URTICACRE 



303 



*' 



U. racemosa, Thomas. Cork elm. Pig. 450. Smaller tree than the last, 

 with corky-winged branches: leaves with straighter veins: samara with 

 sharp incurved points at the apex: flowers in racemes. Less common. 



U. alata, Mi'-hx. Wahoo elm. Small tree, with wide, corky ridges on 

 the branches: leaves small and rather thick, almost sessile, ovate to nearly 

 lanceolate and acute: samara downy, at least when young. Virginia, south 

 and west. 



2. CELTIS. Nettle-Tree. Hackberrt. 



Kim like iii looks, but the fruit a 1-seeded, berry-likr drupe: flowers 

 greenish, in the leaf axils, mostly diclinous; calyx 5-6-parted; stamens :, or 

 ii: stigmas 2, very long. 



C. occidentalis, Linn. Common hackberry. Middle-sized tree with 

 rough- furrowed hark: leaves ovate pointed, oblique at base, serrate: fruit 

 purplish, as large as a pea, edible in the fall when ripe. Low ground-. 



3. T6XYL0N. i >sagb Orange. 



Small tree, with dioecious flowers in catkins, and alternate, simple 

 leave-: sterile flowers in raceme-like, deciduous catkin-: fertile flowers 

 densely crowded in a head, with I sepals and J stigmas, the ovary ripening 

 into an akene. the whole flower-cluster becom- 

 ing fleshy and ripening into an orange-like 

 mass. 



T. pomiferum, Raf. i Madura aurantiaca, 

 Xutt.). Osagi orange. Pig. 151. Spiny, low 

 tree, much used for hedges, but not hardy in 

 the northernmost state-: leaves aarrow-ovate and entire, glossy: flowers 

 in Bpring alter the leaves appear, the fruit ripening In autumn. Mo. 

 and Can., south. 



I. MORUS. Mi LBERBY. 



Small to middle sized trees, with broad, alternate toothed or lobed 

 leave- and monoecious flowers, with I parted oalyx: stamens l. with fila- 

 ments at first Kent inward, the -laminate catkins n falling: fertile Mow 



era ripening a Bingle akene, but the entire catkin become 

 Mi ishj and blackberry -like, and prized for eating. 

 i l * , often lobed and not lobed on the 

 same branch. 



M. rubra, I. inn. Common wild mulberry. Often 

 a large tree In the south : leaves ovate acuminate, 

 oblique at the base, rough and dull on the upper surface 



and -ofter In math, dentate: fruit ' .. in. to 1 in. long, 



black red, swe< i. Wood yellow. Most abundant south, 



but growing as far north m Ma 



M. alba, I. inn. Whit i mulberry. Fig. i ' I 

 light green and usually glossy above, the reina prominent ami whitish beneath, 

 the teeth usually rounded or obtuse: fruit of rariabl tU d i ! In. lone. 



whitish, violet, or purple. China; planted for ornament and for it - fruit, also 

 for feeding silkworms. The much plant..! Mulberrj Ii form of It. 



i'>\. Toxylon pomiferum. 



alba. 



