Notoleptopus Voronts. & Petra Hoffm.

This genus is accepted, and its native range is Jawa to N. Australia.


Vorontsova, M.S. & Hoffmann, P. (2008). A phylogenetic classification of tribe Poranthereae (Phyllanthaceae, Euphorbiaceae sensu lato). Kew Bulletin 63: 41.

Leptopo similis sed ramis maturis foliisque utrinque sepalisque ovarioque capsulisque pilos densos c. 1 mm longos tantum ferentibus (nec glabris neque ramulis juvenibus tantum pilos sparsos ferentibus), foliis maturis obovatis 0.9 – 2.5 cm tantum longis (nec orbicularibus neque ovatis neque ellipticis neque lanceolatis 0.8 – 10 cm longis), seminibus vivide atris profunde rugosis (nec pallide flavidis neque brunneis neque laevibus neque rugosis neque scrobiculatis) differt.
Java, Lesser Sunda Islands, New Guinea, Australia; 1 species.
Morphology General Habit
Monoecious shrubs
Morphology General Indumentum
Indumentum densely pubescent
Morphology Leaves
Leaves alternate, petiolate, entire, penninerved, 1 – 2 times longer than wide, chartaceous
Morphology Leaves Stipules
Stipules persistent, membranaceous, margin entire, ciliate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5; filaments free; anthers longitudinally dehiscent
Morphology Reproductive morphology Flowers Calyx
Sepals 5, slightly accrescent
Morphology Reproductive morphology Flowers Corolla
Petals 5, slightly shorter than sepals in staminate flowers, much shorter than sepals in pistillate flowers
Morphology Reproductive morphology Flowers Disc
Disc in staminate flowers annular, regularly divided into 5 segments bilobed for less than 1/3 of their length, lobes rounded, membranaceous to chartaceous; disc in pistillate flowers annular, regularly and deeply divided into 5 emarginate or erose segments, membranaceous to chartaceous
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 3-locular, densely pilose; ovules anatropous
Morphology Reproductive morphology Flowers Gynoecium Pistillodes
Pistillode composed of 3 free segments
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigmas rounded to apically dilated
Morphology Reproductive morphology Flowers Gynoecium Style
Styles free, bifid to base
Morphology Reproductive morphology Flowers Pedicel
Pedicels articulate above base; articulation practically invisible before abscission
Morphology Reproductive morphology Flowers Pollen
Pollen prolate; exine tectate perforate to microreticulate
Morphology Reproductive morphology Fruits
Columella 6 times longer than its narrowest width Fruit 3-lobed
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, solitary to fasciculate
Morphology Reproductive morphology Seeds
Seeds 2 per locule, ecarunculate, rounded triquetrous, rugose
Morphology Reproductive morphology Seeds Cotyledons
Cotyledons equal, broad, thin, as long as radicle, much wider than radicle.
Morphology Reproductive morphology Seeds Embryo
Embryo longitudinally curved
Morphology Reproductive morphology Seeds Endosperm
Endosperm copious, deeply invaginate
Notoleptopus is a surprising segregate from Leptopus as its generic affiliation has not previously been under question. This may be due to shared plesiomorphic morphological characters that are preserved in these mesomorphic members of the tribe. Molecular phylogenetic analysis, however, places this taxon closer to the Southern Hemisphere Pseudophyllanthus and Poranthera.
Notoleptopus decaisnei (Benth.) Voronts. & Petra Hoffm. comb. nov.

Native to:

Jawa, Lesser Sunda Is., New Guinea, Northern Territory, Queensland, Western Australia

Notoleptopus Voronts. & Petra Hoffm. appears in other Kew resources:

First published in Kew Bull. 63: 50 (2008)

Accepted by

  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at and
    © Copyright 2017 World Checklist of Selected Plant Families.

  • Kew Bulletin

    Kew Bulletin

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at and
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.