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Genus Croton Family Euphorbiaceae

Description: Trees or shrubs, densely or sparsely covered with stellate hairs or scales, sometimes glabrescent with age.

Leaves alternate, toothed or crenate to entire, pinnately veined, 2 glands usually at junction of petiole with lamina.

Inflorescence terminal, raceme-like, mixed, female flowers often reduced to 1 basal flower. Sepals and petals mostly 5. Male flowers with small glands opposite the sepals; stamens 5–30. Female flowers with petals very small or absent; styles 3, divided into 2 or 4 branches, ovule solitary in each loculus.

Capsule 3-lobed, ± globose.


Photo © ANBG

Distribution and occurrence: World: c. 750 species, tropical & subtropical regions. Australia: 12 species, Qld, N.S.W., N.T., tropical & E coast.

Text by T. A. James & G. J. Harden
Taxon concept:

Taxa not yet included in identification key
Croton setigerus

 Key to the species 
1Mature leaves green and glabrous, or almost so, on both surfaces2
Mature leaves white or silvery below, densely covered with stellate hairs or scales on the lower surface, or on both surfaces3
2Leaves thick; petiolar glands sessile; buds and young stems covered with brown scales, scales also sparsely scattered on lower surface of younger leaves, glabrescent with ageCroton acronychioides
Leaves thin; petiolar glands stalked; buds and young stems covered with silvery scales; lamina glabrous on both surfaces
                       Back to 1
Croton verreauxii
3Leaves more or less glabrous and green above, silvery or whitish below; petiolar glands usually present4
Leaves densely woolly with stellate hairs, both surfaces white; petiolar glands absent
                       Back to 1
Croton capitatus
4Leaves more than 15 mm wide, glands present5
Leaves less than 15 mm wide, glands sometimes absent
                       Back to 3
6
5Leaves silvery below, covered with scales; petiolar glands sessileCroton insularis
Leaves whitish below, covered with stellate hairs; petiolar glands stalked
                       Back to 4
Croton stigmatosus
6Margins of leaves usually entire, secondary veins slightly raised above, more or less obscure belowCroton phebalioides
Margins of leaves mostly toothed, secondary veins impressed above, distinctly raised below
                       Back to 4
Croton stigmatosus

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