64 
Cruciferae. 
3. Siliquas linear or linear-oblong, as long or rather longer 
than the peduncles, or at least a good half the length 
of the peduncles. Type of N. sylvestre . . 4 
— Siliquas (or silicules!) oval or oblong, only V 3 or J /4 
the length of their peduncles .... 5 
4. Peduncles of the fr. standing almost horizontal or slightly 
bent downwards. Siliquas shorter than their peduncles. 
Ls lyrate-pinnatifid (terminal segment large). N. anceps 
auct. p.—Damp places, water side, e. g. shores of Lake 
Constance and the Rhine; hitherto confused with the 
following. Lucerne (Langnau). 6 . riparium Gremli. 116. 
— Peduncles of the fr. simply spreading, forming a sharp 
angle with the axis. Siliquas gen. as long or longer than their 
peduncles. Ls deeply pinnatifid.—As the last; localities 
still to be verified. 6 sylvestre. R. Br. 117. 
5. Cauline ls pinnatifid, with linear, gen. entire, divisions. 
Stem 1—3 dm.— Gravel, pasturages; Italian Switz., Wallis, 
Monthey (lower Rhone valley), Realp. 6 
pyrenai'cum R. Br. 118. 
— Ls all undiv.; or (in the aquatic form) the lower ls 
pectinate- or lyrate-pinnatifid. Stem 4—8 dm. —By and 
in the water; here and there (wanting in Gr. U. L.). 6 
amphibium R. Br. 119. 
OBS. To be further investigated: N. amphibium-palustre (anceps Wahlb.), 
ampJiib.-sylvestre (barbarseoides Tausch), and palustre-sylvestre (brachystylum 
Wall.r).; 
33. Barbarea. Wintercress. XY ; 41. 
1. Fructiferous peduncles thinner than the ripe siliquas. 
Upper Is angularly toothed or almost pinnatifid, the lower 
with 2—4 pairs of segments ..... 2 
— Fr. peduncles almost as thick as the ripe siliquas. Upper 
ls pinnatipartite, the lower with 4—8 pairs of lobes 4- 
2. Pets light yellow only 1 /s longer than the seps (5—6 mm). 
Lateral lobes of lower ls very small, the last pair shorter 
than the terminal lobe. Siliquas erect. Hoods of seps 
bearing a tuft of hairs.—Damp places, ditches, road-sides; 
reported from near Aarau, Baar, Chur 5 
* stricta Andrz. 120. 
— Pets golden yellow, twice as long as the seps (7—9 mm). 
Lateral lobes of the lower ls larger, the last pair as 
large as the terminal lobe . .... 3 
3. Raceme dense at the commencement of flowering. Sili¬ 
quas erect-spreading, straight. Terminal lobe of the 
lower ls round-oval, often cordate at the base. As the 
last; everywhere. 5 ... . vulgaris R. Br. 121. 
— Raceme looser at the commencement of flowering. Sili¬ 
quas spreading, arched-ascending, longer than in the last 
(30 mm). Terminal lobe of the lower ls oval-rhomboidal. 
