Trfks ok thk Northkun L^nitkii Statks 2-> 



21. 'riionis coinmoiily l)r;inched, situjited above the axil 



of tlic leaf; leaf scar coveriii<y the two or mc:)re 

 superposed axillary buds; twigs prdished, often 

 zigzag. Gleditsia. (30). 



22. Not with three distinct bundle scars. 23. 



22. With three bundle scars. 24. 



28. Buds and twigs glabrous or nearly so; with few 

 thorns. Rhamnus. (34). 



23. P>uds and .sometimes twig> pubescent or downy; 



thorns i)r(^minent. Bumelia. ((W). 



24. Terniinal bud self-pruned; twigs s(^nie shade of black. 



brown, or reddish. Prunus. (27). 



24. Terminal bud present. 2o. 



2o. Ruds conical, pungent, pubescent, tw'igs glabrous or 

 ncarl}' so, mostly yellow-olive; trees with erect 

 growth, the branches not spreading as in most of 

 the apples. Pyrus. (22). 

 2o. Huds downy or pubescent, twigs usually pubescent, if 

 glabrous then dark reddish-brown; trees with 

 rounded crowns and si)reading branches. 



Malus. (23). 

 —26— 



2(1. Leaf scar.^ (|uite regularly 2-ranked. that is with ilie 



third scar over the first. 27. 

 2(). Leaf scars not 2-ranked. 38. 

 27. T-lundle scar I; visible 1)U(1 scale.-- 2; l\\ig> brown; 



pith >onietime.- with cavities. Diospyros. (7(»). 

 27. Bundle scars -■). -VI. 



27. Bundle scars more than :>. usually scattered. 2S. 



25. rith diaphragnied. -olid; bundle scars 5-7; bark with 



fetid odor; terminal bud elongated, naked, silky; 

 stipnlar .scar> none. Asimina. (11). 



28. l*ilh not (li;ii)hragme(l ; bark not with fetid odor. 2!». 



29. With very prominent medullary ray>. •'><>. 



29. Medullar}' rays inconspicuous. 3]. 



30. Winter buds usually long-p<iinted. with se\eral \>> 



numerous dr\' scales. Fagus. (-M). 

 3<i. Winter buds rather lleshy. u-nally with 1-.". visible 

 ■ scale> Tilia. (2!»). 



D. M. MILL LIBRAf^Y 

 North Carotin* State Cotlec« 



