Nasturtium.] TETRADYNAMIA — SILIQUOSA. 253 



toothed hairy, cauline ones amplexicaul entire glabrous. E. 

 Bot. t. 777. 



Banks and road-sides in many parts of Ene:land, but not general ; ap- 

 parently most frequent in Norfolk and Suffolk. Bowling Bay, Scot- 

 land. Fl. May, June. ©. — One to two feet high. Leaves oblongo- 

 lanceolate, glaucous : radical ones toothed or sinuated at the base ; 

 cauline ones sagittate. Flowers yellowish-white. Pods long, erect. 

 Whole plant very erect and straight. 



21. Barbarea. Br. "Winter-cress. 



1. B. vulgaris, Br. {bitter Wi?iter-cress, yellow Rocket); lower 

 leaves lyrate, the terminal lobe rounded, the superior onesobo- 

 vate toothed often pinnatifid at tiie base, pods linear tereti-4- 

 angled acuminate Erysimum Barbarea, L. — E. Bot. i. 443. 



Pastures and hedges, frequent. Fl. May — Aug. l^. — 1 — 2 feet high, 

 stout, furrowed, branched, glabrous. Florvers yellow. The Rev. C. 

 Smith finds by Loch Awe, a var. with all the leaves lyrato-pinnatifid. 



2. ^.*prdcox, Br. {early Winter-cress); lower leaves lyrate, 

 upper ones pinnatifid, segments linear-oblong entire, pods linear 

 obtuse compressed. — Erysimum prcecox, E. Bot. t. 1129. 



Waste places, in Devonshire and elsewhere. Fl. Apr. — Oct. $ . — 

 1 — 2 ft. high ; slenderer than the last in every part. Flowers smaller ; 

 pods longer. 



22. Nasturtium. Br. Cress. 



1. N. officinale, Br. {Water -Cress); leaves pinnate, leaflets 

 ovate subcordate sinuato-dentate. — Sisymbrium Nasturtium, L. 

 ^E. Bot. t. 855. 



Brooks and rivulets, frequent. Fl. July. %. — A well known aquatic 

 and an excellent and wholesome salad. Lower leaves large ; of 5 — 7 

 distant leaflets, the terminal one the largest and roundest ; cauline leaf- 

 lets, subovate, all rather succulent, glabrous, more or less waved or tooth- 

 ed. Flowers white. Pods about an inch long, j^atent. 



2. N. sylvestre, Br. (creeping Nasturtium); leaves pinnate, 

 leaflets lanceolate cut, those of the uppermost leaves entire. 

 Sisymbrium sylvestre, L — E. Bot. t. 2324. 



Water-sides and waste places, but not common. Fl. July, Aug. If . 

 — Roots much creeping. Stem 1 foot high, angular, branched. Flowers 

 yellow. Petals much longer than the calyx. Pods short, patent or 

 curved a little upwards. 



3. N. terrestre, Br. (Marsh Nasturtiutn) ; leaves lyrato-pin- 

 natifid unequally toothed glabrous, root simply fibrous, petals 

 not longer than the calyx N. palustre, DC. — Sisymbrium, 



Willd. — S. amphibium, var. L. — S. terrestre, E. But. t. 1747. 



Watery places, in many parts of England and Scotland. Fl. June — 

 Sept. O . — One foot high, branched. Distinguished readily from the 

 last by its pinnatifid not pinnated leaves, its minute (yellow) jjetals and 

 more turgid pods. 



4. N. amjihibium, Br. {amphibious Nasturtium); leaves oblong 

 pinnatifid or serrated, root simply fibrous, petals longer than 

 the calyx. — Sisymbrium amphib. L. — E. Bot. t. 1840. 



