No. 39. 
Eucalyptus tereticornis, Sm. 
The Forest Red Gum. 
(Natural Order MYRTACE^E.) 
Botanical description. —Genus, Eucalyptus, see p. 33, Part II. 
Botanical description. —Species, E. tereticornis , Sm. A tall tree, with a smooth, 
whitish or ash-coloured hark, shedding in thin layers.—(P. Mueller and others.) 
Leaves. —Lanceolate, mostly falcate and acuminate, often exceeding 6 inches long, the veins 
rather regular and numerous, and oblique as in E. rostrata, but often rather coarser, the 
intramarginal one rather distant from the edge. 
Peduncles .—Axillary or lateral, not very short, terete or angular, the upper ones sometimes 
forming a short panicle, each bearing about four to eight flowers on pedicels of 1 to 3 lines. 
Calyx tube. —Turbinate, 2 to nearly 3 lines diameter. 
Operculum .—Conical acuminate, usually about \ inch long, always much longer than the calyx- 
tube and usually broader, of a rather thin texture and smooth. 
Stamens .—Often | inch long, more or less inflected in the bud, but sometimes only very shortly 
so at the ends ; anthers small, ovate, with parallel distinct cells. 
Ovary .—Nearly as long as the calyx-tube, and convex or conical in the centre. 
Fruit .—Obovoid or almost globular, 3 to 4 lines diameter, the rim broad and very prominent, 
the capsule not sunk, the valves protruding beyond the rim.—(B.F1., iii, p. 241.) 
Botanical Name. — Eucalyptus , already explained, Part II, p. 34; tereti¬ 
cornis, Latin— teres, teretis, long and round, taper as a tree or pillar; cornu, a horn, 
referring to the shape of the operculum. 
Vernacular Names. —“ Porest Red Gum.” This tree is very closely related 
to the Murray Red Gum, which is always found near watercourses or on alluvial 
country. The species is, with important exceptions indicated, usually found in open 
forest country, hence I recommend the adoption of the prefix “ Porest ” to Red 
Gum, the name by which it is very commonly known, with the view to save 
confusion. It sometimes also goes under the names of Blue and Grey Gum, and 
even others, but these names are best reserved for other trees. 
