36 BRITISH BOTANY. 



sepals, sometimes wanting by abortion. Beak of the pod short, 

 obtuse. Wet places. Annual ; March-June. 



Var. sylvatica. — C. sylvatica, Link. This is a much slenderer 

 form ; the stem is quite smooth, not furrowed ; and the flowers 

 are smaller than in the type. It grows in dry sandy places in 

 woods, and flowers earlier than C. hirsuta. In 'Cybele^ its dis- 

 tribution is combined with that of C. hirsuta. , 



C. impatiens, Lin. 



A. 6. C. 10. Lat. 51-55°. Alt. OP-200 yds.* Tern. 48-46°. 



Stems erect, angular, furrowed, with erect branches, rarely 

 simple, leafy. Leaves pinnate, with numerous oblong-ovate or 

 elliptical-lanceolate entire or toothed leaflets ; petioles auricled at 

 the base. Sepals oblong. Petals caducous, small, often abor- 

 tive. Fruit (pods) in long lax clusters on slender spreading 

 pedicels ; pods slender, shghtly turgid, valves opening with elas- 

 ticity. Seeds ovate, yellow, with a brown rim. 



In shady places, rare. Annual ; June, August. 



Nasturtium, Br. — Herbaceous, branching, smooth, perennial, 

 rarely biennial, plants, with round or slightly angular stems, and 

 pinnate or pinnatifid leaves. Flowers corymbose. Calyx equal 

 at the base. Petals equal, entire. Stigma entire, or slightly 

 notched; style cylindrical. Pod cylindrical or slightly compressed ; 

 valves convex, without a dorsal nerve. Seeds in 2 rows, rounded- 

 compressed, not winged (irregularly disposed, or in .2-4 rows, 

 Coss et Ger.) . 



Sect. I. Flowers yellow ; dorsal nerve of the valves indistinct. 



N. amphibium, Br. — Roripa amphibia, Bess. Great Yellow 

 Cress, Water Radish, e.b. 1840. l.b.s. 101. 



A. 12. C. 40. Lat. 50-56°. Alt. 0-200 yds. in England. Tern. 

 51-47°. 



Root perennial. Stems robust, erect, or ascending, bluntly 

 angled and furrowed, branched, leafy. Leaves oblong-lanceolate, 

 tapering below, entire or toothed, the lower ones usually pinna- 

 tiftd. Petals slightly longer than the calyx. Pod roundish-oblong, 

 four times shorter than the pedicel, abruptly terminating in a 

 slender cylindrical beak. In watery places. Per. ; June-August. 



Var. a. indivisum. Leaves all undivided, entire, rarely toothed. 



* It grows at Godalniing, Surrey, which is only a few yards above the level of 

 high water. The tide flows nearly to Hampton Coiu-t, and the vale of the Wey has 

 only a very gentle acchvity. 



