EUCALYPTUS 



EUCALYPTUS 



553 



jj. Calyx-tube and lid smooth. 



19. mellioddra, Cunn. HONEY-SCENTED GUM. Spread- 

 ing tree, 120 ft. high: bark more or less persistent be- 

 low, roughish, brownish gray without, yellowish within: 

 fls. small: lid conic-hemispherical: outer stamens ster- 

 ile ; anthers minute, truncated, opening by terminal 

 pores : fr. truncate-globular, not exceeding % in. in 

 diam., mostly 4-celled. Feb.-Apr. F.v.M. Eucal. 2:5. 

 Timber used by wheelwrights and ship-builders ; 

 makes excellent fuel : fls. particularly rich in nectar, 

 and much sought by bees. 



AA. Fruit-valves either quite exserted or the points 

 reaching the level of the rim. (Fruit must be 

 fully mature in order to render this point de- 

 terminable.) 



B. Fls. generally panicled : anthers renate-cordate, 

 opening by longitudinal slits: Ivs. of equal color 

 on both sides. 



c. Lvs. opposite, more or less ovate. 



20. melanophldia, F. v. M. SILVER-LEAVED IRONBARK. 

 Small tree: bark persistent, deeply furrowed, blackish: 

 Ivs. glaucous or mealy white, sessile, from cordate- 

 ovate or orbicular to ovate-lanceolate, obtuse or acute: 

 peduncles 3- to 8-flowered : anthers very small and 

 globular; cells parallel and distinct: fr. truncate-globu- 

 lar, 2 or 3 lines long. 



cc. Lvs. scattered, lanceolate. 



21. siderophloia, Benth. LARGE-LEAVED IRONBARK. 

 Tree, 150 ft. high : bark wholly persistent, deeply and 

 somewhat anastomosingly furrowed; furrows yellowish 

 or dark brown: Ivs. elongated: lid conical, very acute, 

 about 3 lines long : outer filaments straight in bud ; an- 

 thers very minute, roundish ; stigma not dilated. 

 October. F.v.M. Eucal. 4:8. Timber very strong, hard 

 and durable; used for railroad ties, wharf piles, spokes 

 and tool-handles. 



22. drepanophylla, F. v. M. Low, stunted tree : bark 

 ribbed, dark gray: Ivs. thin, often over 6 in. long; 

 veins fine, numerous, parallel and very diverging: um- 

 bels 3- to 6-flowered: fls. large; calyx-lid about as long 

 as the tube (not exceeding 2 lines long) : fr. 3 to 4 

 lines in diameter; valves level with or hardly project- 

 ing beyond the rim. Said to be near E. crebra, differing 

 mainly in the large flowers and in the larger, harder 

 and more globular fruit. 



Var. leptophleba, Luehm. (fi. leptophleba, F. v. M.), 

 is said to be chiefly distinguished by the Ivs. being 

 thicker and the veins more oblique. Timber strong, 

 hard and very durable ; used for bridges, mine props 

 and fence posts. 



23. crebra, F. v. M. NARROW-LEAVED IRONBARK. Tall 

 tree: bark persistent throughout, dark, almost blackish, 

 ridged and deeply furrowed, solid: Ivs. narrow, linear- 

 lanceolate, thin : lid semiovate-conical, not exceeding 

 2 lines long: filaments inflexed in bud; stigma dilated: 

 fruit- valves level with or hardly projecting beyond the 

 rim, not exceeding 2 lines in diameter. F. v. M. Eucal. 

 5:3. Timber heavy, hard, elastic and durable; used for 

 railroad ties, piles', fence posts, and in the construction 

 of bridges and wagons ; also suitable for splitting into 

 palings. 



BB. Fls. mostly in simple axillary umbels: fruits not 



exceeding 1 in. in diam. 



c. Lvs. paler beneath. 



D. Calyptra lid broader than the calyx-tube. 



24. robusta, Smith. SWAMP-MAHOGANY GUM. Fig. 

 784. Handsome, symmetrically 



branching tree, 100 ft. high : 

 bark of trunk persistent, 

 rough, dark brown; of the 

 branches reddish : Ivs. large, 

 oval-lanceolate, long-pointed, dark 

 green, coriaceous ; the veins al- 

 most horizontally spreading : 

 peduncles broadly flattened: fls. 

 large, creamy white ; calyx pale ; 

 lid hemispherical below, cylin- 

 dric-conical pointed above ; an- 

 thers oblong - oval, opening by 784. Fruit and buds of 

 parallel longitudinal slits. Fine E. robusta (X%). 



avenue tree ; profuse bloomer, especially valuable for 

 bees. Dec. -Feb. F.v.M. Eucal. 7: 8. -Timber remark- 

 ably durable ; used for ship-building, wheelwrights' 

 work, mallets, etc. : seems to thrive well in low, sou.r, 

 swampy ground near the seacoast. 



