurca 



1. C. sempervirens (L.) Pers. (C. glauca of Cayuga Fl.) 



Thin acid or neutral soils on rocky outcrops, especially where fires have occurred ; 

 rare. May 15-June 20. 



Cliffs on n. side of Fall Creek just above Beebe Lake (C. O. Upton, 1878, also 

 D. !) ; still persisting, though in some seasons appearing as though extinct. 



Newf. to Alaska, southw. to Ga., Ky., Minn., and Mont., including the Coastal Plain 

 and the acid soils of N. E. 



The generic name Corydalis is included in the list of nomina conservanda of the 

 International Code. 



2. C. aurea Willd. Golden Corydalis. 



Damp or dry limy cliffs and talus; rare. May 15-June 10. 



Enfield Glen, rocks below Lucifer Falls, n. side {A. N. Prentiss, 1871, and 

 DA) ; "several times it has seemed to have become extinct, but it reappears, and 

 flowers have been collected, 1875, 1882, 1884, 1885" (£>.). In recent years there has 

 been each season a large patch. The plant also occurs occasionally as a weed on 

 garbage dumps. 



E. Que. to Alaska, southw. to Vt, Pa., Wis., and Mo., and in the Rocky Mts. to 

 Ariz. 



4. Fumaria (Tourn.) L. 

 1. F. officinalis L. Common Fumitory. 



Damp gravelly soil about gardens and yards ; rare. June. 



McKinneys, by the L. V. R. R., a few rods s. of the station, 1882 and 1886 (D.). 



Newf. to Fla. and the Gulf States. Adventive from Eu. 



56. CRUCIFERAE (Mustard Family) 



Artificial Key to the Genera 



a. Fruit not more than three times (occasionally five times in Draba) as long as wide. 

 b. Flowers white, creamy white, greenish white, or rose-purple. 

 c. Fruit flattened parallel with the broad partition. 



d. Pods oblong or elliptical, 5 mm. in diam. or less; flowers white; pubescence 

 stellate. 

 e. Seeds many in each cell, wingless ; petals cleft or entire ; pods glabrous. 



1. Draba 

 e. Seeds few in each cell, winged ; petals cleft ; pods stellate-pubescent. 



2. Berteroa 



d. Pods elliptic-orbicular, 10-30 mm. in diam. ; flowers purple ; pubescence not 

 stellate. 18. Lunaria 



c. Fruit turgid, scarcely at all flattened, ovoid or subglobose (see also 3d c). 



16. Armoracia 

 c. Fruit flattened at right angles to the narrow partition. 



d. Pods obcordate. 6. Capsella 



d. Pods ovate, oval, or orbicular. 

 e. Seeds several in each cell. 4. Thlaspi 



e. Seed 1 in each cell. 5. Lepidium 



b. Flowers bright or pale yellow. 



c. Pods flattened parallel with the partition ; plant densely stellate-pubescent. 



3. Alyssum 



