MORACEAE. 67 



7. Buds conical or pyramidal, gray-pubescent. 8. 



Buds round or ovoid : entirely glabrous. Q. alba. 



8. Leaves auricled at base, glabrous. 9. 



Leaves not auricled, midrib sometimes hairy. Q. sessiliflora. 



9. Round-topped. Q. Robur. 

 Columnar. Q. Robur fastigiata. 



10 Buds essentially glabrous, n. 



Buds pubescent: lobes of leaves widened upwards. 13. 



11. Buds large (often 4X7 mm.). 12. 



Buds small (scarcely 3X4 mm.). Q. palustris. 



12. Lobes of leaves narrowed upward, dull. Q. rubra. 

 Lobes of leaves widened upward, glossy. Q. coccinea. 



Family MORACEAE. Mulberry Family. 

 A family of few genera and, except for the tropical figs, 

 few species, with milky juice: constituting the principal source 

 of India rubber and producing the edible mulberries and figs. 

 The Osage orange is extensively used for hedges. 



MACLURA. Osage Orange. "Hedge." 



Deciduous milky-juiced small trees with rough-ridged bark, 

 that of the roots peeling in light orange flakes ; hard light brown 

 wood with the vernal ducts larger and crowded and those of 

 summer in a wavy tangential pattern ; somewhat raised half- 

 round or 3-sided leaf-scars with bundle-traces aggregated in a 

 broken ellipse; no stipule scars; subglobose buds with several 

 exposed scales, usually producing a spine from the axil of one; 

 moderate petioled leaves often clustered on short spurs; dioeci- 

 ous apetalous flowers in stalked catkins or heads ; and very large 

 aggregate green fruit with fleshy sepals and seed-like akenes. 

 (Toxylon) . 

 Leaves lance-ovate : fruit 5-10 cm. M. pomifera. 



BROUSSONETIA. Paper Mulberry. 



Deciduous trees with rather smooth mottled bark; milky 

 sap ; yellowish white soft wood with numerous rather large 

 ducts in the spring growth and smaller diffused ones in the 

 later growth, marked tangential pattern of wood parenchyma in 



