306 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
8. Thlaspi glaucum A. Nelson, Bull. Torr. Club 25: 275. 1898. 
Thlaspi alpestre glaucum A. Nelson, First Rep. Fl. Wyo. 84. 1896. 
Type Locatity: La Plata Mines, Wyoming. 
Rance: Washington, Wyoming. 
SPECIMENS EXAMINED: Blue Mountains, Piper 2407. 
ZONAL DISTRIBUTION: Canadian. 
PHYSARIA. 
1. Physaria geyeri (Hook.) A. Gray, Gen. Ill. 1: 162. 1848. 
Vesicaria geyeri Hook. Lond. Journ. Bot. 6: 70. pl. 5. 1847. 
Type Locauity: “Sunny, sandy declivities on elevated volcanic places, Upper Spokan 
River.”” Collected by Geyer. 
Rance: In the vicinity of Spokane, Washington. 
SPECIMENS EXAMINED: Spokane Valley, Lyall in 1861; upper Spokane River, Geyer 476; 
Spokane, Henderson 2384; Piper 2293; Marshall Junction, Piper 1843; Hangman Creek 
Sandberg & Leiberg 17; Clarks Springs, Kreager 117. 
ZONAL DISTRIBUTION: Arid Transition. 
Hooker @ at first included this species in his Vesicaria didymocar pa, and this is perhaps the 
basis for the inclusion of Physaria didymocarpa (Hook.) Gray in Suksdorf’s list. 
NESLIA. 
1. Neslia paniculata (L.) Desv. Journ. Bot. 3: 162. 1814. 
Myagrum paniculatum L. Sp. Pl. 2: 641. 1753. 
Type Locauiry: “Habitat in Europa, juxta agros.’”’ 
SPECIMENS EXAMINED: Frontier, Kreager 467. 
ATHYSANUS. 
1. Athysanus pusillus (Hook.) Greene, Bull. Cal. Acad. 1: 72. 1885. 
Thysanocarpus pusillus Hook. Ic. Pl. pl. 42. 1837. 
Thysanocarpus oblongifolius Nutt.; Torr. & Gr. Fl. 1: 118. 1888. 
Type Locatity: Monterey, California. Collected by Douglas. 
Rance: British Columbia to Idaho and California. 
SPECIMENS EXAMINED: Tacoma, Flett 885; Rock Creek, Sandberg & Leiberg 96; without 
locality, 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 80: 253. 1903. 
Type Locauity: ‘On moist ground, near the Great Falls of the Columbia.’’ Collected 
by Douglas. 
Rance: Washington and Idaho to California and Arizona. 
SPECIMENS EXAMINED: West Klickitat County, Suksdorf, April 30, 1886; Rock Lake, 
Sandberg & Leiberg 118; Wawawai, Lake 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. 
aFl. Bot. Am. 1: 49. 1830. 
