diffuse porous page

DIFFUSE POROUS EUCALYPTS

NOTE: unless otherwise specifically stated, all of the images shown on this
page are of 1/4" square end grain cross sections shown at 12X with the top
of the image towards the bark and the bottom towards the pith so that
earlywood is towards the bottom of the growth rings and latewood is towards the top

to see all species with links to their anatomy page go here: species links

This page includes all of the genus Eucalyptus species for which I have end grain. A few of these grow domestically (although I'm not aware of any of them being native to North America) and a few are as readily designated semi diffuse porous as just diffuse porous but I have kept all the Eucalypts on this page in any case.

General characteristics of Eucalypts end grain

• pores: generally in semi-random distribution, often with pronounced diagonal bands Eucalyptus spp. with (to greater and lesser degrees) diagonal pore bands (NOTE: the diagonal bands are sometimes more obvious at less magnification than what you see here at 10X)
• parenchyma: obvious vasicentric parenchyma
• rays: numerous, always present, very small to invisible at 10X
• growth rings: vague at best, often cannot be distinguished at all

NOTE: this page started out more or less ordered alphabetically
by species name but even that has not been kept up
I'll get it better organized someday.
Probably. Maybe.
Or not.

     

• pink gum / Eucalyptus fasciculosa
• river redgum / Eucalyptus spp. --- these two are from nearby areas of the same sample
• river redgum / Eucalyptus spp. --- these two are from nearby areas of the same sample

     

• river redgum / Eucalyptus spp.
• river redgum / Eucalyptus spp.
• river redgum / Eucalyptus spp.

   

• river redgum / Eucalyptus spp.
• river redgum / Eucalyptus spp.

   

• forest redgum / Eucalyptus tereticornis
• forest redgum / Eucalyptus tereticornis

   

• eucalyptus / Eucalyptus spp.
• eucalyptus / Eucalyptus spp.

   

• bull mallee / Eucalyptus behriana --- a somewhat atypical pore pattern for a Eucalypt
• river redgum / Eucalyptus camaldulensis

   
These two pics are of the same sample and taken about 1" apart. The first one is typical of the piece. The second one shows an area of unusually sparse pores and is not at all typical of the species, but since it did occur I have included it.

• river redgum / Eucalyptus camaldulensis
• river redgum / Eucalyptus camaldulensis

     

• prickly stringybark / Eucalyptus consideniana
• white gum / Eucalyptus dalrympleana
• alpine ash / Eucalyptus delegatensis

   

• rose gum eucalyptus / Eucalyptus grandis
• rose gum eucalyptus / Eucalyptus grandis

     

• brown gum / Eucalyptus deanei
• Tasmanian oak / Eucalyptus spp.
• collibah / Eucalyptus intertexta

     

• gympie messmate / Eucalyptus cloeziana --- these two are from nearby areas of the same sample
• gympie messmate / Eucalyptus cloeziana --- these two are from nearby areas of the same sample and this one is a 5/12" x 5/12" cross section shown here at 7X
• mindanao gum / Eucalyptus deglupta

       

• lyptus / Eucalyptus grandis x urophylla --- a hybrid
• lyptus / Eucalyptus grandis x urophylla --- a hybrid; this is a 1/3" x 1/3" cross section shown here at 9X
• lyptus / Eucalyptus grandis x urophylla --- a hybrid
• lyptus / Eucalyptus grandis x urophylla --- a hybrid

     
Florida eucalyptus --- more like semi diffuse porous than diffuse porous but I've kept them here with the other Eucalypts

• Florida eucalyptus / Eucalyptus robusta --- both of these are from nearby areas of the same sample and both are 1/4" x 3/8" cross sections shown here at 8X
• Florida eucalyptus / Eucalyptus robusta --- both of these are from nearby areas of the same sample and both are 1/4" x 3/8" cross sections shown here at 8X
• Florida eucalyptus / Eucalyptus robusta

     

   

• Tasmanian blue gum / Eucalyptus globulus
• Sydney blue gum / Eucalyptus saligna --- these two are from nearby areas of the same sample
• Sydney blue gum / Eucalyptus saligna --- these two are from nearby areas of the same sample and this one is a 1/3" x 1/3" section shown here at 9X


• Sydney blue gum / Eucalyptus saligna --- these two are from nearby areas of the same sample
• Sydney blue gum / Eucalyptus saligna --- these two are from nearby areas of the same sample

   

• jarrah / Eucalyptus marginata
• jarrah / Eucalyptus marginata

     

• karri / Eucalyptus diversicolor
• karri / Eucalyptus diversicolor
• karri / Eucalyptus diversicolor

   

• brittle gum / Eucalyptus mannifera
• tallowood / Eucalyptus microcorys

     
all three of these are from areas on the end grain of the same 3" wide piece

• Queensland ash / Eucalyptus montivaga
• Queensland ash / Eucalyptus montivaga
• Queensland ash / Eucalyptus montivaga

     

• shining gum / Eucalyptus nitens
• messmate stringybark / Eucalyptus obliqua --- based on this end grain, I would not have guessed that this is a eucalypt, but I checked on the NCSU LUNA site and it is
• silver leaved box / Eucalyptus pruinosa

     

• swamp mallet / Eucalyptus spathulata
• Steedman's gum / Eucalyptus steedmanii
• sugar gum / Eucalyptus cladocalyx

   

• white stringybark / Eucalyptus globoidea
• yellow gum / Eucalyptus leucoxylon

     

• brownbarrell / Eucalyptus fastigata
• grey ironbark / Eucaluptus drepanophylla
• red ironbark / Eucaluptus sideroxylon

     

• Thozet's box / Eucalyptus thozetiana
• white gum / Eucalyptus dorrigoensis
• broad leaved kindling bark / Eucalyptus dalrympleana

     

• island bloodwood / Eucalyptus nesophila
• Molloy red box / Eucalyptus leptophleba
• Wilkinson stringybark / Eucalyptus eugenioides

     

• collibah / Eucalyptus microtheca
• gimlet / Eucalyptus salubris
• grey box / Eucalyptus moluccana

     

• / Eucalyptus resinifera
• yellowbox / Eucalyptus melliodora --- these two are from nearby areas of the same sample
• yellowbox / Eucalyptus melliodora --- these two are from nearby areas of the same sample


   
These two are clearly VERY different than other eucalypts. They are two of about 100 Eucalyptus spp. what were broken off into their own new genus of Corymbia because of botanical differences (tree differences) but which apparently also have significantly different fine grain characteristics as well). The designation of Corymbia is contentious, apparently, with some botanists not agreeing with the split so I have listed them here as genus Eucalyptus. There is a lot of obvious confluent parenchyma in these that is not in any of the other eucalypts so it seems likely to me that their being split from the genus Eucalyptus will be seen as correct in the long run. On the other hand, I'm looking at the WOOD and botanists (who do the naming) don't care about the wood characteristics, just the tree characteristics.
• bangalay / Eucalyptus botryoides
• apple topped box / Eucalyptus angophoroides