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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 
1Corolla pink; flowers 5–8 merous2
Corolla white or bright yellow, sometimes ageing pink; flowers 5-merous3
2Leaves >7 mm wide, lanceolate or ellipticPhebalium speciosum
Leaves <5 mm wide, narrow elliptic
                       Back to 1
Phebalium nottii
3Leaves 2–3.5 mm long, broad-obovate to obcordatePhebalium obcordatum
Leaves mostly >4 mm long, variously shaped
                       Back to 3
3
4Calyx 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 pinkPhebalium 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
                       Back to 4
4
5Leaves glandular-warty above, usually with glandular-undulate to crenate margins5
Leaves smooth, with entire, straight margins, glands punctate, not prominently raised
                       Back to 5
6
6Leaves cuneate to linear-cuneatePhebalium glandulosum
Leaves oblong to linear or narrow-elliptic
                       Back to 5
Phebalium squamulosum
7Leaves with midvein not apparent above, 0.8–2 mm wide, linear to narrow-oblong, with recurved to tightly revolute marginsPhebalium stenophyllum
Leaves either with midvein slightly to strongly impressed above, or >2 mm wide, variously shaped, with flat to revolute margins
                       Back to
Phebalium squamulosum

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