STORRS AGKlCULTUIiAL EXPEUUAIl^NT STATIOX. 331 



29. Pith wide, l)rown. wiLli hollow chambers; fruit a nut 30 



29. Pith narrow, light colored; fruit a t>mall stone-fruit ol 



30. Downy patch present above leaf-scar; nut elong-ated 



Itutterinit (Juolaiis ciiirrt'iijit.'AUS 



30. r>owny patch absent from leaf-scar; nut round 



Ulnck A\'nliiu1: (Jufjlans nh/ni )itA(ii> 



31. Pith with hollow chambers; buds brown, terminal bud absent. 

 lateral buds appressed Haekberry (Celtis occidentalis) it.4ii4 



31. Pith with woody partitions in the solid g-round-mass; buds reddish, 



terminal bud present, lateral buds divergent 



Tupelo (Nyssa sylvatica) it.T>:i4 



32. Leaf-scars reg'ularly 2-ranked. i.e. arranged in 2 longitudinal rows 

 on the twig 33 



32. Leaf-scars regularly more than 2-ranked, i.e. in more than 2 rows 

 on the twig- 49 



33. Terminal bud absent (the last lateral bud may appear to l>e ter- 

 minal but absence of terminal bud is shown by small scar at 

 end of twig) :;^ 



33. Terminal bud present 34 



34. Buds stalked 35 



34. Buds not stalked 36 



35. Buds, for the most part naked, i.e. with unde^■eloped lea\'es ser\ing 

 the function of scales; woody, 4-parted fruits and the remains of 



last season's flo^vers generally present 



Witeli Hiizel (HdUKunelis i-irgini(vn(i )p.4~s 



35. Buds covered with bud-scales; fruit a woody cone-like catkin 



VIder ( A Inns) It. 4'2ii 



36. Stipule-scars nearly encircling twig; buds long and narrow, 

 generally over 5 times as long as wide, divergent; bud-scales in 



pairs, 4-ranked, 10 or more scales visible; bundle-scars f) 



Beeoh (Fagns) p.428 



36. Stipule-scars when present relatively short; buds stouter, generally 

 not over 4 times as long as wide; bud-scales less numerous .... ?,1 



37. Leaf -scars very narro'w. A'- shaped, swollen at the Z bu ndle- scars ; 

 buds long, appressed; bud-scale tipped with dark point; stipule- 

 scars absent Shad BunIi (A)nelanchier ca7ia(lensis) i».492 



37. Leaf-scars relatively broad; buds shorter; bud-scale without con- 

 spicuous dark point; stipule-scars present though often incon- 

 spicuous 38 



38. Bundle-scars 3; bark of j^oung stem and branches with horizon- 

 tally elongated lenticels, often peeling into papery layers; pith 

 generally elliptical often with irregularly toothed edges; fruit a 



catkin, immature catkins generally present on tree in winter 



Birch (Betnla) 104 



38. Bundle-scars several; lenticels not horizontally elongated; bark 

 never peeling in papery layers; pith more or less 5-pointed. star- 

 shaped; fruit a bur Chestinit (Castonr<i ifrnfata ) iAliO 



39. Leaf- scar almost entirely surrounding the buds; buds brown, 

 hairy, several massed together to form a bud -like cone; l)undle- 



scars raised, .generally 5 in a single curved line 



Vellit^v AA'<Knl (Cladrastis Jiitra) |».."i20 



39. Leaf-scar n(.»t more than half surrounding tlie bud: buds not massed 

 together into a hairy cone 40 



40 Bundle-scars 3 or more in a single curved line 43 



40. Bundle-scars more than 3 in a closed ellipse, double line, vari- 

 ously clustered nr irregularly scattered 41 



41. 2-3 scales visible t(t a bud; bundle-snars not ]n-omineut!y pro- 

 jecting j'^ 



41 4 or more scales visible to a bud; bundle-soars rather iirommentiv 

 projecting Mulberry (Morns) 140 



42 Twigs usuallv zigzag; pith roundish; buds and twigs mucilaginous 

 when chewed; fruit spherical, woody, ab..ut size of pea. attii'Mied to 

 a leafv bract Liadeii (Tilia) \>'u>i\ 



