NOTES ON EUCALYPTUS. 65 



Affinities. 



1. WithE. oligantha Sehauer. Its closest affinity appears 

 to be with this species, but E. oligantha has paler foliage, 

 urceolate calyx-tube, which does not continuously taper 

 into the pedicel, much shorter filaments, and capitate 

 stigmas. The anthers of the two species are similar, but 

 not identical; E. oligantha is described as shrubby (but 

 later it may prove to attain tree size), but we know nothing 

 of its bark and timber. The fruits of neither species are 

 known. 



2. With E. Spenceriana Maiden. Asa rule this species 

 has thin, graceful, lanceolate leaves, but occasionally it 

 has coarser foliage, e.g. the Stapleton, Northern Territory 

 plant shown at fig. 4, Plate 156, O.R. But even in that tree, 

 which presents a good deal of similarity to a tree of E. 

 Hillii, the foliage is not broad as a whole. Also, the bark 

 of E. Spenceriana is not tessellated; it is a Box. The 

 fruit of E. Spenceriana is small and of papery or angophoroid 

 texture, which that of E. Hillii can never be. 



3. With E. alba Reinw. A large leaved, long petiolate 

 species suggesting a similarity to E. alba. For that species 

 Plates 105 - 7, O.R., may be referred to. But E. alba differs 

 in buds and anthers, and in developing into lanceolate 

 leaved forms. 



E. APPROXIMANS n. Sp. 



Frutex Mallee similis 4 — 10' altus magna multitudine crescens. 

 Foliis teneribus lineari-lanceolatis, foliis maturis lineari-lanceolatis 

 rectis vel leniter falcatis, acuminatis 7 '5 cm.- 1 dm. longis, 6- 

 7 mm. latis, crassis, nitentibus, costa media sola conspicua, mar- 

 ginibus uniformiter glandulosis, glandulis oleosis dense punctatis. 

 Pedunculis circiter -5 cm. longis, 4-8 flores breve pedicellatos 

 ferentibus. Alabastris clavatis, operculo hemispherico-conoideo 

 calycis tubo dimidio sequilongo. Antheris reniformibus. Fructibus 

 cylindroideis circiter 5 mm. diametro, capsula valde emersa. 



E— June 2, 1919. 



