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19. Eucalyptus infracorticata L.A.S. Johnson & K.D. Hill, sp. nov. 
Habitus 'malleeformis' (multicaulis); cortex in regione basali (usque ad medium 
trunci) persistens, quasi-fibrosa; ramuli et alabastri glauci. Affinitates aliquanto 
incertae, forsan E. striaticalycis affinis, sed calyptra laevi et hemisphaerica differt. 
Alternative aliquanto assimulat E. sheathianam quae cortice toto laevi longe 
decorticanti differt. 
Type: Western Australia: 8.6 km S of Queen Victoria Spring on Cundeelee track, K.D. 
Hill 2648 & L.A.S. Johnson, 30 Oct 1986 (holo NSW; iso PERTH). 
Mallee. Bark persistent on lower to half trunk, finely fibrous-flaky, pale grey, 
yellow-brown under. Twigs glaucous. Juvenile leaves not known. Adult leaves 
disjunct, broad-lanceolate, dull, 6-11 cm long, 1.5-2.5 cm wide; petioles terete, 1.5-3.0 cm 
long; lateral veins distinct, regular, moderately spaced, at 30-45° to midrib; 
reticulation incomplete; intramarginal vein continuous, distinct, within 0.5 mm of 
margin. Umbellasters simple, axillary, 7-11-flowered. Peduncles terete or ribbed, 8-15 mm 
long. Pedicels terete or slightly angled, 2-5 mm long. Buds glaucous, pyriform, 9-10 mm 
long, 5-6 mm diam.; calyptra shorter than hypanthium, as wide as hypanthium and 
lacking any constriction at the join, not striate, hemispherical. Fruits cylindrical, 4-5 
locular, 7-9 mm long, 5-6 mm diam.; calyptra scar and stemonophore flat, narrow 
(less than 0.5 mm wide); disc initially raised but sharply incurved and depressed for 
most of width, 1.5-2 mm wide (Fig. 26). 
Diagnosed as follows: mallee; bark persistent on lower trunk; adult leaves dull; twigs 
and buds glaucous. Relationships are unclear, but it may be allied to E. striaticalyx W.V. 
Fitzg., from which it is distinguished by the smooth hemispherical calyptra. 
Alternatively, there are resemblances to E. sheathiana, which differs in the wholly 
smooth bark shedding in long streamers. 
Known only from a small population at the type locality (Fig. 27). 
Fig. 25. Distribution of E. assimilans, E. georgei. 
