MULBERRY FAMILY 65 



thickened calyxes of many flowers; ovary sessile; stigmas 2, 

 linear, spreading; the fleshy perianth inclosing the ovary at 

 maturity.* 



1. M. rubra L. Red Mulberry. A small tree. Leaves cordate- 

 ovate, often 3-5-Iobed on vigorous shoots, taper-pointed at the apex, 

 serrate, rough above, white, densely woolly beneath. Mature fruiting 

 spikes oblong, drooping, dark red or purple, edible. On rich soil. 

 Wood very durable, bearing exposure to the weather. 



2. M. alba L. White Mulberry. A small tree. Leaves ovate, 

 heart-shaped, acute at the apex, rounded and often oblique at 

 the base, serrate or sometimes lobed. 

 Smooth and shining on both sides. 

 Mature fruit light red or white. In- 

 troduced and common about old 

 dwellincfs.* 



n. MACLURA Nutt. (TOXYLON) 



A small tree with milky juice. ^ ^ 



Leaves alternate, petioled, spines Fig. 13. Moms alba 



axillary. Flowers dioecious Stam- ^^ ^taininate flower, about four 

 mate iiowers m short axillary ra- times natural size ; B, cluster 

 cemes; calyx 4-parted; stamens 4, wamdn-f^ flowers. (After 

 inflexed in the bud. Pistillate flow- ^"' ^ 



ers in axillary, peduncled, capitate clusters ; calyx 4-parted ; 

 ovary sessile ; style long ; calyxes becoming thickened and fleshy 

 in fruit and aggregated into a large, dense, globular head.* 



1. M. pomifera Schneider. Osage Orange. A small tree with 

 ridged, yellowish-brown bark. Leaves minutely downy when young, 

 becoming smooth and shining with age, ovate or ovate-oblong, taper- 

 pointed at the apex, obtuse or subcordate at the base, entire, petioled. 

 Staminate racemes about 1 in. long. Pistillate flower clusters about 

 1 in. in diameter. Fruit yellowish, tubercled, 3—1 in. in diameter. 

 In rich soil. Native in Texas and extensively planted for hedges. 

 Wood very durable when exposed to the weather, and therefore used 

 for fence posts. As the wood does not swell or shrink with changes 

 in its moisture, it is highly valued for wheel hubs, etc.* 



III. BROUSSONETIA L'Her. 



Small trees with milky juice. Leaves alternate, petioled. 

 Flowers dioecious ; staminate in cylindrical spikes, with a 



