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Family Phyllanthaceae

Description: Herbs, shrubs, trees or rarely climbers, monoecious or dioecious, lacking latex.

Leaves usually alternate (rarely opposite), usually simple (rarely compound or absent); stipules present, sometimes caducous.

Inflorescences axillary, often a solitary flower, or terminal cymes or corymbs. Flowers actinomorphic, usually unisexual. Sepals 3–8, free. Petals as many as sepals or fewer, sometimes absent. Male flowers with 3–10 (–numerous) stamens, free or partly fused; anthers 2-celled, dehiscing by longitudinal slits or sometimes by apical pores; rudimentary ovary sometimes present. Female flowers with superior ovary, usually 3-locular (sometimes up to 15-celled), ovules 2 in each loculus (generally only 1 developing); styles usually 3, free or variously united, entire, 2-lobed or sometimes many-lobed; staminodes sometimes present; nectary disc sometimes present below ovary.

Fruit mostly a 3-locular capsule, often schizocarpic, rarely a berry or a drupe.


Distribution and occurrence: World: 59 genera, 2330 species, pantropical, some temperate. Australia: 16 genera, all States.

External links:
Angiosperm Phylogeny Website (Family: Phyllanthaceae, Order: Malpighiales)
Wikipedia

Previously treated as subfamily Phyllanthoideae in Euphorbiaceae. Can be distinguished from Euphorbiaceae by having 2 ovules per locule of the ovary, and in the absence of latex from structures (Flora of Victoria, accessed May 2017). Note, although each locule of the ovary has 2 ovules, only 1 may develop in fruit.

Text by (compiled) May 2017 (PGK)
Taxon concept: Australian Plant Census (accessed May 2017)

 Key to the genera 
1Herb or shrub; leaves to 15 mm wide2
Shrub or tree; leaves mostly more than 15 mm wide5
2Inflorescences terminal (corymbs)Poranthera
Inflorescences axillary
                       Back to 1
3
3Fruit succulent, a berry; styles unbranchedBreynia
Fruit dry, a schizocarpic capsule; styles bifid
                       Back to 2
4
4Flowers with a disc or glands; fruit depressed-globose, wider than longPhyllanthus
Flowers without a disc or glands; fruit ovoid or more or less globose, often longer than wide
                       Back to 3
Sauropus
5Petioles often more than 10 mm longActephila
Petioles less than 10 mm long
                       Back to 1
6
6Leaves with 12–15 pairs of secondary veinsBridelia
Leaves with less than 12 pairs of secondary veins
                       Back to 5
7
7Leaves distinctly 2-ranked and mostly pseudopinnate in arrangement8
Leaves not distinctly 2-ranked, never pseudopinnate in arrangement
                       Back to 6
Cleistanthus
8Lamina less than 30 mm long, glabrous, glaucous below, drying black above; fruit less than 5 mm diam.Breynia
Lamina more than 40 mm long, glabrous or finely pubescent, not glaucous below, not drying black; fruit more than 8 mm diam.
                       Back to 7
Glochidion

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