Hill, Johnson and Blaxell, Systematic studies in the eucalypts 
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17. Eucalyptus wubinensis LAS. Johnson & K.D. Hill, sp. nov. 
Affinis E. obtusiflora, distinguitur: habitus 'malleeformis', cortex laevis non glauca; 
fructus parvi (ad 7x6 mm) non costatae. 
Type: Western Australia: 6.8 km E of Rabbit Proof Fence rd along Glamoff rd, SE of 
Wubin, Hill 378, Johnson, Blaxell & Brooker, 26 Oct 1983 (holo NSW; iso CANB, PERTH). 
Mallee to 8 m tall. Bark smooth to base, white or greyish with brown or bronze streaks, 
shedding in long ribbons. Twigs, buds and fruits not glaucous. Juvenile leaves 
disjunct, ovate to orbiculate, petiolate, glaucous, to 7 cm long, 4.5 cm wide. Adult 
leaves disjunct, narrow-lanceolate to lanceolate, acuminate, ± falcate, dull, mid-green 
to grey-green, not glaucous, 5.0-10.0 cm long, 0.8-2.2 cm wide; petioles terete or 
slightly flattened, 0.9-1.8 cm long. Lateral veins distinct, at 30-40° to midrib, 
moderately spaced; intramarginal vein distinct, 0.5-1.0 mm from margin. 
Umbellasters axillary, 7-flowered. Peduncles terete or angular, 6-15 mm long. Pedicels 
terete or angular, 2-5 mm long. Mature buds ovoid, 7-9 mm long, 4-5 mm diam.; 
calyptra hemispherical, weakly striate, Vi as long as hypanthium, distinctly narrower 
than hypanthium at join. Fruits cylindrical to obconical, not ribbed, 4-5-locular, 6-8 mm 
long, 5-7 mm diam. Calyptra scar and stemonophore c. 1 mm wide, raised at c. 45°. 
Disc steeply depressed, 1.5-2.0 mm wide. Valves broadly triangular, obtuse, enclosed. 
Seeds irregular, flattened, shallowly reticulate, glossy deep red brown, c. 2 mm long; 
hilum ventral. Chaff similar, angular, smaller (Fig. 23). 
Fig. 23. E. wubinensis. a, adult leaf, inflorescence and buds; b, inflorescence and buds, 
c, inflorescence and fruits, (a, b from Hill 378, c from Brooker 8303). Scale bar = 1 cm. 
