CM. The abbrevation of centimeter, a unit of length equal to 2/5 of 

 an inch. Two connected figures, as 2-6, mean that the range of size 



includes both 2 and 6. 



COMPOUND BUNDLE-SCAR. Made up of several scars, whether ap- 

 parent or not. 



COMPOUND LEAF. A leaf whose blade is divided into parts called 

 leaflets. Each leaflet may have a stalk, or petiolule ; stipels, cor- 

 responding to stipules ; and of course a blade. As distinguished 

 from a simple leaf on a twig, a leaflet has no bud in its axil. 



CONE-SHAPED. A round, hollow base with sides tapering up to a 

 point. 



CULTIVATED TREE. Tended by man. Applied to native or import- 

 ed trees. 



CUSHION. See LEAF-CUSHION. 



DECIDUOUS LEAVES. Remaining only one growing season. Fall- 

 ing usually in the autumn, like maple and elm, and at the latest in 

 early spring. Thus the term here includes semi-evergreen. De- 

 ciduous leaves are found only on twigs of the present season (in- 

 cluding spur-tips). 



DECURRENT. Continued down the twig, towards its base. 



DOUBLE-TOOTHED. Each tooth cut into one or more smaller teeth. 



DOWNY. Bearing soft, short hairs. 



ENCIRCLING. Making a circle around. 



END-BUD. A bud which covers the tip of the twig. See SIDE-BUD. 



ENTIRE. A margin without teeth or indentations. 



EVERGREEN. Remaining longer than one growing season. Eventu- 

 ally falling in two or more years. Found alive in winter and on 

 twigs of the present and of some of the past seasons. 



FLAKY. Falling oflF in small pieces. 



FLARING AWAY. Pointing away at an angle from the part bear- 

 ing it. 



FLESHY. Not hard or dry ; soft and watery. 



FOUR-SIDED. The easiest way to detcrmnie this in a leaf is to cut 

 the leaf across at the widest place and look down on the cut end. 

 In a twig the angles may usually be seen or felt. 



FRINGED. Edged with fine hairs. 



FURROWED. Marked like plowed ground with alternate longitudinal 

 ridges and grooves. The ridges and grooves usually intersect. 



GENERA. The plural of genus. See GENUS. 



GENUS. The plural is genera. A genus, like a species, is hard to de- 

 fine, but easy to illustrate. Examples of genera are oaks, maples, 

 etc. In writing the scientific name the genus name is placed first. 



GLAND. Usually seen as a tiny lump or nodule. 



GROWING SEASON. From spring to autumn for deciduous trees, 

 most of the growth occurring by middle summer. 



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