210 ENGLISH BOTANY. 
GENUS XXIT.—HUTCHINSIA. BR. Brown. 
Sepals nearly erect, equal at the base. Petals equal, entire. 
Filaments without wings or appendages. Pods compressed at 
right angles to the replum, flattish above, convex beneath, oval, 
scarcely notched at the apex; valves keeled down the back, but 
not winged; style almost none. Seeds 2 in each cell of the pod, 
oblong-ovoid, compressed, not margined. 
Small, nearly glabrous annuals. Radical leaves in a rosette, 
but decaying early; stem leaves numerous, all deeply pinnatifid. 
Flowers small, white, disposed in corymbs which afterwards 
elongate into short racemes. 
This genus of plants was named after Miss Hutchins, of Belfast, a lady whose name 
is greatly regarded by botanists, and who contributed largely to the information given 
in the first edition of the “ English Botany” by Sir J. E. Smith, who acknowledges his 
obligations to her, especially as regards submarine plants. 
SPECIES I—HUTCHINSIA PETRAA., BR. Brown. 
Puate CLI.* 
Teesdalia petreea, Reich. Ic. Fl. Germ. et Helv. Vol. II. Tetr. Tab. VI. Fig. 4190. 
Lepidium petreum, Linn. Sm. Eng. Bot. No. 111. 
Petals scarcely longer than the sepals, oblanceolate. Pod rounded 
at the base, obtuse, and very slightly notched at the apex. 
On limestone rocks, and on walls in the West of England from 
Somerset to Yorkshire; also naturalized on the walls of Eltham 
churchyard, in Kent. 
England. Annual. Spring. 
Stem branched, especially near the base, 1 to 3 inches high. 
Radical leaves stalked, almost pinnate, with small elliptical rather 
distant segments, the terminal one not larger than the others ; 
stem leaves similar, but much shorter, sessile, and with the 
segments more evidently connected together. Flowers about 
zo inch across. Fruit pedicels spreading, $ to + inch long. Pod 
about 3'9 inch long by 35 inch broad, very slightly attenuated 
towards the apex. Seeds pale reddish brown, finely punctured. 
Plant green, often with a reddish tinge, clothed with short scattered 
hairs, those on the stem starlike. 
Rock Hutchinsia. 
* The Plate is E. B. 111, with a pod added by Mr, J. E. Sowerby 
