206 PAPAVERACEAE ( POPPY FAMILY) 



white, and without any setulose hispidity. Sepals usually 3 and petals 6. 

 Stamens many. Capsule 1-celled, with 4-6 nerviform placentae. Seed 

 pitted. 



1. Argemone intermedia Sweet, Hort. Brit. Ed. 2. 585. 1830. Stout, 

 very glaucous, moderately prickly with stramineous spines, otherwise smooth: 

 leaves repand-toothed to sinuate-pinnatifid : petals white or tinged with rose: 

 sepals sparsely spiny, the horns unarmed and not even hispid. A. platyceras 

 in part. Southern Wyoming to New Mexico. 



, 4. DICENTRA Bernh. 



Glabrous perennials with the fleshy root surmounted by a bulb-like cluster 

 of fleshy grains and ternately or pinnately compound leaves. Sepals 2, small 

 and scale-like. Petals 4, in two sets; the outer pair larger, saccate at base, 

 the tips spreading; the inner much narrower, spoon-shaped, the hollowed 

 tips lightly united at the apex, thus forming a cavity which contains the 

 anthers and stigma. Middle anther in each set 2-celle.d, lateral ones 1-celled. 

 Stigma 2-lobed. Pod 1-celled. (Bicuculla Adans.) 



1. Dicentra uniflora Kellogg, Proc. Calif. Acad. Sci. 4: 141. 1870. The 

 3 to 7 divisions of the leaves pinnatifid into a few linear-oblong or spatulate 

 lobes: scape 2-3-bracted, 1-flowered: flowers flesh-colored, 10-12 mm. long, 

 the divergent or reflexed tips of the outer petals equaling or exceeding the 

 erect gibbous-saccate base; inner ones not crested, the blade broadly hastate: 

 capsule abruptly beaked with the short style. Alpine; mountains of Utah 

 and northwest Wyoming to those of Washington. 



5. CORYDALIS Medik. 



Annual or perennial herbs with watery juice, compound or dissected leaves, 

 and racemose flowers. Sepals 2, small. Corolla irregular; petals 4, one of the 

 outer pair spurred at the base. Stamens 6, in 2 sets, opposite the outer petals. 

 Placentae 2. Capsule 2-valved, linear or oblong. (Capnoides Adans.) 



Flowers golden-yellow. 



Capsule incurved-ascending; seeds acute-margined. 



Capsule terete or torulose ... . . . . . . 1. C. montana. 



Capsule thick and somewhat 4-angled . . . . . . 2. C. curvisiliqua. 



Capsule spreading or pendulous; seeds obtuse-margined . . 3. C. aurea. 



Flowers white or cream-color ^ 4. C. Brandegei. 



1. Corydalis montana Engelm. in Gray, Man. Ed. 5. 62. 1867. Light 

 green and glabrous: stems spreading, branched, 1-3 cm. long: leaves pin- 

 nately dissected; the divisions oblong or nearly linear: flowers bright yellow, 

 12-16 mm. long; the spur nearly as long as the body: capsule incurved- 

 ascending or somewhat spreading, 15-25 mm. long: seeds lenticular, black, 

 shining, sharp-margined, and obscurely reticulated. Corydalis aurea occiden- 

 talis. In the central Rocky Mountain region, eastward to the plains. 



2. Corydalis curvisiliqua Engelm. 1. c. Near the last but usually taller, 

 stouter, and more erect: flowers nearly sessile in a spicate raceme: capsule 

 oblong-linear, more or less 4-angled, incur ved-ascending: seeds distinctly 

 finely reticulated. In the eastern part of our range. 



3. Corydalis aurea Willd. Enum. 740. 1809. Green and glabrous, usually 

 low and decumbent; the stems branched: raceme many-flowered: tips of the 

 outer petals blunt, carinate but not crested; the spur half as long as the body 

 or often more: capsule usually pendent, more or less constricted and torulose: 

 seeds shining, obtuse-margined, scarcely reticulated. From Colorado north- 

 ward and eastward. 



4. Corydalis Brandegei Wats. Bot. Calif. 2: 430. 1880. Glabrous and 

 somewhat glaucous; stems stout, mostly erect, 3-10 dm. high: leaves twice 

 or thrice pinnately divided; the leaflets 2-3 cm. long, from lanceolate to 



