PIPER FLORA OF THE STATE OF WASHINGTON. 299 



3. Thelypodium integrifolium (Nutt.) Endl.; Walp. Rep. 1: 172. 1842. 

 Pachypodium integrifolium Nutt.; Torr. & Gr. Fl. 1: 96. 1838. 



Type locality: "Elevated plains of the Rocky Mountains, towards the Oregon, as far 

 as Wallawallah." Collected by Nuttall. 



Range: Washington to California and Nebraska. 



Specimens examined: Yakima City, Piper, July, 1897; Coulee C!ity, iMke cfc Hull 473; 

 Satus, Elmer 1073; Squaw Creek, Cotton 87 Jf. 



Zonal distribution: Upper Sonoran. 



The "Thelypodium bracliycarjmm Torv.V' of Suksdorf's list is based on a specimen of 

 T. integrifolium. 



4. Thelypodium laciniatum (Hook.) Endl.; Walp. Rep. 1: 172. 1842. 

 Macropodium laciniatum Hook. Fl. Bor. Am. 1: 43. 1829. 



Type locality: "Common on dry rocks about Wallawallah, and at Priest's Rapid on 

 the Columbia." Collected by Douglas. 



Range: Washington to California and Nevada. 



Specimens examined: Wenache, Whited 200, 1246; North Takima, Piper; Pasco, 

 Piper 2986; Cascade Mountains, 49°, LyaU in 1860; Wallula, Leckenhy; Crab and Wilson 

 creeks, Sandberg cfc Leiberg 229; Rockland, SuJcsdorf 237 ; without locality, Vasey in 1889; 

 Rock Lake, Piper 2792; Walla Walla, Leckenby; Douglas County, Spillman; Coulee City, 

 Piper 3863; Rattlesnake Mountains, Cotton 391; Whitman County, opposite Clarkston, 

 Hunter 21; Ritzville, Sandberg & Leiberg 190. 



Zonal distribution : Upper Sonoran. 



5. Thelypodium streptanthoides Leiberg, in herb. 



Stout erect from a biennial root, often branched from the base, 0.5 to 1 meter high, 

 glabrous throughout; leaves oblong-lanceolate, irregularly sinuate-toothed or pinnatifid 

 with oblong or even linear lobes, green on both sides, 4 to 10 cm. long, all petioled; racemes 

 dense, 30 to 60 cm. long; sepals becoming 6 to 8 mm. long, deep purple at least on the upper 

 third, somewhat irregular, the lower pair often united for two-thirds of their length, con- 

 spicuously saccate at base, becoming tubulose-convolute at apex; petals narrowly linear 

 with a dilated apex, flat, double the length of the sepals; filaments much elongated, nearly 

 equal, free; pods 10 to 12 cm. long, on stout divaricate pedicels 4 to 6 mm. in length, sub- 

 terete, flexuous or curved, minutely tomentose, strongly nerved; style short or none; 

 mature seeds not seen. 



Type specimen in the U. S. National Herbarium, collected near Wilson Creek, Douglas 

 County, altitude 680 meters, no. 229, Sandberg & Leiberg in 1893. Also collected on 

 rocky cliffs at Almota, Piper 1473. and 3.563; Lake Chelan, Elmer, July, 1897; and Soap 

 Lake, McKay 2. 



This species is closely allied to T. laciniatum (Hook.) Endl., but differs in its thinner not 

 at all glaucous leaves and purple-tinged calyx. 



ERYSIMUM. 



Petals 4 to 5 mm. long; pods 1 to 2 cm. long 1. E. cheiranthoides. 



Petals 16 to 24 mm. long. 



Pods 4-angled, spreading, 5 to 12 cm. long. 



Seeds quadrangular 2. E. asperum. 



Seeds lenticular 3. E. elatum. 



Pods flattened. 



Cespitose perennial ; cotyledons incumbent 4. E. arenicola. 



Biennial, simple; cotyledons accumbent 5. E. occidentalis. 



1. Erysimum cheiranthoides L. Sp. PI. 2: 661. 1753. 

 Type locality: European. 



