16 



38. THLASPI. 



T: alpestre of Linn, is a doubtful plant. 

 Jordan, " Ann. de la See. Linu. de Lyon," 

 proposes to replace it by a new species ; but I 

 am by no means satisfied as to tbe constancy of 

 his distinctions. 



6. rivale. L. entire. Root L. subro- 

 timd, oblong, stalked. Stem L. subsagittate, 

 amplexicaul. SUicle cuneato-elliptic, 4-8- 

 seeded. Stigma nearly sessile, a. 5, 6. Sand 

 and gravel. High. Sic. Gennargentn. 



7. praecox. Stems many. Shoots short. 

 Stem L. oblongo-cordate. Silicic obcordate, 

 the mngs in the upper part as wdde as the ccU, 

 Style passing beyond the terminal notch. S. 

 8-10. p. 4, 5." Fi'iuli. 



8. alpinum. Stems many. Shoots like 

 runners. Stem L. cordate. SHicle oblongo- 

 oboordate. Wings not more than half as wide 



as ceU. S. 8-16. 

 e. Alps. 



p. 4, 5. Mountain pastures. 



C Seeds smooth. Fruit in a Corymb. 

 Fl. lilac. 



9. cepEeifolium. Stems many. Upper L. 

 sessile, without aiuicles. SUicle oblongo-obo- 

 vate, with a narrow wing. S. 8-12. p. 5. 

 Snowy. Alps. 



10. rotundifoliutn. Stems many. Upper 

 L. aiuiculato-amplexicanl. Silicle oblongo- 

 obovate, with a narrow wing. S. 6. p. 7, 8. 

 Very high, calcareous, stony. Alps. 



Not icell known. 



11. Sclirankii. L. hispid, entire. Root 

 L. stalked. Stem L. amplexicaul. Cal. shorter 

 than Pet. SUicle obcordate. Walls. Austria. 

 Not in Koch. 



Tribe II. LEPIBINEjE. 



89. HUTCHINSIA. 



A. L. pinnate. 



1. alpina. Stem simple, naked. Fruit in 

 a lengthened Rac. Pet. twice as long as de- 

 ciduous calyx. Silicle acute at each end. Style 

 short, p. "When the snow melts. High. 

 Pyr. Alps. Apen. 



3. brevicaulis. Stem simple, naked. Fruit 

 in a dense corymb. Pet. twice as long as 

 deciduous Cal. Silicle obovate, stigma sessile. 

 p. 7, 8. Wet, stony, high, granitic mountains. 

 e. Alps. 



3. petrsea. Stem branched, leafy. Fi-. 

 in a long Rac. Pet. hardly exceeding Cal. 



Silicic obtuse at each end. Stigma sessile. Co- 

 tyledons accumbent! a. 3-6. Rocks and 

 walls. 



B. L. undivided. Style filiform. 



4. stylosa. Dwarf. L. somewhat fleshy ; 

 lowermost obovate, in rosettes ; upper oblong, 

 sessile. Stalk shorter than silicle. Style long. 

 ■w. 5, 6. Mountains. It. 



5. brevistyla. L. somewhat fleshy, sub- 

 seiTate; the lowest obovate, stalked; 

 others somewhat sagittate, sessUe, acute. 

 Silicle emarginate. Style veiy short. Seeds 

 4-8. p. 4, 5. Sard, Cors. 



40. CAPSELLA. 



1. Bursa Pastoris. Root L. pinnatifid. 

 Rac. long. Silicle triangulari-obcordate. a. 

 3-11. Everywhere . 



2. pauciflora. Stem much branched. 

 Lower L. trifid ; others lanceolate, entire. Rac. 

 somewhat xmibeUate. Fl. 3-4, on long stalks. 

 Stigma neaiiy sessile. Silicle subrotimdo- 

 truncate. a. 6, 7. s. Tyr. 



3. procumbens. L. sinuato-pinnatifid, 

 sometimes nearly entire. Silicle obtuse at 

 each end. Stigma sessile. Seeds 10-12. a. 

 3, 4. Sea-shore. Pisa. s. Fr. Fribourg. 



41. LEPIDIUM. 



A. Valves somewhat turgid, not winged. 

 Style exsert. 



1. Draba. Silicle cordate, turgid, entii-e, 

 crowmed with filiform style. L. amjdexicanl, 

 lanceolate, toothed, a. 6, 7- Fields, m. and 



s. En. 



B. Silicle winged, emarginate. 



2. sativum. Cotyledons tripartite. Silicle 

 circular. L. variously divided and incise, 

 a. 4, 5. Escapes. 



3. campestre. Silicle ovate, with scaly 

 dots. Style not exceeding lobes. L. undi- 

 vided. Stem L. sagittate, toothed, a. 6, 7. 

 Fields. 



4. Smithii. Silicle ovate, nearly smooth. 

 Style twice as long as lobes. L. undivided. 

 Stem L. sagittate, toothed, p. 6, 7- Br. 



5. hirtum. Silicle oblong, haiiy. Style 

 somewhat exceeding lobes. Stem ascending, 

 branched at base. Stem L. sagittate, toothed, 

 villous, b. 6-8. Fields, s. Eu. 



