20 FLOWERS OK THE HILLS AND DRY PLACES 



Indicalive of I);irrcn ;^toliik1, Rest Ilarmw is mainly a sand plant, 

 requiring a sand soil derived from (ilder rocks, chiefly arenaceous, or 

 stony oround derived from Precambrian or granitic rocks. 



A mildew Pcronosporix irifolioriDii is parasitic on it. The beetles 

 Apion ononis, Psaniiiiobius porcico/fis; the Lepidoptera, Oak Eggar 

 iyLasioccDiipa fri/o/Ii), Bordered Sallow {//c/iot/iis luarginatd). Bor- 

 dered Straw (//. peltiger'). Satyr Pug [Eiipiihecia sa/yrata), Gracil- 

 laria ononis, Ptcrophora plucodactyla, P. acanthodactylus, GrapJiolita 

 citrana; many Heteroptera, Thcrapha hyoscyanii, Mctacanthus punctipcs, 

 Calocoris c/ienopodii, Orthoccphalus saliaior, Ortliotvliis ochrotricluis, 

 Dicypliiis globidifcr, D. aniuilaliis, Macrotylns solitarins, J/, payklutii, 

 Hoploniachiis Ihunbergii, Macrocolus horfit/aints; and the Homopteron 

 Dcltoccpha/us airi/orniis, infest this plant. 



Ononis, Theophrastus, is from the Greek onos, an ass (because they 

 are said especially to like it), and spinosa refers to its .spiny nature. 



Rest Harrow is called Whin, Cat \\ liin, Pinweed, Ciround Furze, 

 Harrow Rest, Horse's Breath, Lady-whin, Wild Liquorice, Rassels, &c. 



This thorny plant is troublesome in cornfields, hav'ng ligneous 

 stems and thick roots. All cattle leave it, but horses eat it freelv. 

 it is easily cultivated. 



Essential Specific Characters: — 



76. Ononis spinosa, L. — Stem erect, spinous, hairy, shrubby, leaflets 

 oblong, flowers rosy-pink, wings less than the keel, pods longer than 

 the calyx, seeds tuberculate. 



Hare's Foot Trefoil (Prifolium arvense, L.) 



Hare's Foot Trefoil is unknown in any ancient deposits in Britain. 

 A member of the flora of the North Temperate Zone it is found in 

 Europe, N. Africa, N. and W. Asia, ami is introduced in America. 

 Li Great Britain it is founil in ninety-four of the vice-counties. It is 

 common also in Ireland and the Channel Lslands. 



The occurrence of Hare's Foot Trefoil, whether wild or otherwise, 

 is an indication of dry soil. It grows in dry pastures inland, or on 

 barren stony ground, in all cases requiring a sandy subsoil. It is also 

 a common plant on waste ground, being often introduced into quarries 

 with fodder, and upon waste ground by building operations through 

 the transfer of materials by railway, &c. 



This handsome plant is tall ami erect, ha\'ing a siK'erv, downy ap- 

 pearance, with a slender trefoil habit. It is branched with short, spread- 

 ing, alternate, ascendinir branches. There are three oblono- leaflets. 



