90 DRUPACE^E. 



29. CERCIS. Linn. Red Bud. 



(From the Greek xcpKi s, a weaver's shuttle ; being the form of the legume.) 

 Calyx 5-toothed, gibbous at base. Petals 5, with claws, 

 subpapilionaceous, all distinct. Wings larger than the stand- 

 ard. Stamens 10, free, unequal. Legume oblong, compressed, 

 1- celled, many-seeded; upper seminiferous suture margined. 

 Seeds obovate. 



C. Canadensis Linn. : leaves roundish-cordate, acuminate, villous in 

 the axils of the nerves ; legume on short foot-stalks ; flowers in small 

 fascicles. 



Banks of streams. N. 3. to Flor. W. to Miss. April. A small tree with 

 grayish-brown bark. Flowers appearing before the leaves, of a dark rose-color. 

 Legume about 3 inches long, acute at each end. Judas Tree. Red Bud. 



ORDER XXXVIII. DRUPACE^E. ALMONDS. 



Calyx 5-toothed, deciduous, the odd lobe superior. Petals 

 5. Stamens about 20, arising from the throat of the calyx. 

 Ovary superior, solitary ; styles terminal, with a reniform stig- 

 ma. Fruit a drupe. Seeds mostly solitary, without albumen. 

 Trees or shrubs, with alternate simple leaves. Stipules simple, 

 mostly glandular. Flowers white or pink. 



1. PRTJNUS. Linn. Plum. 



(The Latin name for a plum.) 



Calyx urceolate, hemispherical ; limb 5 -parted, deciduous. 

 Petals spreading. Stamens numerous. Drupe ovate or oblong, 

 fleshy, very smooth, covered with grayish dust; stone com- 

 pressed, acute at both ends, subsulcate at the margin, elsewhere 

 smooth. 



1. P. maritima Wang: low ; branches seldom thorny ; leaves oval, ovate 

 or obovate, acuminate, sharply serrate ; petioles usually with 2 glands ; 

 flowers few, bn short pedicels, umbellate ; drupe subglobose. P. acuminata 

 Mich. P. littoralis Big. Cerasus pubescens and C. pygiruea D. C. 



Sandy sea-coast. Mass, and N. Y. to Ala. April, May. fy. Stem 2 5 feet 

 high. Drupe often as large as the common garden-plum and eatable, but some- 

 times smaller and astringent ; the two kinds being sometimes on the same stem. 



Beach Plum. Sand Plum. 



2. P. Americana Marsh : branches somewhat thorny ; leaves ovate- 

 oblong, ovate or obovate, acuminate, sharply and often doubly serrate, 

 at length smooth ; umbels 2 5-flowered ; drupe roundish oval. P. nigra 

 Ait. P. mollis Torr. Fl. N. fy M. S. P. hiemalis Mich. Cerasus nigra 

 and kyemalis D. C. 



Banks of streams-. Arrt. Amer. toGeor. Louis, and Texas. April, May. Tj. 



