142 BRITISH BOTANY. 



vided into 5 linear segments. Standard (upper petal of corolla) 

 dilated, striated, longer than the wings ; keel beaked. Stamens 

 monadelphous (in one parcel) . Style ascending; stigma terminal. 

 Legume turgid, short, sessile or shortly stipitate, ovate or oblong, 

 few-seeded. 



O. arvensis, Lin.? Roth? Rest-harrow or Cammock. — e.b.s. 

 2659. L.B.s. 254. 



A. 17. C. 75. Lat. 50-59°. Alt. 0-300 yds. Tern. 51-46°. 



Stems round, tapering, more or less hairy, rooting at the base ? 

 ascending, much branched and leafy (the branches sometimes 

 terminate in a spine). Leaves elliptical, oblong, or cuneate, 

 sharply and uniformly toothed at the upper end, tapering and 

 less toothed below, with long spreading glandular hairs ; stipules 

 united for the greater part of their length, the free part triangular 

 and pointed. Flowers axillary and solitary, on short pedicels. 

 Divisions of the calyx linear-lanceolate. Legume hairy, not so 

 long as the divisions of the calyx. Seeds finely tubercular. 



Roadsides, commons, and pastures. Perennial; June-Sep- 

 tember. 



0. procurrens, Wallr., 0. spinosa, Lin. Fl. Suec. Fl. Dan. v. 

 783. — Var. a. arvensis, Grenier. " Stems 18-24 inches high ; 

 leaves and flowers large, the latter in lax spikes ; floral leaves as 

 long as the calyx. — 0. arvensis, Lam." 



yS. maritima, Gr. — Stems slender, 4-5 inches high ; flowers 

 small, in short, dense spikes ; floral leaves (bracts) shorter than 

 the calyx. — 0. repens, Lin. 



O. antiquorum, Benth. (not Lin.) — 0. campestris, Koch. — 

 Thorny Rest-har7'ow, Baxter, iv. 289. — e.b. 682. l.b.s. 255. 

 A. 16. C. 60. Lat. 50-56°. Alt. 0-200 yds. Tern. 51-47°. 



Stems and branches woody, erect or nearly so, round, olive- 

 coloured, with woolly or hairy alternate lines, and very slightly 

 furrowed ; spines stout, 2-3 together, spreading. Leaves linear- 

 oblong, laxly toothed, glandular. Flowers large, solitary and 

 axillary, on pedicels, which are much longer than those of A. ar- 

 vensis, but not so long as the calyx. Divisions of the calyx linear- 

 lanceolate, glandular, not hairy. CoroUa twice as long as the 

 calyx. Legume ovate, compressed, as long as the calyx. Seeds 

 ovate, brown, tubercular, 2-4. 



Barren places, roadsides, pastures. Perennial; June-Sept. — 

 Grenier states that 0. antiquorum of Linnaeus is distinguished 



