Trees for Shade and Ornament 209 



trary size, we may repeat that the definition of a tree which 

 the writer made many years ago, and which Professor Sargent 

 adopted for his Silva has been followed. This recognizes 

 as trees ail woody plants which grow in nature as a rule with 

 a single stem, bearing a definite crown. Where, however, 

 a genus furnishes shrub forms as well as trees, these have 

 also been briefly referred to in the tree list. 



The height of trees varies greatly according to conditions 

 of growth, hence only an approximation to the usual 

 maximum dimensions can be given. We designate as tall 

 trees, those over 75 feet in height; medium size, from 25 to 

 75 feet; low, from 10 to 25; dwarfs, below 10 feet. 



For ready reference we give an alphabetical list of 

 the genera and species enumerated, the numbers in paren- 

 thesis preceding the species-name coinciding with those of 

 the species discussed in the following pages. Varieties are 

 placed in parenthesis. 



A. CONIFERS. TREES WITH NEEDLE-SH.\PED LEAVES 



Abies (23) aniabilis, (24) grandis, nana), (lod, pygmcea), (loe, 



(25) magnifica, (26) nohilis, aurea). 



(27) balsamea, (28) Fraseri, (29) Cryptomeria (17) Japonica. 



pectinata, (30) concolor, (31) Cunninghamia (22) Sinensis. 



Nordmanniana, (32) Cepha- Cupressus (4) sempervirens, 



lonica, (32a Appollittis), (t,;^) (4a fastigiata), (5) macro- 



Pinsapo, (34) Cilicica, (35) carpa. 



Veitchii, (36) homolepis. Gingko (37) biloba. 



Cedrvs {1) Allantlca,{ia, glauca), Juniperis (16) Virginiana. 



(lb, fastigiata), (2) Libani, (3) Larix (43) decidiia, (44) laricina 



Deodara. {Americana), (45) occidentalis, 



Cephalotaxus (83) Fortimei. (46) Lyallii, {a'j) leptolepis. 



Chamaecyparis (Retinispora) Eibocedrus (18) decurrens. 



(6) sphceroidea (thuyoides), (7) Picea (71) excelsa, (72) riibens 



Lawsoniana, (8) Nootkcensis, (73) alba, (74) pungens, 



(9) obtusa, (10) pisifera, (loa, ('j^)orientalis,{'j^a Kosteriana), 



plumosa), (lob, squarrosa), (loc, (756 Parryana), (76) polita. 



