136 American Midland Naturalist Monograph No. 2 



cm. long; seeds puncticulate, sharp-margined; moist woods, local. Apr.- 



May. [C. aurea of auth., not Willd.} Pale Corydalis 



C. flctvtda (Raf.) DC. 



2. Crest of the petals entire; capsules erect or ascending, the pedicels 2-3 



mm. long; seeds smooth, round-margined; woods, local. May-July. 



Small-flowered Corydalis C. micrantha (Engelm.) Gray 



1. Flowers 12-16 mm. long; outer petals not crested; capsules erect or as- 

 cending. 



3. Flowers orange-yellow; spur one-third to one-half the length of the corolla; 



capsules 1-1.5 cm. long, the pedicels 2-3 mm. long; seeds smooth; rocky 



woods in the n. third of 111. Apr.-May. Golden Corydalis 



C. montana Engelm. 



3. Flowers rose, tipped with yellow; spur short and rounded, less than I/4 

 the l<ength of the corolla; capsules 3-4 cm. long; pedicels 6-10 mm. 

 long; seeds slightly puncticulate; rocky woods, extending southw. to 

 Morgan Co. May-Aug. Pink Corydalis C sempervirens (L.) Pers. 



3. FuMARiA L. — Fumitory 

 F. officinalis L. Waste places, occasional; adv. from Eur. May-Aug. 



71. Cruciferae B. Juss. — Mustard Family 



1. Petals yellow, yellowish, or cream (sometimes fading whitish). 

 2. Pods several times longer than wide. 



3. Pubescence of smiple hairs or plants glabrous. 

 4. Pods with a distmct flattened or conical beak. 



5. Pods flattened. 2.5-4 cm. long, 2 mm. wide; petals twice as long as the 

 sepals; leaves mostly basal, oblanceolate, smuate-dentate or pinnatifid.... 

 4. Diplolaxis 



5. Pods terete, or slightly angular 3. Drassica 



4. Pods merely tipped with the style or stigma. 



6. Leaves lobed to pinnatifid; petals yellow. 



7. Pods 4-angled; seeds in I row in each locule; valves of the pod 1 -nerved 



5. Barbarea 



7. Pods terete or nearly so. 



8. Valves of the pod with 1-3 nerves; seeds in 1 row in each locule.... 



7. Sis\)mhriiim 



8. Valves nerveless; seeds in 2 rows in each locule 6. Rorippa 



6. Leaves entire, cordate-clasping the stem, glabrous, glaucous; petals cream, 



8-10 mm. long; pods linear, ascending, 8-10 cm. long 9. Connngia 



3. Pubescence (at least of the leaves) of branched hairs. 



9. Leaves entire to dentate; pubescence of appressed, 2-branched hairs which 

 appear as if attached by the middle; petals more than 3 mm. long; pods 



4-angled 10. Erysimum 



9. Leaves bipinnatifid or Iripinnatifid, usually finely dissected, sparsely pubescent 

 with short, branched hairs; petals 2-3 mm. long; pods terete or nearly so 



I 1 . Desciirainia 



2. Pods short, not more than three times as long as wide. 



10. Pods flattened parallel to the broad septum, orbicular, 3 mm. broad, shallowly 

 notched at the apex; leaves linear-spafulate, entire, densely stellate-canescent 



21. Al'pssiitn 



10. Pods turgid, not compressed, or only slightly so, ellipsoid, obovoid, or globose. 



I 1 . Leaves plnnately parted or lobed; pods ellipsoid 6. Rorippa 



I 1 . Leaves entire or toothed, and except in Lesquerella, sagittate-clasping the 

 stem. 



