220 AUSTRALIAN NATIVE PLANTS. 
33- Pittosporum phillyreoides, DC., N.O., Pittosporez, B.FI., i., 
113, 
Variously called ‘‘ Butter Bush,” ‘‘ Native Willow,” and ‘‘ Poison-berry 
Tree.” (For the numerous botanical synonyms, see “ Timbers.”) 
This tree is said to yield a gum somewhat similar to gum 
arabic, and even superior to it. (See P. undulatum, “ Resins.”) 
All the colonies except Tasmania. 
34. Semecarpus Anacardium, Zzxz., (Syn. S. australasicus, 
Engl.); N.O., Anacardiace, B.FI., i., 491. 
“ Marking-nut Tree” (of India). 
In India a brown, nearly insipid gum, exudes from the stem. 
Queensland and Northern Australia. 
35. Stenocarpus salignus, #.27., N.O., Proteacez, B.FI., v., 539. 
“Silver Oak.” (For botanical synonyms and vernacular names, 
see ‘‘ Timbers.’’) 
Small quantities of gum may occasionally be seen on bruised 
trees of this species. 
New South Wales and Queensland. 
36. Sterculia acerifolia, 4. Cunn., (Syn. Brachychiton acerifol- 
tum, F.v.M.); N.O., Sterculiacee, B.Fl., i., 229. Brachy- 
chiton acerifolium in Muell. Cens., p. 15. 
‘‘Flame Tree.” Lace-bark Tree.” 
A gummy substance exudes from the trunk of this tree. It 
looks most like Tragacanth of any of the well-known gums. The 
same remark is more or less true of other species of Sterculia. 
New South Wales and Queensland. 
37. Sterculia diversifolia, (Syn. Pecilodermis populnea, Schott. ; 
Brachychiton populneum, R.Br., in Muell. Cens.); N.O., 
Sterculiaceze. 
“Kurrajong.” (For other vernacular names, see ‘‘ Timbers.’’) 
This tree sometimes yields the tragacanthoid substance already 
alluded to rather abundantly. Mr. Bauerlen informs the author 
that at the foot of a tree about one foot in diameter and thirty feet 
high, in the Clyde River district of New South Wales, about a 
