142 ENGLISH BOTANY. 
Sus-Srecres II.—Brassica viminea. Bois. 
Piatt XCV.* 
Diplotaxis viminea, Reich. Ic. Fl. Germ. et Helv. Vol. II. Yetr. Tab. LX XXII. 
Fig. 4416. 
Diplotaxis viminea, D. C. et Auct. Plur. 
Sisymbrium vimineum, Linn. Sp. Pl. 919 
Leaves all radical; scapes leafless. Pedicels shorter than the 
fully expanded flowers. Petals not twice the length of the sepals, 
obovate, insensibly attenuated intoaclaw. Style slightly narrowed 
towards the base. 
Waste places at St. Peter’s Port, Guernsey (Rev. W. W. 
Newbould). 
Channel Islands. Annual. Summer, Autumn. 
Extremely like the variety a of Brassica muralis, but smaller, 
and producing leafless scapes from a rosette of radical leaves, 
which are generally less deeply divided and have short broadly- 
triangular segments, with the terminal one larger. The principal 
difference, however, lies in the petals, which are much shorter and 
narrower in proportion than in B. muralis, from which it appears 
to me to be only separable as a sub-species. As, however, muralis 
and viminea, have had distinctive specific names since the time of 
Linnzeus, I have not ventured to use either of these for the super- 
species, and have therefore called it ‘‘ brevipes,” from the shortness 
of the pedicel, the distinctive character between it and B. tenuifolia. 
I have not seen Mr. Newbould’s specimens of B. viminea. 
Small Sand Rocket. 
Tre V.—SISYMBRIEA. 
Cotyledons flat, with the radicle lying on the back of one of 
them (incumbent). Pod elongate, 2-valved. 
GENUS V.—SISYMBRIUM. Linn. 
Sepals equal at the base, or the lateral ones slightly gibbous. 
Petals equal, entire, usually elongate, and with long claws. Fila- 
ments without wings or teeth. Pod linear-elongate, sub-cylin- 
drical, terete or compressed; valves 3-nerved, the lateral ones 
sometimes indistinct. Stigma sub-sessile, disciform, slightly 2-lobed 
or emarginate with a thickened margin. Seeds usually numerous, 
ovoid or oblong, without a margin. 
* The Plate is drawn from a dried French specimen by Mr, J. E. Sowerby. 
