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16B. Eucalyptus obtusiflora DC. subsp. dongarraensis (Maiden & Blakely) L.A.S. 
Johnson & K.D. Hill, comb, et stat. nov. 
Basionym: Eucalyptus dongarraensis Maiden & Blakely, J. & Proc. Roy. Soc. New South 
Wales 59:184 (1925). 
Type: Western Australia: Dongarra, J.H. Maiden, Oct 1909 (holo NSW; iso CANB, K, 
MEL, PERTH — 2 sheets). 
Mallee. Bark smooth. Peduncles and pedicels thick. Buds and fruits broad, glaucous. 
Calyptra low, hemispherical (Fig. 22d, e, f). 
Distributed from a short distance south of Geraldton south almost to Cliff Head (Fig. 21). 
Locally frequent in dense mallee shrubland on calcareous coastal dunes. 
Conservation status: not at risk. 
Selected specimens (from 9 examined): Western Australia: between Georgina and Greenough, 
Beard 6919, 25 Oct 1973 (PERTH, NSW); Cliff Head turn-off from Highway 1, Blaxell W75/91, 7 Oct 
1975 (NSW); Cliff Head road, W of Brand Highway, Brooker 8404, 23 Jan 1984 (CANB, NSW); 
10 miles [16.1 km] NE from Yuna, Gardner 14263, 20 Dec 1962 (PERTH, NSW); Drovers Cave 
National Park, near Jurien, George 14266, 11 June 1976 (PERTH, NSW); Dongarra, Maiden s.n., Oct 
1909 (NSW 42723, CANB, K, MEL, PERTH). 
16C. Eucalyptus obtusiflora DC. subsp. cowcowensis L.A.S. Johnson & K.D. Hill, 
subsp. nov. 
Inter subspecies E. obtusiflorae distinguitur: habitus 'malleeformis' vel arborescens; 
cortex laevis; nec alabastra nec fructus glauci; pedicelli longi graciles; alabastra 
angusta; calyptra conica, acuta. 
Type: Western Australia: 3.3 miles [5.5 km] W. of Wyalkatchem, G.M. Chippendale 252, 
9 Aug 1967 (holo NSW; iso CANB, PERTH). 
Tall mallee or tree. Bark smooth. Buds and fruits not glaucous. Peduncles long and 
slender. Buds narrow. Calyptra conical, pointed (Fig. 22g, h, i). 
Scattered and sporadic, from near Wongan Hills to Yorkrakine (Fig. 21). 
Conservation status: not at risk. 
The epithet is from the Cowcowing district of Western Australia, where this taxon 
occurs. The syllable 'mg' is deliberately omitted for brevity and euphony. 
Selected specimens (from 13 examined): Western Australia: 4.3 km N of Dowerin on Cadoux 
Road, Brooker 7610, 14 Sep 1982 (CANB, NSW); 3.3 miles [5.1 km] W of Wyalkatchem, Chippendale 
252, 9 Aug 1967 (CANB, NSW); 2 miles [3.2 km] S of Yorkrakine, Chippendale 335, 18 Mar 1968 
(CANB, NSW); 25.3 km from Kondinin on Corrigin road. Hill 2479, Johnson & Blaxell, 15 Nov 1986 
(NSW, PERTH); 38.2 km south of Koorda on Wyalkatchem road. Hill 2921, 27 Aug 1988 (NSW, 
CANB, PERTH); 26.7 km N of Cunderdin on Wyalkatchem rd, Johnson 9114 & Johnson, 18 May 1988 
(NSW, PERTH); Cowcowing, Koch 987, Aug 1904 (NSW); Next to Ninghan location 1716, Smith 643, 
13 Feb 1986 (MEL, NSW). 
Intergrades: E. obtusiflora subsp. cowcowensis subsp. obtusiflora 
Selected specimens (from 6 examined): Western Australia: W slope of Mt O'Brien, NW of Wongan 
Hills, Briggs 8996, 7 Oct 1992 (NSW); track to tower, Wongan Hills, Brooker 8189, 30 June 1983 
(CANB, NSW); 25 km from Piawaning along road to Wongan Hills town, 1 km S of road, Crisp 5486, 
26 Jan 1979 (CANB, NSW, PERTH); Wongan Hills, N slope of Mt O'Brien on track to radio tower, 
Hill 2933, 27 Aug 1988 (NSW). 
