82 



DESCRIPTION. 



CLXX. E. Dundasi Maiden. 



In Proc. Royal Soc, N.S.W., xlix, 309 (1915). 



Arbor silvas formans, " Blackbutt " vocata. Foliis pedunculatis, angusto-lanceolatis, acurninatis, 

 plerumque apice falcata, nitentibus, coriaceis, venis obscuris. Petioliis 1 - 1-5 cm. longis, foliis 8-9 cm., 

 minus 1 cm. latis. Alabastris perfecte apertis dod visis, sessilibis vel pedicello brevissimo, petiolo communi 

 paullo piano et circa 1 cm. longo. Cupula circa -5 cm. longa, gracile, in apicem angustata. Operculo 

 acuminato, conico et dimidio cupulas sequilongo. Antheiis paralle liter aperientibus, dorso glandula magna 

 juxta apicem. Fructibus cylindroideis, medio paullo const rictis, •! cm. longis et circa -4 cm. latis orificio. 

 Valvarum apicibus non super orificium. 



This is a tree of which Dr. L. Diels gave me a few leaves, buds and fruits (all 

 entirely glabrous), in the year 1901, together with the following particulars. It is his 

 No. 5454, and is " a tall tree forming forests " in the neighbourhood of Dundas, W.A., 

 where it goes under the name of " Blackbutt." 



Dr. L. Diels and Pritzel speak of their No. 5454 in terms of which the following 

 is a translation : — 



" We observed a very similar tree-like form (to E. gracilis F.v.M.) about 50 kilometres from Esper- 

 ance Bay towards the north. It is a tree about 25 metres high, with a dark tessellated bark, called Black- 

 butt by the colonists, forming open forests in gravelly muddy country (D. 5454 in Berlin Herbarium). The 

 tree next to our species is one from Eastern Australia mentioned by Mueller in Dec. iii of the ' Eucalypto- 

 graphia' from the Mackenzie Eiver, Queensland."' (This is E. Thozetiana F.v.M. — J. H. M.) (Engler's 

 Jahrbuch xxxv, 438, 1905.) 



I may say that the name of " Blackbutt " is, in Western Australia, usually 

 applied to E. patens, Benth, of the well-watered south-west, but, in the later settled 

 arid goldfields area, the name is given more or less loosely to several (perhaps many) 

 species, as it is a common character of trees of that region to have somewhat smooth 

 trunks, with more or less dark, flaky bark on the butt, and these are called " Black- 

 butts." 



The Dundas specimens may be described as follows : — 



Juvenile leaves not available., 



Mature leaves. — Only eleven leaves were received. They are pedunculate, narrow-lanceolate, 

 acuminate, usually with a hooked tip, shiny, equally green on both sides, moderately rich in oil, venation 

 scarcely visible, margin thickened, midrib the only obvious vein, lateral veins roughly parallel and acutely 

 attached to the midrib. Petioles 1-1-5 cm., length of leaves 8-9 cm., breadth under 1 cm. 



Flowers. — Buds not fully developed are alone available. Brownish-black in colour, sessile or 

 with a very short pedicel, the common petiole slightly flattened and about 1 cm. long. The calyx-tube 

 about -5 cm. long, slender, and tapering very gradually ; the operculum pointed, conical, and about half 

 the length of the calyx-tube. The anthers are immature, but they open in parallel slits and have a large 

 gland at the back near the top. 



