14 FUMARIACE.E. (FUMITORY FAMILY.) 



1. DICENTRA, Borkh. 



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 con- 

 tains the anthers and stigma. Middle anther in each set 2-celled, lateral ones 

 1-celled. Stigma 2-lobed. Pod 1 -celled. —Glabrous perennials with the 

 fleshy root surmounted by a bulb-like cluster of fleshy grains and ternately 

 or pinnately compound leaves. 



1. D. UDiflora, Kellogg. The 3 to 7 divisions of the leaves pinnatifid 

 into a few linear-oblong or spatulate lobes : scape 2 to 3 bracted, 1 -flowered : 

 flowers flesh-colored, ^ inch long, the divergent or reflexed tips of the outer 

 petals equalling or exceeding the erect gibbous-saccate base ; inner ones not 

 crested, the blade broadly hastate : pod abruptly beaked with the short style. 

 — Alpine. Wasatch and Teton Mountains, and westward in the Sierra 

 Nevada. 



2. CORYDALIS, DC. 



Corolla one-spurred at the base on the upper side. Otherwise as in Dicentra. 

 * Corolla golden-yellow ; spur shorter than the rest of the flower. 



1. C. aurea, Willd. Stems low or decumbent: racemes simple: the 

 slightly decurved spur not half the length of the rest of the flower : tips of the 

 outer petals blunt, crestless and naked on the back: pods usually pendent: 

 seeds smooth and even, turgid, margintess, partly covered by the scale-shaped 

 aril. — From Colorado northward and eastward. 



Var. OCCldentalis, Gray. Spur longer : pods erect : seeds lenticular with 

 acute margins. — More common in our range than the type. Colorado to 

 Montana, and eastward to Missouri and Texas. 



Var. micrantha, Engelm. Flowers small, nearly spui'less, on short pedi- 

 cels: pods ascending. — From the Western Mississippi States to the Uinta 

 Mountains. 



2. C. CUrvisiliqua, Engelm. Differs from the last in having longer 

 4-angular pods ascending on very short pedicels : the acute-margined seeds muri- 

 cate. — C. aurea, var. curvisiliqua, Gray. Common in the mountains of 

 Colorado and southeastward. 



* * Corolla white or cream-color ; spur longer than the rest of the flower 



3. C. Brandegei, Watson. Tall and stout (5 feet high) : leaves twice 

 or thrice pinnately divided ; the lanceolate leaflets % to 1 inch long, acute or 

 acuminate : hood not crested, the margins folded back and not projecting 

 beyond the obtuse summit: pod oblong-obovate, obtuse, reflexed. — Mountains of 

 S. Colorado and in the Wasatch. Formerly referred to C. Caseana, which 

 nas a more westerly range. 



4. C. Cusickii, Watson. Leaves bipinnately divided ; the oblong-oval leaf- 

 .ets acute at each end, half -inch long : the broad margins of the hood produced 

 beyond its acute apex and folded bock over the narrow and somewhat crisped 

 or erose crest : pod acute. — Extending from Oregon into the Bitter Root 

 Mountains. 



