170 XIII. CRUCIFER^. Sinapis. 



2, C. Cheiri. — Wall-Flmcer. — 6"^ somewhat shrubby and decumbent at base ; 

 Ivs. entire or slightly dentate, lanceolate, acute, smooth ; branches angular ; pet. 

 obovate; siliques erect, acuminate.— Tj. From S. Europe. A popular garden 

 flower, admired for its agreeable odor and its handsome corymbose clusters of 

 orange or yellow flowers. Plant 1— 2f high. Jn. 



22. MATTHIOLA. R.Br. 



In honor of P. A. Matthioli, physician to Ferdinand of Austria, and botanic author. 



Calyx closed, 2 of the sepals gibbous at base ; petals dilated ; 

 siliques terete ; stigmas connivent, thickened or cornute at the back. — 

 Herbaceous or shrubby^ oriental plants^ clothed with a hoary ^ stellate 

 'pubescence. 



1. M. ANNurs. R. Br. (Cheiranthus. Linn.) Ten-v:eeks Stock.— St. herba- 

 ceous, erect, branched ; lis. hoary-canescent, lanceolate, obtuse, subdentate ; 

 siliq^ie subcylindrical, without glands. — A fine garden flower from S. Europe. 

 Stem 2f high, and, with the leaves, covered with a soft, stellate pubescence. 

 Flowers variegated. Jn. f 



2. M. iNCANUs. R. Br. (Cheiranthus. Linn.) Purple July Flower. — St. 

 shrubby at base, erect, branched; lis. lanceolate, entire, hoary-canescent; 

 siliques subcylindrical, truncate and compressed at apex, without glands. — (§) 

 One of the most popular flowers of the genus, native of England, &c. Stem 

 2f high. Flowers purple. — Several varieties are enumerated, as the Double- 

 flowered, Brompton Stock, and Brompton dueen. Jn. f 



3. M. FENESTRALis. R. Br. (Cheiranthus. Linn.) Windojo July Flower. — 

 St. suffruticose, erect, simple; Ivs. crowded, recurved, undulate, downy ; siliqioes 

 downy, without glands, broadest at base. — From S. Europe. Plant If high. 

 Flowers numerous, large, purple. Jl. Aug. f 



4. M. GrjEcus. R. Br. (Cheiranthus. Linn.) Grecian Stock. — St. herba- 

 ceous, erect, branched ; Ivs. lanceolate, glabrous ; siliques somewhat compressed, 

 without glands. — (g) From Greece. Plant about If high, distinguished from 

 the remainder of the genus by its smooth foliage. Flowers white, appearing 

 all summer, f 



23. SINAPIS. 



Sepals equal at base, spreading ; petals ovate, with straight claws ; 

 siliques subterete ; valves veined : style short and subulate, or ensi- 

 form ; seeds in a single series, subglobose, >>. — Fls. always yellow. 



1. S. NIGRA. Bluck Mustard. 



Lower Ivs. lyrate, upper linear-lanceolate, entire, smooth ; silique smooth, 

 somewhat 4-angled, appressed to the rachis of the raceme.— (I) In cultivated 

 grounds and waste places. Stem 3 — 6f high, round, smooth, striate, branching. 

 Leaves all petiolate, lower ones variously lobed and dentate, upper ones pen- 

 dulous and entire. Sepals and petals .sulphur-yellow. Pods very numerous, 

 nearly 1' long, beaked with the 4-sided styles. Seeds 00, small, globose, nearly 

 black, well known as a condiment. Jn. Jl. :j: ^ 



2. S. ARVENsis. Field Mustard. 



St. and Irs. hairy ; silique .smooth, many-angled, torose, about 3 times 

 longer than the slender, ancipital style. — Naturalized in N. Y., T. ^^ G., 

 and in Vt., Dr. Rabbins. Lower leaves large, sublyrate-pinnatifid, upper ones 

 oblong-ovate, all repand-toothed. Silique somewhat spreading, li' long. Seeds 

 large and black. Jn. — Aug. ^ 



3. S. ALBA. White Mur.tard. — Dvs. lyrate, smoothish ; siliques hi.spid, torose, 

 shorter than the ensiform beak; sds. large, pale yellow. — (i) Native of Europe. 

 Stem 2 — 5f high, thinly hirsute. Leaves all lyrately pinnate, dentate, petiolate. 

 Siliques spreading, about 4-seeded. The .seeds are used for about the same 

 purposes as those of S, nigra, much esteemed in medicine. Jn. Jl. X 



