22 CRUCIFERE (Sond.) [ Barbarea. 
lines long ; style 1-2 lines. § is remarkable for its taller, and more slender stem, 
and chiefly for its elongated, less deeply cut leaves. In var. y. the stem is straight, 
all the leaves pinnatifid, and the pods an inch long. 
Ill. BARBAREA, R. Br. 
Sepals erect, equal at base. Siliqua 4-sided, 2-edged, valves keeled at 
back, awnless at the apex. Stigma capitate. Seeds not margined, ina 
single row. DC. Prod. 1 p. 140. 
Biennial or perennial herbs, dispersed throughout the temperate zones, smooth or 
rough with scattered, simple hairs. Leaves lyrato-pinnatifid or rarely undivided. 
Flowers small, yellow, in terminal racemes, Name in honor of St. Barbara, to 
whom these plants were formerly dedicated. 
1. B. precox (R. Br. Hort. Kew. ed. 2. 4. p. 109) ; lower leaves ly- 
rate, the terminal lobe ovate; wpper leaves pinnati-parted, the lobes 
linear-oblong, quite entire. DOC. Prod. 1. p. 140. Sm. E. Bot. t. 1129. 
Has. A weed, in cultivated ground, introduced from Europe. (Herb. Sond.) 
Plant 1-1} feet high, erect, biennial. 
IV. TURRITIS. L. 
Sepals spreading, equal at base. Siliqua linear, compressed, with flat 
valves. Seeds very numerous, in a double row. DC. Prod. 1 p. 141 
Biennial herbs, natives of the temperate zones, glabrous or rough with forked 
hairs. Leaves alternate, amplexicaul, entire. Flowers small, white, m long, ter- 
minal racemes. Name, from turris, a tower; the typical species 1s called in 
England ‘“‘ tower-mustard,” 
1. T. Dregeana (Sond. in Linn. 23. p. 2); glabrous, somewhat 
glaucous ; stem straight ; branches elongate, appressed ; leaves —— 
lanceolate, cordato-sagittate at base, very entire ; pods straight, muc 
longer than the pedicel ; seeds winged. Drege, 7537. 
Has. Witbergen, Drege / Jan. (Herb. Sond.) : 
Stem 4 feet high or more, terete, with many branches. Radical leaves not seen ; 
cauline 2!~3 inches long, 6 lines wide at base. Fruiting racemes 1-2 feet long. 
Flowers whitish ; petals 1 line long. Pod 3 inches long, 1 line wide ; stigma Se 
sile, orbicular ; valves one-nerved. Seeds oval, bordered with a very narrow mem- 
brane. 
V. ARABIS L. 
_ Sepals erect, equal or two lateral ones saceate at base. Siligua as in 
Turritis, but the seeds in a single row. DC. Prod. 1. p. 142. 
A large genus very abundant in the northern temperate zones, rare in the 
southern. Keane or perennial plants, rarely suffruticose, usually rough with 
forked or simple hairs. Leaves entire or lyrate, often amplexicaul. Flowers 17 
pine aria white or rosy. Name, apafis ; applied by Dioscorides to Lep 
ium Draba. : 
1. At? nudicaulis (E. Mey. in Hb. Drege) ; glabrous, leafy below, — 
naked above ; cauline asin radical pea petiolate, obovate- 
oblong, irregularly toothed, pinnatifid at base, the teeth obtuse, mu- 
se ase 3 Taceme nude, pedicels erecto-patent, as long as the pod. 
_ _ Has. Zondag River, Graafreynet ; Sneuwebergen and Uitflugt at Limoenfontein, 
