212 
CRUCIFERZE. 
Roripa curvisiliqua (Hook.) Bessey, Mem. Torr. Club, v, 169 (1894); Sisymbrium 
eurvisiliqua Hook. Fl. Bor. Amer. i, 61 (1829); Nasturtium curvisiliqua Nutt.; 
Torr. & Gr. FI. i, 74 (1838). 
Frequent in wet places, Julietta, Latah County; June 8 (No. 340). 
Roripa nasturtium (1..) Rusby, Mem. Torr. Club, iii, 5 (1893); Sisymbrium nastur- 
tium L. Sp. Pl. ii, 657 (1753); Nasturtium officinale R. Br. in Ait. Hort. Kew. ed. 
2, iv, 110 (1812). 
Frequent in wet places, Upper Ferry, Clearwater River, above Lewiston; 
June 2 (No. 298). 
Roripa palustris (L.) Bess. Enum, 27 (1821); Sisymbrium amphibium palustre L. Sp. 
Pl. ii, 657 (1753); Nasturtium palustre DC, Syst. ii, 191 (1821). 
Near Hope, Kootenai County; September 25 (No. 1029). 
Barbarea barbarea (L.) MacMillan, Metasp. Minn. Val, 259 (1892); Erysimum bar- 
barea L. Sp. Pl. ii, 660 (1753); Barbarea vulgaris R. Br. in Ait. Hort. Kew. ed. 2, 
iv, 109 (1812). 
Island in Clearwater River near Upper Ferry, above Lewiston; May 2 (No. 90). 
Also Clearwater River near mouth of Big Potlatch, and head of Little Pot- 
latch. 
Arabis arcuata (Nutt.) Gray, Proc. Amer. Acad. vi, 187 (1864); Streptanthus arcu- 
atus Nutt.; Torr. & Gr. Fl. i, 77 (1838). 
Shores and sandy soil near Hatwai Creek, Nez Perces County; April 30 (No. 79). 
Also Upper Ferry, Clearwater River, above Lewiston; valley of Lake Waha; 
Clearwater River, near mouth of Big Potlatch; and head of Little Potlatch. 
Arabis hirsuta (L.) Scop. Fl. Carn. ed. 2, ii, 30 (1772); Turritis hirsuta L. Sp. P1. ii, 
666 (1753). 
Sandy soil, near Hatwai Creek, Nez Perces County; April 24 (No. 41). 
Arabis perfoliata Lam. Encycl. i, 219 (1788). 
Common in sandy soil, island in Clearwater River, near Upper Ferry, above 
Lewiston; May 2 (No. 88). 
Arabis platysperma Gray, Proc. Amer. Acad. vi, 519 (1865). 
Dry soil at 2,500 meters altitude, Packsaddle Peak, near Lake Pend d’Oreille; 
August 6 (No. 852). 
Arabis retrofracta Graham, Edinb. New Phil. Journ. 7 (1829). 
A good species, distinct from 4. holballii. 
Frequent in sandy soil, island in Clearwater River, near Upper Ferry, above 
Lewiston; May 2 (No. 91). 
Arabis spathulata Nutt.; Torr. & Gr. FI. 81 (1838). 
Sides of Wiessner’s Peak, at 1,800 meters altitude, on the St. Joseph River, 
Kootenai County; July 8 (No. 601). 
Thelypodium laciniatum Endl. Gen. Pl. 876 (1836-40). 
Rocky banks, valley of Peter Creek, Nex Perces County; May 4 (No. 122). 
Also along the lower Clearwater River. 
Cardamine hirsuta L. Sp. Pl. ii, 655 (1753). 
Frequent in wet places, valley of Peter Creek, Nez Perces County; May 4 
(No. 111). 
Cardamine leibergii sp. nov. 
From a prostrate rootstock rooting like Nepeta glechoma; stem glabrous 
throughout, erect, 12 to 20 cm. high, leafy from the base; leaves few, alternate, 
simple, or on thrifty plants the lower pinnate by the development on the now 
elongated petiole of leaflets always much smaller than the terminal one, this 
shghtly 5 to 9 lobed or toothed and oval in general outline, or sometimes nearly 
