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Genus Phebalium Family Rutaceae

Description: Shrubs, ± covered, at least when young, with silvery to rust-coloured, circular to stellate scales, unarmed; branchlets often glandular-warty.

Leaves alternate, simple, glandular-punctate and often glandular-warty, margins entire or toothed.

Inflorescences terminal, umbellate or flowers solitary; bracteoles basal to pedicels and insignificant. Flowers bisexual, mostly 5-merous, to 8-merous in P. nottii. Calyx usually 5-lobed, scaly outside. Petals usually 5, free, imbricate, yellow, white or pink, scaly on the outside,apex not inflexed. Stamens usually 10, free; filaments slender-terete; anthers basifixed, apex with a prominent spherical gland. Carpels usually 5, scaly, style terete; stigma small with shortly spreading lobes; ovules 2 per carpel.

Fruit of 1–5 cocci; cocci not transversely ridged, with a rounded or beaked apex; seeds oblong-reniform, surface longitudinally striate or corrugate, black.

Photo © ANBG

Distribution and occurrence: World: 25 spp., endemic Aust., all States except N.T.

Text by P.H. Weston & G.J. Harden
Taxon concept:

Taxa not yet included in identification key
Phebalium bifidum

 Key to the species 
1Calyx 5–8 mm long; corolla pink to deep mauve; flowers 5–8-merous.Phebalium nottii
Calyx <4 mm long; corolla white to bright yellow; flowers 5-merous.2
2Leaves 2–3.5 mm long, broad-obovate to obcordate.Phebalium obcordatum
Leaves mostly >4 mm long, variously shaped.
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3Calyx c. 3 mm long, deeply dissected with triangular lobes c. 1.5 mm long; leaves smooth, without prominent glands, 15–60 mm long; corolla white or rarely pink.Phebalium woombye
Calyx <2 mm long, margin truncate to undulate, or if lobed then either stems and upper surface of leaves with prominently raised glands, or leaves <12 mm long; corolla pale to bright yellow, or rarely white.
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4Leaves glandular-warty above, usually with glandular-undulate to crenate margins.5
Leaves smooth, with entire, straight margins, glands punctate, not prominently raised.
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5Leaves cuneate to linear-cuneate.Phebalium glandulosum
Leaves oblong to linear or narrow-elliptic.
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Phebalium squamulosum
6Leaves with midvein not apparent above, 0.8–2 mm wide, linear to narrow-oblong, with recurved to tightly revolute margins.Phebalium stenophyllum
Leaves either with midvein slightly to strongly impressed above, or >2 mm wide, variously shaped, with flat to revolute margins.
                       Back to 4
Phebalium squamulosum

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