LEGUMINOS^ 89 



angular, 4-8 in.; grassy places; Southern Switzerland, 

 Pyrenees. 



Order XXIX.— ROSACEA. 



Flowers regular; calyx inferior or superior, 5-lobed; 

 petals usually 5, rarely o, distinct ; stamens numerous, 

 rarely few, inserted on the calyx-tube ; carpels i or more, 

 distinct or more or less united, free or adnate to the 

 calyx-tube ; ovules i or 2 in each carpel. Herbs, shrubs, 

 or trees, with alternate simple or compound stipulate 

 leaves. A very large order, found in all parts of the 

 globe, but most abundant in the cooler. 



Tribe Prune^e. — Calyx inferior, deciduous ; carpel i ; 

 fruit a drupe (stone-fruit); trees or shrubs with simple 

 leaves; stipules small, deciduous. 



I. Prunus, L. 



Characters of the Tribe. 



P. spinosa, L. {communis^ Huds.), Sloe, Blackthorn ; 

 branches all spiny, flowers small, appearing before the 

 leaves ; P. insititia, L., Bullace ; with broader leaves and 

 larger fruit, and the branches not all spiny ; P, Cerasus, 

 Wild Cherry; flowers large, in umbels of 2-5, leaves 

 crenate, glabrous ; P. avium, L. ; flowers large, in umbels 

 of 2-5, leaves sessile, pubescent beneath ; P. Padus, L., 

 Bird-Cherry; flowers smaller, in axillary or terminal 

 racemes; all in hedges and thickets, the last three often 

 planted. Also P. Mahaleb^ L.; flowers in short erect 

 3-12-flowered racemes, leaves roundish-ovate, slightly 

 cordate ; mountain woods ; Southern Switzerland, Tirol, 



