25 



fruiting bodies to this Office. The specimens will be identified and all available 

 information regarding their life history and the extent of damage they are capable 

 of doing will be supplied. 



Silvical Data on File 



The section of Compilation has now on file silvical data on 180 species, including 

 practically all the western forest trees and many of the chaparral species. The fol- 

 lowing species have been added to the lists printed in the February and March num- 

 bers of the Field Program: 



CONIFERS. 



Tamarack (Lari.c laridna). 

 Weeping spruce (Picea breu-eriana) . 

 Black spruce (Picea mariana). 

 White spruce (Picea canadensix). 

 Bigcone spruce (Pseudotsuga macrocarpa) 

 Bristle-cone fir (Abies venusta). 

 Redwood (Sequoia sempervirens) . 



Monterey cypress ( Oupressus macrocarpa ) . 

 Gowen cypress (Cupressus goveniana). 

 Pygmy cypress ( Cupressus pygw<m}. 

 MacNab cypress (Cupressus macnabiana) . 

 Dwarf juniper (Juniperus communis). 

 Utah juniper ( Juniperus utahensis). 



HARDWOODS. 



Fanleaf palm (Neovxtshingtonia filamen- 

 tosa). 



Joshua-tree ( Yucca arborescens) . 



Mohave yucca ( Yucca mohavensis). 



California walnut (Juglans calif ornica) . 



California wax myrtle (Myrica calif or- 

 nica } . 



Black willow (Salic nigra) . 



Smoothleaf willow (Salix Unigala). 



Western black willow (Salix lasiandra). 



Lyail willow (Salix lasiandra lyallii). 



Longleaf willow (Salix fluviatilis} . 



Silverleaf willow (Salix sessilifolia). 



Bigelovv willow (Salix lasiolepis). 



Nuttall willow (Salix nuttallii). 



Hooker willow (Salix hookeriana). 



Silky willow (Salix sitchensis) . 



Fremont' cotton wood (Populusfremontii). 



Western birch (Betula occidentalis). 



(Betula kenaica) . 



( Betula alaskana ) . 



White alder (Alnus rhombifolia) . 



Paperleaf alder (Alnus tenui/olia). 



Red alder (Alnus oregona}. 



Sitka alder (Alnus sitchensis) i 



Ooldenleaf chinquapin ( Castanopzis chry- 

 sophylla) . 



California white oak (Quercus lobata). 



Shin oak (Quercus breiueri). 



Pacific post oak (Quercus garryana}. 



California rock oak (Quercus douglasii}. 



Engelmann oak (Quercus engelmanni). 



California scrub oak (Quercus dumosa). 



Canyon live oak (Quercus chrysolepis) . 



California live oak (Quercus agri/olia). 



Highland oak (Quercus uislizeni). 



Morehus oak (Quercus morehus). 



( Quercus tomentella. ) 



(Quercus pricei. ) 



Hackberry (Celtis occidentalis}. 



Palo bianco (Celtis occidentalis reticulata). 



California laurel ( Umbellularia califor- 



nica}. 

 Santa Cruz iron wood (LyonothamnusJJori- 



bundus). 



California sycamore (Platanus racemosa}. 

 Oregon crab (Malus rivularis). 

 Western serviceberry (Amelanchier alni- 



folia) . 



Black haw ( Cratxgus douglasii) . 

 Christmas berry (Heteromeles arbutifolia) . 

 Pacific plum (Prunus subcordata). 

 Bitter cherry (Prunus emarginata). 

 Western choke cherry (Prunus demissa), 

 Holly leaf cherry (Primus Hid folia,) . 

 Entire-leaf cherry (Prunus ilicifolia in- 



tegrifolia). 



Screwbean (Prosopis odorata). 

 Mesquite (Prosopis juli flora}. 

 Western red bud (Cercis occidentalis). 

 Devils claw (Acacia greggii). 

 Horse-bean (Parkinsonia aculeata). 

 Small-leaf horse-bean (Parkinsonia micro- 



phylla). 



