74 TASMANIAN TIMBERS. 



equal-sided, and about 2 to 3 inclies long in sub-Alpine situations, 

 but gradually becoming even linear and 6 to 9 inches long at a 

 lower elevation. Flowers three together, in axillary 

 umbels, the stalks and common stalks long. Operculum 

 from very short and nearly fiat to hemispheric and umbonate 

 (centrally projecting) ; according to elevation. Calyx in 

 sub-Alpine plant narrow ovate, and much constricted 

 below the rim, about i inch long. Fruit similar in shape, 

 but about i inch long; the capsule much sunk. In lowlpnd 

 forms the fruit is sub-globose, and about ^ inch long, with the 

 capsule slightly sunk ; anther-cells parallel. 



Eucalyptus acervula {Hooker, not of Sieber). — A medium-sized 

 tree, with a strong tendency to branch, close to E. gunnii, and 

 combined with it by von Mueller and some Continental botanists. 

 Bark smooth above, coarsely scaly below. Leaves broadly 

 oblong, thin, and rather shining, often undulated, equal or 

 nearly equal sided, 2 to 4 inches long. Flowers many, in axillary 

 umbels. Operculum hemispheric, with a well-developed apex. 

 Calyx 2 to 3 lines diameter, hemispheric; anther-cells parallel. 

 Fruit obconic, 3 to 4 lines diameter; capsule slightly sunk. 



Eucalyptus risdoni (Hooker.) — A small to medium-sized tree, 

 with a branching, often drooping, tendency. Leaves in the 

 typical form apposite and connate, but often, without reference to 

 size or locality, becoming, except where -very young, alternate, 

 stalked, oblique, narrow, ovate-lanceolate, few and obscurely 

 veined, 2 to 6 inches long. Flowers many, in axillary umbels. 

 Operculum very short, nearly flat, and rough. Calyx about 3 

 lines diameter, hemispheric ; anther-cells diverging. Fruit 

 hemispheric, or sometimes pear-shaped, about 4 lines diameter; 

 capsule hardly or not at all sunk. Closely allied to E. amygda- 

 lina (Lahillardiere), and combined with it by von Miieller. 



This completes the list of Eucalypts that attain size enough to 

 vield timber. 



LOCAL NAMES AND GENERAL APPEARANCE OF 

 GUM TREES. 



Local Names. 



Blue-gum. — E. globulus (LabiUardierc'^. 



White-gum. — E. viminalis (Labi'ilardiere). — This is also called 



Manna-gum and Swamp-gum. 

 Weefing-i^um. — E. coriacea (A. Cunningham). 

 Iron-babk. — E. sieberiana (F. v. Miieller). 

 Gum-topped Stringy. — E. hcemastomo, (Smith). Also called 



White-topped Stringy, 

 Stringy-bark. — E. obliqua (L'HeriUer). 



Swamp-gum. — E. regnans (F. v. Miieller). Also known as Moun- 

 tain Ash, Gum-topped Stringy, Peppermint-topped Stringy, 



&c. 

 Black Peppermint. — E. amygdalina (Labillardiere). This 



usually includes all Peppermints with stringy-bark. 

 White Peppermint. — E. linearis (Dehnhart). Peppermints with 



narrow leaves and smooth white bark, the persistent portion 



at the base scalv. 



