170 Xlll. CllUClFEPwE. SiNAPis. 



2. C. Cheiri. — Wall-Flov:er. — ,5/. somewhat shrubby and decumbent at base; 

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

 obovate; siliques erect, acuminate. — '2J. 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. ANNUus. R. Br. (Cheiranthus. Liim.) Ten-weeks Stock. — St. herba- 

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

 silique 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. ■\ 



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

 shrubby at base, erect, branched; Ixs. 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 Glueen. Jn. f 



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

 St. sufii^uticose, erect, simple ; Ivs. crowded, recurved, undulate, dowmy ; siliqiies 

 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, t 



23. SIN APIS. 



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. Black Mustard. 



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

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

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

 Leaves all petiolate, low^er 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. :|:^ 



2. S. ARVENsis. Field Mustard. 



St. and Ivs. hairy ; silique smooth, many-angled, torose, about 3 limes 

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

 and in Vt., Dr. Rohbins. Low^er leaves large, sublyrate-pinnatifid, upper ones 

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

 large and black. Jn. — Aug. ^ 



3. S. ALBA. ^VJdte Mustard.— Lvs. lyrate, smoothish ; siliques hispid, torose, 

 shorter than the ensiform beak ; sds. large, pale yellow. — ® 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. ^ 



