liORTUS GRAM1NEUS WOBURNENSIS. 325 



plant occupied would be naked the second year; and these spots 

 afford every encouragement to the growth of weeds, as well as the 

 decaying roots afford nourishment to the life of grubs. 



HEDYSARUM onobrychis. Sainfoin, or Cock's-head. 



Generic character: Keel transversely obtuse; legume jointed, 

 with one seed in each joint. 



Specific character : Legumes one-seeded, prickly ; wings of the 

 corolla equal in length to the calyx ; stem elongated. 



Obs. Stems round, striated, at first procumbent, in flower 

 ascending : stipules in pairs, oval-lanceolate, terminated by a 

 long point with membranaceous edges, sometimes fringed with 

 a few hairs. Leaflets eight or ten pairs, rather distant, and an 

 odd one ; lower eliptical, upper lanceolate or linear-lanceolate, 

 all with projecting points at the end ; young ones with the 

 mid-rib beneath, and the margins fringed with hairs. Le- 

 gume hemispherical, compressed with wrinkled prominences: 

 Wood. MSS. ; E. Bot. t. 96; F. Rust. t. 47; Huds. 322; 

 Jacquin. t. 352 ; Park. Theat. 1082, 1, Caput gallinaceum. 



Native of Britain. Root perennial. 



Experiments. At the time of flowering, the produce from a 

 poor siliceous sandy soil is 



Produce per Acre, 

 dr. qr. Ibs. 



Grass, 10 oz. The produce per acre - 6806 4 



83 dr. of grass weigh, when dry 25 } 



The produce of the space, ditto 50 5 



The weight lost by the produce of one acre in drying 4679 4 12 

 64 dr. of grass afford of nutritive matter 307 

 The produce of the space, ditto 723 



At the time the seed is ripe, the produce from a 



rich clayey loam is 



Grass, 13 oz. The produce per acre - - 8848 2 



80 dr. of grass weigh, when dry - 32 7 

 The produce of the space, ditto 83 J 5 3539 



The weightiest by the produce of one acre in drying 5308 14 

 64 dr. of grass afford of nutritive matter 22^ 

 The produce of the space, ditto 8 Oi J 



The produce of sainfoin on a clayey loam with a sandy subsoil, 

 is greater than on a siliceous sandy soil incumbent on clay ; but 



