DKUPACEAE 109 



ing at base to the soon glabrous petiole, 5" or less long : fruit red, 6 // -8 // 

 broad. Of infrequent occurrence. May. 



4. C. mollis (T. & G.) Scheele. 10-40 high : leaves broadly ovate, 

 truncate or cordate at base, 1^-5^ long, l / -5 / wide : petioles persistently 

 short-tomentose : fruit red, edible, S^-IO" broad. Common in woods. 

 Probably includes several species. April-May. 



FAMILY 60. DRUPACEAE DC. 



Trees or shrubs with alternate petioled leaves and perfect regular 

 flowers. Sepals and petals 5 each. Stamens numerous. Pistil solitary, 

 superior, 1-celled, 2-ovuled. Fruit a 1-seeded, edible drupe. 



Flowers white. 1. PRUNUS. 



Flowers pink. 2. AMYGDALUS. 



1. PRUNUS L. 



Stamens 15-20. Drupe glabrous. 



Flowers preceding the leaves. 



Leaves pubescent beneath. 1. P. lanata. 

 Leaves smooth beneath. 



Leaves ovate-lanceolate. 2. P. hortulana. 



Leaves lanceolate. 3. P. angustifolia. 



Flowers following the leaves. 4. P. serotina. 



1. P. lanata (Sudw.) Mackenzie & Bush, n. comb. WILD PLUM. 

 10-20 high : twigs, pedicels and both sides of the calyx-lobes densely 

 short appressed -pubescent even in age : leaves ovate, long-acuminate, 

 sharply serrate, usually strongly pubescent beneath : flowers in umbel- 

 like clusters : calyx teeth not glandular : drupe 9 // -12 // in diameter. 

 Common in dry places. April-May. (P. Americana lanata Sudw. ) 



2. P. hortulana Bailey. GOOSE PLUM. 15-30 high : leaves ovate- 

 lanceolate, long-acuminate, thickish, coarsely serrulate, glabrous : pedi- 

 cels glabrous : calyx lobes pubescent on both sides, glandular-serrate : 

 drupe 9 // -12 // in diameter. Frequent in bottom lands along the Missouri 

 Eiver. April-May. Our form is var. Mineri Bailey. 



3. P. angustifolia Michx. HOG PLUM. 8-15 high : leaves lance- 

 olate, acute, serrulate, glabrous : flowers cymose : fruit 6 // -9 // in di- 

 ameter. Occasionally adventized along railroads near Leeds, Independ- 

 ence and Lee's Summit. 



4. P. serotina Ehrh. WILD CHERRY. 30-90 high : leaves oval- 

 lanceolate, acuminate, serrate with appressed teeth : flowers in spread- 

 ing, glabrous racemes : drupes globose, 4 /x broad. Rather common in 

 woods throughout. April-May. A form with pubescent racemes occurs. 



2. AMYGDALUS L. 

 Stamens 20-30. Drupe velvety. 



1. A. Persica L. PEACH. 15-30 high : leaves ovate-lanceolate, 

 long-acuminate, serrulate, glabrous: flowers large, pink, clustered on 



