Hill, Johnson and Blaxell, Systematic studies in the eucalypts 
275 
and Hopper (1993), and which we also would now regard as quite distinct and 
belonging in a separate series (see Table 1). Brooker (2000) separated £. torquata into a 
separate series on the basis of autapomorphic novelties, ignoring informative 
grouping characters that clearly place it with the taxa here included in the series. 
The following account and classification conclude our revisionary studies of this 
series, except that glaucous forms of £. concinna Maiden & Blakely occurring 
sporadically between Mulline and Mussons Soak require further field investigation. 
A noteworthy circular pattern of intergradation around the Nullarbor Plain is evident 
in this group, starting with £. melanoxylon in the southern Goldfields of Western 
Australia intergrading with £. pleurocorys, running east into E. brachycalyx to the south 
and south-east of the Nullarbor Plain to Eyre Peninsula, then into E. concinna in the 
northern Eyre Peninsula and north-west through the Great Victoria Desert, then into 
E. planipes west of the Nullarbor and into E. griffithsii Maiden in the Western Australian 
Goldfields. 
Table 5. A classification of Series Torquatae 
Series Torquatae 
Subseries Laevosae 
E. laevis 
Subseries Corrugatosae 
E. melanoxylon 
E. brachycalyx 
E. rugosa 
E. pleurocorys 
E. concinna 
E. trachybasis 
E. planipes 
E. griffithsii 
E. corrugata 
Subseries Torquatosae 
E. torquata 
7. Eucalyptus laevis L.A.S. Johnson & K.D. Hill, sp. nov. 
E. melanoxylon affinis sed fructibus laevibus ovoideisque et calyptra breviore 
obtusaque distinguitur. 
Type: Western Australia: 3.3 km W. of highway on track turning off 11 km N. of 
Norseman (32°09'S, 121°39'E), K.D. Hill 587, L.A.S. Johnson, D.F. Blaxell, M.I.H. Brooker 
& S.D. Hopper, 6 Nov 1983 (holo NSW; iso CANB, PERTH). 
[E. species W, Brooker & Kleinig 1990: 343 (1990)] 
Tree to 15 m tall, sometimes mallee. Bark persistent on trunk and base of larger 
branches, grey, shortly fibrous-flaky; smooth, grey, shedding in ribbons above. Juvenile 
leaves not known.Adult leaves disjunct; narrow-lanceolate, acuminate, glossy bright 
green, 6.0-14.0 cm long, 8-15 mm wide; petioles terete or slightly flattened, 7-10 mm 
long; lateral veins at 30-45° to midrib, moderately spaced, ± degenerate; oil glands 
dense and distinct; intramarginal vein 0.5-1.5 mm from margin, ± degenerate. 
Umbellasters axillary, 7-11 flowered; peduncles terete, 9-17 mm long; pedicels terete, 
3-5 mm long. Mature buds ovoid, 6-7 mm long, c. 4 mm diam.; calyptra conical. 
