PIPER FLORA OF THE STATE OF WASHINGTON. * 285 



Corydalis macrophylla Nutt.; Torr. & Gr. Fl. 1 : 69. 1838. 



Type locality: "In dark shady woods of North-West America; plentiful near the 

 confluence of the Columbia with the sea." Collected by Scouler and by Douglas. 



Range: Washington and Oregon in the coast region. 



Specimens examined: Near Montesano, Heller 3871; Little Hoquiam River, Lamb 

 1063; Succotash Valley, Piper, August, 1895; July, 1895; Skokomish Valley, Kincaid, 

 June 1892; upper Valley Nisqually, Allen 118; Steilacoom; Ilwaco, Piper 4958. 



Zonal distribution: Canadian. 



2. Capnoides aureum (Willd.) Kuntze, Rev. Gen. PI. 1: 14. 1891. 



Corydalis aurea Willd. Enum. 740. 1809. 



Type locality: "Habitat in Canada." 



Range: British Columbia to Hudson Bay and New England, southward to Arizona and 

 Texas. 



Specimens examined: Rock Island, Sandberg & Leiberg 432; Spokane, Piper, May, 

 1898; Marshall Junction, Piper, July, 1896; Wawawai, Elmer, June, 1897. 



Zonal distribution: Arid Transition and Upper Sonoran. 



BRASSICACEAE. Mustard Family. 



Pods indehiscent. 



Flowers red; pods elongate, cylindric, somewhat con- 

 stricted 28. Rapiianus (p. 307) . 



Flowers not red; pods orbicular or globose. 



Pods globose, reticulated; flowers yellow 25. Neslia (p. 306). 



Pods flattened, orbicular; flowers white. 



Fruit wingless; pubescence branched 26. Athysanus (p. 306). 



Fruit winged; pubescence simple 27. Tiiysanocarpus (p. 306). 



Pods dehiscent, 2-valved, either elongate (siliques) or short 

 (silicles). 

 Pods elongate, therefore siliques. 



Siliques compressed parallel to the broad partition. 

 Valves nerveless; leaves all petioled. 



Flowers red; stem 2 or 3-leaved near the 



summit 4. Dentaria (p. 288) . 



Flowers white; stem leafy below or 



throughout 5. Cardamine (p. 289) . 



Valves 1-nerved; cauline leaves sessile. 



Siliques lanceolate, the valves reticulate. . 6. Parrya (p. 291) . 

 Siliques linear. 



Petals flat; anthers short, subcordate. 7. Arabis (p. 291). 

 Petals twisted; anthers long, sagit- 

 tate 8. Streptantiius (p. 296) . 



Siliques terete, not at all compressed. 

 Pods 4 cm. long or more. 



Flowers white or red; stigmas entire; pods 



erect ". 11. Tiielypodium (p. 298). 



Flowers yellow; stigmas 2-lobed; pods 



spreading -. 12. Erysimum (p. 299) . 



Pods less than 4 cm. long. 



Herbage canescent; flowers white; low al- 

 pine perennials 13. Smelowskia (p. 300) . 



Herbage not canescent; flowers yellow or 

 white. 



