3S0 



ARBORICULTURE 



ARBORICULTURE 



3. Trees with colored foliage, 



A. Glaucous. 

 B. Susceptible to frost {20° F. and perhaps less). 



BB. Evergreen. 



Acacia Baile>'ana. 

 Acacia dealliata. 

 Acacia glaucescens. 

 Acacia salicina. 

 Cocos au-itralis. 

 Eo'thoa unnnta. 

 £ucal>*|)tus globulus ipollarded 

 to protiuce suckers). 



BB. 



Codrus atlantica var. glaiini. 

 Cedrus DtHxiara var. glauca. 

 Picea puugeos var. caerulea. 



Kucalpj'tus polyaiithemoa. 

 Kucalyptus Uisdonii. 

 Eucalyptus sideroxylon var 



pallens. 

 I,cuoadendron argenteum. 

 Phcenix dactylifora. 

 Washingtoaia Souora;. 



Hardy. 



Picea pungcns var. glauca. 

 Sequoia sempervirens var. 

 glauca. 



AA. Purple or bronze, 



B. Susceptible to 25° F. 



Ricinus cambodgeosis. Ricinus communis var. Gibsooii 



BB. Hardy. 



Fagus sylvatica var. purpurea. 



Fagus sylvatica var. purpurea 



Riversii. 

 Prunus cerasifera var. atro- 



purpurea. 

 Prunua Persica, var. 



Acer platanoidcs var. Reiten- 



bacnii. 

 Acer platanoides var. Schwed- 



leri. 

 Betula alba var. atropurpurea. 

 Cryptomeria japonica var. 



elegans. 



4, Wide-Spreading trees for shadcj mostly with rounded 

 outline. 

 It frequently happens that the owner of a Cahfornia 

 garden desires a wide-spreading tree in the back or one 

 comer of his domain, under which to swing a ham- 

 mock on a hot day; such trees are also useful in the 

 echool-yard, affording welcome shade in which the 

 children can eat their lunch. 



A. Deciduous, all hardy. 



B. Groxdh rapid or medium. 



c. Suckers likely to be troublesome. 



Populus alba. 

 Robinia Pseudacacia. 



Ulmus americana. 

 Ulmus racemosa. 



cc. Suckers not troublesome. 

 D. Requiring a great deal of water. 

 Salix babylonica. 



DD. Requiring not much water. 



Acer macrophyllum. 



Acer N'egundo. 



Acer Negundo var. californicum. 



Acer platanoides. 



Acer platanoides var. Reiten- 



bachi. 

 Acer platanoides var. Schwed- 



leri. 

 Acer pseudoplatanus. 



Acer saccharinum. 

 Acer saccharinum var. Wieri. 

 Carya illinoensis (PccanJ. 

 Fraxinus americana. 

 Fraxinus vclutina. 

 Quercus lobata. 

 Qucrcvxs pedunculata. 

 Ulmus campeslria. 



BB. Growth somewhat slow. 



Acer campeatre. 

 ^Hculus camea. 

 Mscu\\i9 Uippocastanum. 

 Castanea uativa. 

 Fagu.-t sylvatica var. purpurea. 

 Juglanii Sieboldiaria. 

 Liriodendron Tulipifera. 

 Melia Azedarach var. umbra- 



culiforrois. 

 Platanus orientalis. 



Quercus coccinea. 



Quercus Kelloggii. 

 Quercus lobata. 

 Quercus macrocarpa. 

 Quercus rubra. 

 Sophora japonica. 

 Tilia americana. 

 Tilia europaea. 

 Ulmus campestria. . 



AA. Evergreen. 

 B. Growth rapid: trees susceptible to 2o° F, 



Acacia decurrens dealbata. Acacia dccurrens mollis. 



BB. Growth somewhat slow: trees hardy. 



Arbutus Menzicsii. 

 Ficufl Carica. 

 Olea europaea. 

 Pinufl Pinea. 



Quercus agrifolia. 

 (Quercus Suber. 

 Schinus Molle. 



5. Orntimerital trees affording but little shade. 

 A. Outline long or nearly columnar. 

 B. Deciduous. 

 PopuJus nigra var. italica. Betula alba. 



Cupressus sempervirens. 

 Cupressus semper\'iren3 var. 

 fastigiata. 



