62 BRITISH BOTANY. 



Leaves pinnate, on short petioles. Flowers on short, lateral or 

 terminal clusters. Calyx spreading. Petals minute or abortive. 

 Clusters of fruit oblong, nearly sessile. Pedicels spreading, fili- 

 form, about as long as the pouch. Pods notched both at the base 

 and summit, granulate. 



Waste places. Annual ; June-August. — It has been noticed 

 in several parts about London, as at Highgate, close to the Arch- 

 way ; Brixton, near the church ; Kew churchyard ; and in gar- 

 dens between the river and Kew Green. It may be said that 

 it owes its existence in the last-mentioned locality to the Bo- 

 tanic Gardens ; its existence however in the Royal establishment 

 appears more precarious than in the churchyard, where it has 

 now maintained itself several years. 



IsATis, Lin. — Biennial, glaucous plants, with entire leaves and 

 yellow flowers. Sepals spreading, not enlarged at the base. 

 Stamens without appendages (lateral enlargements). Pouch 

 one-celled by abortion, one-seeded, not opening, oblong or ovate- 

 oblong, flattened as if winged ; valves united, compressed almost 

 flat; partition rudimentary (imperfect). Stigma sessile. Seed 

 oblong. 



I. tinctoria, L. Woad. — e.b. 97. l.b.s. 59. 

 A. 9? C. ? 



Hoot biennial. Stem erect, branching above, rigid, glabrous 

 or only slightly hairy at the base. Root-leaves oblong, tapering 

 towards the base, hairy; stem-leaves lanceolate-sagittate, clasp- 

 ing, glabrous or nearly so. Flowers numerous, small. Pouch 

 oblong-linear, obtuse or with a blunt point, tapering at the 

 base, pendulous on elongate filiform pedicels. 



Guildford, in a chalky field, in which there is a chalk-quarry, 

 on the clifis of which, and on the debris of the quarry itself, the 

 plant has grown very plentifully for many years. (Since the 

 beginning of the present century.) I never observed the plant at 

 Albury, nor even on the west side of the river Wey, except an 

 occasional straggler. — A.I. Biennial; May-June. 



Cakile, Tourn. — Annual, succulent plants, with branching 

 stems, pinnatifid leaves, and purplish or white flowers. Outer 

 sepals protuberant at the base. Pouch, not opening, of two 

 joints ; lower joint persistent, cylindrical or turbinate (like a 

 top) at the base, dilated above, and forming two lateral enlarge- 



