CRUCIFERiE. 55 



Lepidium. — Pouch roundish or oblong, cntii'e or notched, mth one seed in 



each cell. 

 Capsella. — Pouch triangular- olcor date. Seeds numerous. 

 SxiBTiLAElA. — Pouch ovate-oblong, laterally compressed, with many seeds. 



Teesdalia, Br. — Annual, almost glabrous plants. Leaves 

 mostly radical, in a rosette, lyrate-pinnatifid, rarely entire. 

 Flowers wliite. Sepals broad, spreading, more or less coherent 

 at the base. Filaments furnished with basal appendages. Pouch 

 roundish, notched, crowned by the short, sessile stigma, with 

 keeled and winged valves and two-seeded cells. Seeds lenticular- 

 compressed. 



T. nudicaulis, Br. Naked-stalked Teesdalia. — e.b. 327. 

 L.B.S. 65. 



A. 15. C. 50. Lat. 50-54°. Alt. 0-300 yards. Tern.' 52-45°. 



Stems usually numerous, the central one erect, the lateral 

 spreading-asccndiug, 2-4 inches high, sometimes with 2-4 leaves 

 which extend upwards about half the length of the stem. E,oot- 

 leaves numerous, in a rosette, lyrate-pinuatifid, rarely roundish 

 and entire, petiolate ; stem-leaves, when present, entire or toothed, 

 and sessile. Petals unequal. Filaments with membranous basal 

 appendages. Pedicels of the fruit spreading or reflexed. Fruit 

 concave on the upper side, in an elongated cluster. 



Dry sandy heaths. Annual ; April-June. On Barnes Com- 

 mon, Surrey, near London. This locality mil soon be used for 

 more lucrative purposes than the growth of botanical rarities. 

 The line of railway to Windsor from London passes through it j 

 and it is rapidly filling with houses now in the course of erec- 

 tion. A church and a cemetery occupy large portions of the 

 ground where this plant formerly grew. 



Thlaspi, Lin. — Annual or perennial plants, with undivided, 

 rarely pinnatifid leaves, and white flowers. Sepals equal. Pouch 

 obovate or oblong, or orbicular (round) , dorsally compressed, more 

 or less notched at the apex ; valves keeled, often winged. Seeds 

 ovate, pendulous. 



Sect. I. Pouch flat, orbicular. 



T. arvense, Lin. Penny Cress. — e.b. 1659. l.b.s. 60. 



A. 18. C. 60. Lat. 50-60°. Alt. 0-200 yds. Tern. 52-46°. The 

 altitude of this plant may safely be stated at 300 yards. It was 

 gathered in Clent, on the Walton hills, which are about 1000 feet 

 high, and cultivation extends to their summit. 



