134 TETRADYNAMIA SILICULOSA. [CI. 15. 



2. T. perfolidtum, 33. 2354. (Perfoliate S.) Pouch inversely heart- 



shaped. Stem-leaves heart-shaped, rather sharp at the base, 

 clasping the branched stem. Style very short. 

 Limest. past. rare. 0. 4, 5. Spreading. L. slightly toothed. 



3. T. alpestre, 2. 81. (Alpine S.) Stem-leaves arrow-shaped. Stems 



simple. Style prominent beyond the margin of the obovate ab- 

 rupt pouch. 

 Mts. N. of Eng. If. 6, 7. Stems straight. L. entire. FL white. 



4. T. Bursa-pastoris, 21. 1485. Capsella Bursa-past. Br. Fl. (Com- 



mon S.) Hairy. Pouch obcordate, somewhat triangular. Ra- 

 dical leaves pinnatifid. 

 Waste and cult. gr. 0.3—9. Rough. Pouches smooth^ not notched. 



325. COCHLEaRIA. Scurvy-grass. 



1. C. officinalis, 8.551. (Common S.) Radical leaves roundish ; those 



of the stem oblong and somewhat sinuated. Pouch globose. 

 Mts. & sea-shores. ©.5. Smooth. Fl. white. Pouch scarcely veiny. 



2. C. groenldndica, 34. 2403. (Greenland S.) Leaves kidney-shaped, 



fleshy, entire ; uppermost oblong. Pouch globose. 

 Scot. mts. 0. 8. Much smaller. Fl. large, white, tinged with purp. 



3. C. dnglica, 8. 552. (English S.) Radical leaves ovate, entire ; those 



on the stem sessile, lanceolate and toothed. Pouch elliptical, 

 strongly reticulated with veins. 

 Muddy sea-shores. . 5. Pouch twice the size, wrinkled. 



4. C. Ddnica, 10. 696. (Danish S.) Leaves all triangular and stalked. 



Pouch elliptical, reticulated with veins. 

 Muddy shores, rare. . 5, 6. Smaller. L. uniform, 3-lobed. Fl. white. 



5. C. Armoracia, 33. 2323. (Horse-radish.) Radical leaves oblong, 



crenate ; those of the stem lanceolate, either cut or entire. 

 Watery pi. ; introd. If. 4, 5. Roots long, white, pungent. Stems 2f. 



326. SENEBIeRA. Wart-cress. 



1. S. Coronopus, Coron. Ruellii, 24. 1660, (Common W.) Pouch un- 



divided, crested with little sharp points. Style prominent. Leaves 

 pinnatifid, subdivided. 

 Waste, gr. 0.6 — 8. Prostrate. Corymb dense, of small, white fl. 



2. S. didyma, C. didyma, 4. 248. (Lesser W.) Pouch cloven, of two 



round wrinkled lobes. Style scarcely discernible. Leaves pinna- 

 tifid, partly notched. 

 Waste gr. near the sea.0. 7. Smaller. Fl.numer. white. Stam. 2 — 4. 



327. IBERIS. Candy-tuft. 



1. I. amdra, 1. 52. (Bitter C.) Stem herbaceous. Leaves lanceolate, 

 acute, partly notched. Flowers in oblong clusters. 

 Chalky fields in the S., rare. . 7. Stems branched. Fl. hand- 

 some, white. 



328. ISATIS. Woad. 

 1. I. tinetoria, 2. 97. (Dyer's W.) Radical leaves copiously crenate ; 



