306 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



3. Thlaspi glauciun A. Nelson, Bull. Torr. Club 26: 275. 1898. 

 Thlaspi ali>e)<tre glaucum A. Nelson, First Rep. Fl. Wyo. 84. 1896. 

 Type locality: La Plata Mines, W^'oming. 

 Range: Washington, Wyoming. 

 Specimens examined: Blue Mountains, Piper 2407. 

 Zonal distribution: Canadian. 



PHYSARIA. 



1. Physaria geyeri (Hook.) A. Gray, Gen. III. 1: 162. 1848. 



Vesicario (jeyrri Hook. Lond. Journ. Bot. 6: 70. ]i. 5. 1847. 



Type locauty: "Sunny, sandy declivities on elevated volcanic places, Upper Spokan 

 River." Collected by Gej'cr. 



Range: In the vicinity of Spokane, Washington. 



Specimens examined: Spokane Valley, Lyall in 1861; upper Spokane River, Gej/er 476; 

 Spokane, Henderson 2384; Piper 2293; Marshall Junction, Piper 1843; Hangman Creek 

 Sandberg tk Leiberg 17; Clarks Springs, Kreager 117. 



Zonal distribution: Arid Transition. 



Hooker n at fii-st included this species in his Veidcaria didymocarpa, and this is perhaps the 

 bajiis for the inclusion of Physaria didymocarpa (Hook.) Gray in Suksdorf's list. 



NESLIA. 



1. Neslia paniculata (L.) Desv. Journ. Bot. 3: 162. 1814. 

 Myagrum jHiniculatum L. Sp. PI. 2: 641. 1753. 

 Type locality: "Habitat in Europa, juxta agros." 

 Specimens examined: Frontier, Kreager 4(57. 



ATHYSANUS. 



1. Athysanns pusillus (IIcH)k.) (ireeiie. Bull. Cal. Acad. 1: 72. 1885. 



Thysanocarpns pusiUus Hook. Ic. PI. pi. Jt2. 1837. 



Thysanocarpus ohlongifdius Nutt.; Torr. & Gr. Fl. 1: 118. 1838. 



Type locality: Monterey, California. Collected by Douglas. 



Range: Briti.sh Columbia to Idaho and California. 



Specimens examined: Tacoma, Flett 885; Rock Creek, Sandberg cfc Leiberg 96; without 

 ItK-ality, Vasey in 1889; Pullman, Elmer 124; Piper 1481; Hull, May, 1892. 



Zonal distribution: Transition. 



THYSANOCARPUS. 



1. Thysanocarpus curvipes Hook. Fl. Bor. Am. 1: 69. 1830. 



Thysanocarpus trichocarpus Rydberg, Bull. Torr. Club 30: 253. 1903. 



Type locality: "On moist ground, near the Great Falls of the Columbia." Collected 

 by Douglas. 



Range: Washington and Idaho to California and Arizona. 



Specimens examined: West Klickitat County, Suhsdorf, April 30, 1886; Rock Lake, 

 Sandberg <& Leiberg lis ; W^awawai, Late 478; Piper 1480 in part, April, 1897; Waitsburg, 

 Horner 76 in part; without locality, Vasey 187. 



Zonal distribution: Upper Sonoran and Arid Transition. 



la. Thysanocarpus curvipes madocarpus subsp. nov. 



Differs from the species in having its pods glabrous instead of puberulent. 



From field observations this seems worthy of subspecific rank. While both forms may 

 occur close together, yet so far as my observations go a particular colony of plants is of one 

 form or the other; the two do not occur mixed. 



a Fl. Bot. Am. 1 : 49. 1830. 



