PIPER FLORA OF THE STATE OF WASHINGTON. 285 



Vorydalis macro phijlla Nutt.; Tori-. &Gv. Fl. 1: 69. 1S38. 



Type locality: "In dark shady \vood.s of North-West Anierica; plontil'iil nc;ir thi' 

 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 Iloquiani River, Lamb 

 1003; Succotash Valley, Piper, August, 1895; July, 1895; Skokoniish Valley, Kincaid, 

 June 1892; upper Valley Nisqually, x4Z/en. 118; Steilacoom; Ilwaco, F(/)er 4958. 



Zonal distribution: Canadian. 



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



Cori/dalis aurea Willd. Eiuun. 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 cfc Leiberg 432; Spokane, Piper, May, 

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



Zonal distribution: Arid Transition and Upper Sonoran. 



BRASSICACEAE. Mi stakd 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. Atiiysanus (p. 306) . 



Fruit winged; pubescence simple 27. Thysaxocarpus (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. Caruamink (p. 289) . 



Valves 1-nervcd; 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. 29()) . 



Siliques terete, not at all compressed. 

 Pods 4 cm. long or more. 



Flowers white or red; stigmas entire; pods 



erect 11. Tiielypodidm ( 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. 