DD. Calyptra lid not broader than the calyx-tube. 

 E. Fruit Yz in. or more in diameter. 



25. marginata, Smith. JARRAH. Tall tree : barkpersist- 

 ent, somewhat fibrous : leaf -veins spreading: lid conical: 

 stamens all fertile, the outer not inflexed in the bud ; 

 anthers cordate-kidney-shaped, opening by divergent 

 longitudinal slits: fr.-valves very short, scarcely or not 

 at all exserted. Apl., May. F. v. M. Eucal. 7:5. Valu- 

 able hardwood tree, requiring a warm climate : timber 

 not attacked by teredo ; used for wharf piles, under- 

 ground work, telegraph poles, railroad ties, floorings, 

 rafters, shingles and furniture ; it is easily worked, 

 makes a fine finish, takes a good polish ; used in Eng- 

 land for street paving. 



EE. Fruit under % in. in diameter. 



F. Length of lid usually twice or thrice that of the 



calyx tube. 



26. resinifera, Smith. KINO EUCALYPT. Tall tree: 

 bark of trunk persistent, rough, of branches deciduous: 

 leaf -veins pinnately spreading : oil-dots pellucid, more 

 or less obliterated: lid conical : stamens all fertile, in- 

 flexed in the bud ; anthers longer than broad, opening 

 by parallel longitudinal slits. F.v.M. Eucal. 1:9. 

 Timber valued for its strength and durability; particu- 

 larly good for fuel; used in Sydney for street paving. 



TF. Length of lid shorter than or equaling that of the 

 calyx-tube. 



G. Foliage much paler beneath: lateral veins numer- 

 ous, very spreading. 



2?. saligna, Smith. Tall tree: bark gray and smooth t 

 leaf -veins feathery-spreading : oil-dots numerous but 

 much concealed: peduncles broadly compressed; pedi- 

 cels very short or none : lid hemispherical, short 

 pointed: stamens all fertile; anthers longer than broad, 

 opening by parallel longitudinal slits. Nov. F.v.M. 

 Eu3al. 2:8. Said to be hardier than JS.Globulus ; pre- 

 fers rich, alluvial soil. 



28. microcdrys, F.v.M. TALLOW-WOOD GUM. Tall tree: 

 bark persistent throughout, wrinkled: Ivs. thin, of al- 

 most papery consistence, copiously dotted with pellucid 

 oil-glands, paler and opaque beneath; veins spreading: 

 pedicels elongated, club-shaped, almost continuous with 

 the calyx tube : lid depressed-hemispherical, hardly 

 jointed : anthers very minute, almost heart-shaped, 

 opening by divergent slits. F.v.M. Eucal. 2:6. Timber 

 hard, durable, easily worked ; used preferably for 

 wood bricks; also for railroad ties, knees and breast^ 

 hooks in ship-building, and telegraph poles. 



GG. Foliage slightly paler beneath, the lateral veins not 

 very close and moderately spreading. 



H. Fruit broadest at the orifice: fertile seeds much 

 larger than the sterile ones: stamens all fertile: 

 anthers longer than broad, opening by parallel 

 longitudinal slits. 



29. punctata, DC. LEATHER-JACKET. HICKORY GUM. 

 Beautiful spreading tree, 100 ft. or more high: bark 

 smooth and dark, thick, most of the outer deciduous: 

 Ivs. thin ; veins divergently spreading : peduncles 

 broad, strongly compressed: pedicels angular, thick: 

 lid bluntly conical. F.v.M. Eucal. 6:7. Timber hard, 

 tough and very durable, suitable for fence posts, rail- 

 road ties, wheelwrights' and ship-builders' work. 



HH. Fruit contracted at the orifice: fertile seeds not 

 much larger than the sterile ones: stamens all 

 fertile : anthers kidney -shaped, opening by di- 

 vergent longitudinal slits. 



30. pilularis, Smith. BLACKBUTT. Tree, 300 ft. or less 

 high: bark of trunk persistent, blackish gray outside, 

 somewhat fibrous and brownish inside; of branches 

 smooth, gray or whitish: Ivs. rather less shining below 

 than above : peduncles strongly compressed : lid attenu- 



