34 



M0RACEAE. 



Morus. Mulberry. 

 (Family Moraceae). 



Trees with rather scanty milky 

 sap: deciduous. Twigs moderate 

 or rather slender, rounded: pith 

 moderate, round, continuous. Buds 

 sessile, solitary or collaterally 

 multiplied, ovoid, oblique, with 3 

 or mostly a half-dozen 2-ranked 

 thin scales, the end-bud lacking. 

 Leaf-scars alternate, round or half- 

 round or obtusely triangular, 

 somewhat raised: bundle-traces 

 numerous and scattered or in an 

 ellipse or more or less definitely 

 aggregated into 3: stipule-scars 

 narrow, the one below the bud 

 larger. 



Mulberry twigs are frequently 

 mistaken for those of linden when 

 carelessly observed. Apart from 

 their browner color they differ in 

 their milky sap and in their more 

 numerous dry and thin bud-scales. 



1. Buds triangular-ovoid, short and closely appressed. 2. 

 Buds more elongated (6-8 mm.) and somewhat spreading. 4. 



2. Bud-scales uniformly colored. (White m.) (1). M. alba. 

 Bud-scales brown-margined. 3. 



3. Not weeping. (Tartarian m.). (2). M. alba tatarica. 

 Weeping, usually grafted as a standard. M. alba pendula. 



4. Bud-scales white-margined. M. acidosa. 

 Bud-scales dark-margined. 5. 



5. Twigs often downy above. (Red mulberry). (3). M. rubra. 

 Twigs glabrous. (Black mulberry). M. nigra. 



