30 



90. NASTURTIUM. 



inciso-pinnatifid. Pet. exceeding calyx, p. 6, 

 7. Marshes., s. e. G. 



91. TURRITIS. 



1. glabra. Root L. dentate, hairy. Stem 

 L. amplexicaul, quite entire, smooth. Pods 

 straight, six tinges as long as stalk, b. 5, 6. 

 Sandy or gravelly x>astures. 



93. ARABIS. 



A. Margin of seeds small or wanting. 



i. Stem L. cordate, amplexicaul. , 



a. Blade of Pet. spreading, quite distinct 

 from claw. Sp. 1-4. 



b. Blade erect, oblong ; tapering into 

 claw. Sp. 5-9. 



ii. Stem L. sessile,not cordate or sagittate. 



a. Pet. erect, ohlong, or narrowly cuneate. 

 Sp. 10-14. 



b. Blade spreading, distinct from claw. 

 Sp. 15-20. 



B. Seeds with a broad margin. 



i. Pet. oblongo-hnear. Sp. 21-24. 



ii. Pet. with a spreading blade. Sp. 25-28. 



A. Border of seeds none, or very small, hut 



sometimes dilated towards the top. 



i. Stern L. cordato-amplexicaul. 



a. Blade of Pet. spreading, distinct from claw. 



1. brassiciformis. Erect. No barren 

 shoots. L. smooth, quite entire. Pods ascend- 

 ing, on spreading stalks. Seeds without wings. 

 p. 5, 6. Rocky hills. Vosges. Rhine. Boh. Sty. 



2. alpina. Barren shoots decumbent. L. 

 lanceolate, acute, toothed, villous with branched 

 hairs. Root L. oblongo-obovate, attenuate 

 into stalk. Stalks longer than calyx. Pods 

 lax, flat, with a somewhat thickened margin. 

 (Seeds with a narrow membrane, Koch.) 

 p. 3-8. Stony inns. 



3. albida. " Stem ascending. L. toothed, 

 hoary with branched hairs, somewhat tomen- 

 tose. Root L. oblongo-spatulate. Pods slightly 

 spreading, smooth. Seed with a very narrow 

 margin of the same colour. Pet. two or three 

 times calyx. Stalks longer than calyx, p. 3-5. 

 Shady hills. Sic." — Guss. Seems, from de- 

 scription, to he the same as Sp. 2, which is not 

 mentioned as Sicilian. 



4. vema. Stem with spreading branches. 

 Root L. in a rosette, obovate, attenuate. L. 

 rough with tripartite hairs. Stalks shorter than 

 calyx. Rac. about 6-flowered. Pods linear. 



spreading. Seeds without wings. (In two 

 rows, J. W.) a. 4, 5. Dry sandy, s. Fr. It. 



b. Fet. ohlong, erect, tapering into claw. 



5. auriculata. L. somewhat dentate, rough 

 ■with branched hairs ; lower oval, attenuate 

 into a stalk. Stem L. acutely cordato-auri- 

 cular. Stalks hardly longer than calyx. Pods 

 remote, spreading, hardly wider than stalk. 

 Seeds bordered hy a dark line. a. 5. Sandy 

 and gravelly, s. Eur. 



6. sag^ittata. Stem, branches, and pods 

 erect. L. somewhat dentate, rough with hairs, 

 which are mostly branched. Root L. oblong, 

 attenuate into staUc. Stem L. lanceolate. 

 Auricles spreading. Pods with an almost 

 evanescent nerve. Stalks as long as calyx. 

 Seeds with a naiTow wing, obscurely dotted. 

 b. 5-7. Walls and rocky hills, s. Eur. 



7. Gerardi. Stem, branches, and pods 

 erect. L. oblong, dentate, rough with 

 branched hau's. Root L. attenuate, forming a 

 rosette. Auricles of stem L. closing on stem. 

 Pods very slender, nearly nerveless, compressed, 

 regularly knobbed. Seeds with a naiTow mar- 

 gin, reticulate, punctulate. b, 5, 6. Meadows 

 and borders. Worms. SUes. Westph. 



8. hirsuta. Stem, branches, and pods erect. 

 L. dentate, rough with hairs, which are usually 

 branched. Root L. oblong, attenuate into 

 stalk. Stem L. ovato-lanceolate. Auricles 

 spreading. Pods linear, with prominent nerve. 

 Seeds without dots, somewhat winged at the 

 top. Stalks as long as calyx, b. 5-7. Fields 

 and rough. 



9. saxatilis. L. somewhat dentate, rough 

 with branched haii's; lower oval, attenuate 

 into a stalk. Stem L. somewhat acutely 

 cordate, amicular. Stalks 3 or 4 times as long 

 as calyx. Pods spreading, compressed. Seeds 

 with a narrow wing. b. 6, 7. Dauphine. 

 Savoy. VaU. Pdm. 



ii. Stem L. sessile, not cordate or sagittate. 

 a. Pet. ohlo7ig, or narrowly cuneate, erect. 



10. Allionii. L. smooth. Root L. ovate 

 oblong, attenuate, somewhat dentate. Stem L. 

 ovate, serrate. Pods erect. StaUcs not much 

 longer than calyx, p. 6. Moist meadows. 

 Above Casotto in Pdm. 



11. stricta. L. ciliate and with scattered 

 hairs. Root L. obovate, sinuato-dentate. Stem 

 L. oblong. Rac. straight, about 6-ilowered. 

 Stalks spreading, hardly longer than calyx. Pods 

 nearly erect, with a prominent nerve. Seeds 

 winged at top. p. 5. Warm calc. rocks. 



