312 



(2) In the wide tracts of intra-tropical Australia E. terminalis with its varieties occurs even far 

 inland, thus at the Barcoo (Dr. Wuth) and at Lady Charlotte's Water (E. Giles) (E. pyrophora Benth.), 

 in such hot and arid regions, as are climatically vastly different from the cool forest-ravines of the south- 

 east coast [this can only refer to typical E. corymlosa. — J.H.M.] ; hence gradually the leaves become paler, 

 nearly or fully as much on the upper surface as beneath, their position gets more vertical and therewith 

 stornata occur also on the upper page, the panicles also assume often a paler hue, the flowers and fruits 

 generally are smaller, the latter becomes less woody and somewhat more slender, and often lose the 

 outward curvature towards the rim ; but the fertile seeds of E. terminalis are as a rule provided with a 

 terminal membianous appendage of about the length of the kernel, a characteristic hardly ever occurring 

 in the typical E. corymbosa 



An extraordinary variability is atao evinced b/ E. terminalis as regards not only the size of its 

 calyx, but also the manner of its dehiscence, a lega'ar sutural line being sometimes not traceable, 

 necessitating an irregular defraction of the opercula summit ; the "lid moreover verges sometimes to a 

 flattened form with an almost obliterated apex, or the lid may be quite turgid and its apex very 

 prominent. (" Eucalyptographia," under E. corymbosa.) 



He states that the seeds of E. terminalis are, " as a rule," winged, while this 

 " hardly ever " occurs in E. corymbosa. I am dealing with the seeds separately. He 

 also refers to the tearing of the operculum in E. terminalis. I shall deal separately 

 with this character in the Corymbosse. 



Mueller (." Eucalyptographia/' under E. corymbosa) speaks of the suggestion 

 that E. terminalis might be a synonym of E. corymbosa, as "almost confirmed." 

 Luehmann found it impossible to draw a clear line of demarcation between them. 

 (Proc. Aust. Assoc. Adv. Science, vii, 526.) Yet, as has already been stated, Mueller 

 recorded the name E. terminalis in his Census. 



The differences between the two species may be stated as follows. (Compare 

 Plates 160, 161 for E. corymbosa, and Plates 164, 165 in the present Part.) 



E. corymbosa. 



E. terminalis. 



Branches erect, robust, reddish, and usually 



angular. 

 Juvenile leaves. — Ovate, glabrous or nearly so 



Mature leaves. — Broadly-lanceolate, acuminate, or 



ending in a long point. Broader than E. ter- 

 minalis. 



Buds. — Glabrous 



Operculum. — Acute, sometimes the point very long 



Fruits. — Broadly urceolate to broadly ovoid, the 



smaller forms globose urceolate. 

 Seeds. — Angular or with small wings 



Slender, terete and for the most part pendulous, 

 dull or pale coloured as well as the leaves. 



Similar in shape, perhaps thinner, and more 

 hairy as far as seen. 



Linear-lanceolate to narrow-lanceolate, acute or 

 shortly acuminate. 



Scurfy. 



Blunt. Usually tears on being removed from the 



calyx-tube. 

 Pale-coloured, narrow oblong truncate, sometime! 



oblong urceolate, \ to above 1 inch long. 

 Flattish, with long wings. 



2. With E. pyrophora Benth. See page 325. 



3. With E. dichromophloia F.v.M. See page 319. 



