90 DllUPACEiE. 



29. CERCIS. Linn.— Red Bud. 



(From the Greek KcpKn, 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. J. to Flor. W. to Miss. April. — A small tree with 

 grayish-brown bark. Flowers appearing before the leaves, of a dark ro.'je-color. 

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



Order XXXVIII. DRUPACE^.— 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. PRUNUS. Linn.— Plum. 

 (The Latin name ior 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. maritlma Wang: low ; branches seldom thorny ; leaves oval, ovate 

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

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

 Mich. P. UttoraLis Big. Cerasus pubescens and C. pijgmcsa D. C. 



Sandy sea-coast. Mass. and N. Y. to Ala. April, May. \i. — 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. tf* M. S. P. hiemalis Mich. Cerasus nigra 

 and hyemalis D. C. 



Banks of streams. Arct. Amer. toGeor. Louis, and Texas. April, May. \i. — 



