Eucalyptus. 677 
very few in each cell perfect, usually ovoid or flattened and ovate 
when solitary, variously shaped and angular when more than one 
ripen; testa black, dark coloured, or rarely pale, smooth or granular, 
not hard, in a few species expanded into a variously-shaped wing; 
hilum ventral or lateral. Embryo with broad cordate 2-lobed or 
bipartite cotyledons, folded over the straight radicle but otherwise 
flat. — Shrubs or trees, attaining sometimes a gigantic size, secreting 
more or less of resinous gums, whence their common appellation 
of Gum-trees. Leaves in the young saplings of many species, and 
perhaps all in some species, horizontal, opposite, sessile, and cordate, 
in the adult shrub or tree of most species vertical (or sometimes 
horizontal), alternate, petiolate and passing more or less from broadly 
ovate to lanceolate acuminate and falcate, always rigid whether 
thick or thin, penniveined, the midrib conspicuous; the primary veins 
often scarcely perceptible when the leaves are thick; in some species 
few, irregular, oblique, and anastomosing and passing through every 
gradation from that to numerous parallel diverging or transverse 
veins, always converging into an intramarginal vein, either close to 
or more or less distant from the edge, the intermediate reticulate 
veinlets rarely very prominent, and scarcely any when the primary 
veins are closely parallel. Flowers large or small, in umbels or 
heads, usually pedunculate, rarely reduced to a single sessile flower, 
the peduncles in most species solitary and axillary or lateral (by 
the abortion of the floral leaves) either at the base of the year’s 
shoot below the leaves or at the end of the older shoot above them. 
Bracts and bracteoles when present so early deciduous as only to 
have been observed in a very few species. 
With the exception of two species extending to Timor, and two or. 
three or perhaps one single somewhat doubtful species from the Indian 
Archipelago, the Eucalypti are all Australian, and constitute a large portion 
of the forest vegetation. 
966. Eucalyptus robustus Sm. in Bot. Noy. Holl. (1793), p. 40 
tab. 13. — Aschers.-Schweinf. Ill. Flor. d’Eg., p. 74. — A moderate- 
sized tree, with a rough furrowed bark. Leaves ovate-lanceolate, 
nearly straight or the upper ones narrower and falcate, 8—10 cm 
long or sometimes more, with numerous fine but prominent parallel 
veins almost transverse, the intramarginal one very near or close to 
the edge. Peduneles axillary or lateral, stout, angular or flattened, 
often 2 cm long, each with about 4—-12 rather large flowers, on 
thick angular pedicels. Calyx-tube narrow-turbinate or slightly 
urceolate, 6—8 mm long, tapering into the pedicel. Operculum 
thick, obtusely acuminate, usually rather longer than the calyx-tube. 
Stamens 8—16 mm long, all fertile, inflexed in the bud, somewhat 