Juniperus communis var. hi* 



bernica. 

 Taxus baccata var. fastigiata. 



AA. Outline conical or spiral, usually pointed. 



B. Coniferse, ivith mostly narrow leaves. 



c. Deciduous: hardy. 



Larix decidua. 

 Larix leptolepis. 



Taxoriium distichum. 

 Taxodium mucronatum. 



CC. Evergreen. 

 D. Susceptible to severe frost {about 20° 



F.). 



Agathia robusta. 

 Araucaria BidwiUii. 

 Araucaria braziliana. 

 Araucaria Cookii. 



Abies balaamea. 



Abies ccphalonica. 



Abies concolor. 



Abies nobilis. 



Abies Nordmanniana. 



Abies Pinsapo. 



Cedrus atlantica. 



Cedrus Deodara. 



Cedrus Libani. 



Cephalotaxus drupacea. 



Cephalotaxus Fortunei. 



ChamEecyparis Lawsoniana. 



Cryptomeria japonica. 



Cryptomeria japonica var. 



elegans. 

 Cunninghamia sinensis. 

 Cupressus Goveniana. 

 Cupressus macrocarpa. 

 Cupressus guadalupensia. 

 Libocedrxis chilensis. 

 Libocedrus decurrens. 

 Picea ajanensis. 

 Picea canadensis. 

 Picea Engetmannii. 



Araucaria Cunninghamii. 

 Araucaria excelsa. 

 Araucaria irabricata. 

 Pinus canariensis. 



Hardy. 



Picea excelsa. 



Picea mariana var. Doumetti. 



Picea torano. 



Picea pungens. 



Pinuti contorta. 



Pinus Coulteri. 



Pinus densiflora. 



Pinus Laricio var. austriaca. 



Pinus monophylla. 



Pinus Pinaster. 



Pinus radiata. 



Pinus Sabiniana. 



Pinus sylvestris. 



Podocarpus Totara. 



Pseudotsuga Douglasii. 



Sciadopitys verticillata. 



Sequoia giganlea. 



Sequoia sempervirens, 



Taxus baccata. 



Thuja gigantea. 



Thuja orientalis. 



Thujopsis dolabrata. 



Torreya californica. 



Torreya nucifera. 



BB. Foliage broad. 

 c. Deciduous: hardy. 



Betula alba. 



Betula lenta. 

 Betula lutea. 

 Betula papyracea. 

 Betula populifolia. 



Ginkgo biloba. 

 Quercus Cerris. 

 Quercus nigra. 

 Sorbus Aucuparia. 



CC. Evergreen. 



D. Susceptible to severe frost {probably 20° F. and 



even less). 



Cinnamomum Camphora. 

 Ci>n,'noc;irpus la;vigatus. 

 Cryptocarya Miersii. 



Grevillea robusta. 

 Sterculia diversifolia. 

 Tristania conferta. 



DD. Hardy. 



Acacia melanoxylon. 

 Ccrasus lusitanica. 

 Ilex Afjuifolium. 

 Lagunaria Patersonii. 



Laurus nobilis. 

 Pittosporum crassifolium. 

 Quercus Suber. 

 Umbellularia californica. 



AAA. Outline more or less rounded, but trees not as wide- 

 spreading nor as shade-giving as in Class 4- 



B. Deciduous. 

 c. Susceptible to frost {25° F.). 

 Phytolacca dioica. 



CC. Hardy. 



^sculus glabra. 

 Fraxinus americana. 

 Fraxinus excelsior. 

 Fraxinus (Jrnus. 

 Gymnocladus canadensis. 



Juglans californica. 

 Juglans nigra. 

 Koelreuteria paniculata. 

 Paulownia tomentosa. 

 Hobinia Pseudacacia. 



BB. Evergreen. 

 c. Probably susceptible to severe frost {20° F., or less). 



Acacia cyanophylla. Eucal>-ptus ficifolia. 



Aicctryon excelsum. 



Bursaria spinosa. 



Eucalyptus calophylla. 



Eucalyptus cornuta. 



Eucalyptus corymbosa. 



Eucalyptus corynoralyx. 



Eucalyptus globulus. 

 Eucalyptus macuiata var. cit- 



riodora. 

 Eucalyptus robusta. 

 Hymenosporum flavum. 

 Maytenus Boaria. 



