140 ' CRUCIFER^. Sisymbrium. 



Var. Sonnei, Robinson, n. var. Leaves deeply bipinnatifid; pinnaB ovate or broadly 

 oblong, pinnules very short and broad, rounded at the ends : pods short, on moderately 

 spreading pedicels (3 or 4 lines in length). — Sierra Nevada Mountains at Truckee, Calif., 

 C. F. Sonne, July, 1890, no. 19. 



Var. filipes, Gkay. Foliage more nearly of the type, but the segments of the upper 



leaves tending to become elongated, linear, and nearly or quite entire : fruiting raceme lax ; 



pedicels 5 to 9 lines long: capsules 5 to 7 lines in length. —PI. Feudl. 8; Brew. & Wats. 



Bot. Calif, i. 41 ; Macoun, Cat. Canad. PI. 47. S. longepedicellatum, Pournier, 1. c. 59, excl. 



syn. S. incisiuH, var. o, xerophilum, Pournier, 1. c. 64. — Carson City, Nevada, to Oregon 



and Brit. Columbia. Reported by various collectors from S. California, but specimens so 



labelled which have been received from that region are rather to be referred to the type. 



§ 4. StenophrXgma, Celak. 1. c. (as genus). Leaves chiefly rosulate at base, 



entire or serrate ; those of the stem few or reduced, sessile by a narrow base : 



pubescence of branched hairs, not canescent : flowers small, white : siliques 



slender, tetragonal-cylindric, slender-pedicelled : midrib of the septum so broad 



and thin as to be wholly obscure. 



S. ThaliAnum, Gay. (Mouse-ear Cress.) A slender fibrous-rooted annual, a span high, 

 more or less branched : leaves oblauceolate, obtuse, an inch or two in length : pods purplish, 

 scarcely half incli long on spreading filiform pedicels of nearly equal length. — Ann. Sci. 

 Nat. ser. 1, vii. 399, in note; Pournier, 1. c. 126; Gaud. PI. Helv. iv. 348. Arabis Thaliana, 

 L. Spec. ii. 665 ; DC. Syst. ii. 226. Conringia Thaliana, Reichenb. Ic. PI. Germ. ii. t. 60. 

 Stenophrayma Thaliana, Celak. 1. c. — Frequent in dry light soil, Massachusetts to Georgia 

 and westward to Kansas; fl. in early spring. (lutrod. from Eu.) Mr. Thomas Meehan has 

 found the earliest flowers sometimes apetalous. 



28. BRAYA, Sternb. & Hoppe. {Count F. G. de Bray, born at Rouen, 

 1765, ambassador to Bavaria and while there for some time president of the 

 Eegensburg Botanical Society.) — Root single, usually thickish, bearing a multi- 

 cipital caudex. Leaves chiefly tufted at the base. Flowers white or purplish, 

 during anthesis commonly in a globular head. Fruit sub-terete or somewhat 

 compressed, varying in outline from lanceolate to linear : septum of peculiar and 

 characteristic structure, with cells thick-walled and elongated transversely or 

 very obliquely. — Regensb. Denkschr. i. pt. 1, 65; DC. Syst. ii. 210; Benth. &, 

 Hook. Gen. i. 82. Flatypetalnm, R. Br. in Parry 1st Voy. Suppl. to App. 

 266. — Arctic and alpine plants of low growth, distinguished from Parrya chiefly 

 by their smaller flowers and incumbent cotyledons, from the still more nearly 

 related Eutrema by the less leafy stems, less ancipital pods, larger and usually 

 bifid stigma, as well as by the branched pubescence and complete septum of 

 peculiar structure. [By B. L. Robixson.] 



B. purpurascens, Bunge. Perennial from a stout fusiform root : leaves fleshy, spatu- 

 late, entire, glabrate, often ciliate toward the base, crowded upon the dense multicipital 

 caudex : stems one to several, usually leafless, half inch to three or four inches in height, 

 commonly more or less puberulent with rusty branciied hairs : pods lanceolate or short- 

 oblong, style slender, nearly half line in length ; stigma shortly but distinctly 2-lobed. — 

 Bunge in Ledeb. Fl. Ross. i. 195. B. alpina of authors as to Am. pi. so far as specimens 

 show, not of Sternb. & Hoppe, which has more slender pods in denser raceme, shorter styles, 

 and more entire stigma. B. alpina, var. Americana, Hook. PI. Bor.-Am. i. 65; Torr. & 

 Gray, PI. i. 111. B. glabella, Richards, in Franklin 1st Jour. ed. 1, App. 743 (reprint, p. 15), 

 a form with somewhat leafy stem and more elongated fruiting raceme. B. arctica, Hook, 

 in Parry, 2d Voy. App. 387. B. alpina, var. glabella, Wats. Bibl. Index, 51. Platypetalum 

 purpurascens, & P. dubium, R. Br. in Parry, 1st Voy. Suppl. to App. 267, & Flora, vii. pt. 1, 

 Beil. 71, 72. — Rocky Mountains, lat 52° to 57°, Drummond, and Hudson Strait, Bell, to the 

 Arctic Sea. (Greenland, N. Asia, Spitzbergen.) 



