410 
Telopea 9(2): 2001 
Notes: E. boliviano is nearest to E. williamsiana L.A.S. Johnson & K.D. Hill, from which 
it is readily distinguished by the 4-winged, glaucous stems, the shorter buds and fruits 
and the thicker peduncles, the usually 4-valved fruits with a medial flange, tire flowers 
with yellow stamens, the longer, flattened, twisted petioles and the dull more-or-less 
glaucous juvenile leaves (Table 1). E. boliviano is also frequently a nrallee or shrub. 
Table 1. Comparison of E. boliviana and E. williamsiana. 
E. boliviana 
E. williamsiana 
Habit 
mallee to 5 m tall or tree to 12 m 
tree to 20 m tall 
Branchlets 
strongly winged, glaucous 
weakly ridged, not glaucous 
Juvenile leaves (cm) 
elliptical 
ovate to orbicular 
8-11 x 3-6 
15x13 
Petioles (cm) 
2-3 
to 1.3 
Adult leaves (cm) 
broad-lanceolate 
broad-lanceolate 
8-13x2.0-5.0 
8-18 x 1.6-5.0 
Petioles (cm) 
2.0-3.0 
0.9-1.5 
Peduncles (mm) 
4-10 
3-12 
Pedicels (mm) 
0 
0-2 
Buds (mm) 
7-10x6-7 
9-12x6-7 
Fruits (mm) 
7-11 x 9-15 
9-13 x 10-15 
Locules 
usually 4 
usually 3 
E. boliviana and E. williamsiana are placed in Section Renantherae of subgenus 
Monocalyptus (Pryor & Johnson 1970) by the renantherous anthers. Within the section, 
they are placed in Series Capitellatae (the stringybarks - alternatively known as series 
Pachyphloiae Blakely or Pachyphloius Brooker) by the stringy bark and the hispid early 
juvenile leaves. Both taxa are distinguished within that series by the broad, highly 
coriaceous juvenile leaves that become glabrous at an early stage, the sessile, angular 
buds and the closely clustered and more or less sessile fruits. E. boliviana is uniquely 
characterised in this series by the glaucous juvenile leaves, branchlets and buds, and 
the yellow flowers. 
Distribution: known only from a small stand near the crest of the Bolivia Hill in the 
New England region of north-eastern New South Wales (Fig. 2). 
Ecology: locally frequent in one small area at the foot of a low scarp on the upper 
slopes of a steep east-facing ridge (altitude 1200 m), on gritty sandy soils over granite 
(Bolivia Hill Leucoadamellite) and among outcropping boulders. In low dry 
sclerophyll woodland with Eucalyptus prava, Callitris endlicheri, Acacia pycnostachya, 
A. adunca and many shrubs. 
Flowering: September. 
Conservation status: a species of apparently limited distribution and small population 
size, appropriately regarded as potentially vulnerable, code 2V (after Briggs & Leigh 
1996). The total known population is in an area recently purchased for conservation 
reserve purposes by the New South Wales National Parks and Wildlife Service, but the 
full population extent is still unknown and requires further study. 
