Leptopus Decne.

This genus is accepted, and its native range is Caucasus to China and Malesia.

[KBu]

Vorontsova, M.S. & Hoffmann, P. (2008). A phylogenetic classification of tribe Poranthereae (Phyllanthaceae, Euphorbiaceae sensu lato). Kew Bulletin 63: 41. https://doi.org/10.1007/s12225-007-9012-8

Distribution
Caucasus to Malesia; nine species.
Morphology General Habit
Monoecious (rarely dioecious) Herbs to shrubs, procumbent, ascendant or erect Monoecious procumbent to erect herbs or shrubs
Morphology General Indumentum
Indumentum simple or 0 Indumentum simple or 0
Morphology Leaves
Leaves alternate, petiolate, entire, penninerved, 1.5 – 6 times longer than wide, membranaceous to coriaceous Leaves alternate, petiolate, entire, penninerved, 1.5 – 5 times longer than wide, membranaceous to coriaceous, eglandular
Morphology Leaves Petiole
Petioles adaxially grooved
Morphology Leaves Stipules
Stipules persistent, membranaceous, eglandular, margin entire to lobed, glabrous or ciliate Stipules persistent, membranaceous, margin entire to lobed, glabrous or ciliate
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 5; filaments free; anthers longitudinally dehiscent Stamens 5, oppositisepalous; filaments free, filiform; anthers latrorse in bud, ellipsoid, longitudinally dehiscent
Morphology Reproductive morphology Flowers Calyx
Sepals 5 (6), not accrescent to slightly accrescent Sepals 5 (6), imbricate, entire, chartaceous, not accrescent to slightly accrescent in fruit. Petals 5 (6), membranaceous, shorter than or as long as the sepals in male flowers, minute and often hidden under disc lobes in female flowers
Morphology Reproductive morphology Flowers Corolla
Petals 5 (6), shorter than or as long as the sepals in staminate flowers, minute and often hidden under disc lobes in pistillate flowers
Morphology Reproductive morphology Flowers Disc
Disc in staminate flowers composed of 5 (6) contiguous regular segments bilobed for 1/3 to 5/6 of their length, lobes rounded, truncate or irregular, membranaceous to chartaceous; disc in pistillate flowers annular, regularly divided into 5 emarginate segments, lobes entire to erose, membranaceous to chartaceous Disc extrastaminal, chartaceous becoming membranaceous with age, glabrous; disc in male flowers composed of 5 (6) contiguous regular segments bilobed for ⅓ - ⅘ of their length, lobes rounded, truncate or irregular; disc in female flowers annular, regularly divided into 5 emarginate segments, lobes entire to erose
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 3 (4)-locular (4 – 5-locular in L. fangdingianus), glabrous to pilose; ovules anatropous Ovary 3 (4)-locular (4- or 5-locular in L. fangdingianus), globose, glabrous to pilose
Morphology Reproductive morphology Flowers Gynoecium Ovary Ovules
Ovules 2 per locule, anatropous, straight, adnate to the funicle for ⅘ of the ovule length; obturator translucent covering apices of both ovules
Morphology Reproductive morphology Flowers Gynoecium Pistillodes
Pistillode composed of 3 free segments or 3-lobed Pistillode composed of 3 free segments or 3-lobed
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigmas apically dilated to capitate, smooth Stigmas apically dilated to capitate
Morphology Reproductive morphology Flowers Gynoecium Style
Styles free (sometimes fused for up to ½ length in L. pachyphyllus), erect, bifid to base or nearly so, recurved Styles free, bifid to base or nearly to base
Morphology Reproductive morphology Flowers Pedicel
Pedicels articulate above base; articulation practically invisible before abscission Female pedicels apically dilated, not articulate Male pedicels usually filiform, articulate above base; articulation practically invisible before abscission
Morphology Reproductive morphology Flowers Pollen
Pollen prolate to subprolate; exine tectate perforate to microreticulate Pollen prolate to subprolate; exine tectate perforate to microreticulate
Morphology Reproductive morphology Fruits
Fruit 3- (4- or 5)-lobate to subglobose, smooth, sometimes with faint reticulate venation. Columella persistent, 5 – 6 times longer than its narrowest width Columella 5 – 6 times longer than its narrowest width Fruit 3 –(4 – 5)-lobate to subglobose
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, solitary or fasciculate, staminate flowers sometimes on short densely bracteate inflorescences Inflorescences axillary, solitary or fasciculate, male flowers sometimes on short densely bracteate inflorescences
Morphology Reproductive morphology Seeds
Seeds ecarunculate (fleshy micropylar seed appendages in L. emicans), rounded triquetrous to almost reniform, smooth, rugose or pitted, dull; micropyle minute Seeds 2 per locule, ecarunculate (fleshy micropylar appendages in L. emicans seed), rounded triquetrous to almost reniform, smooth, rugose or pitted
Morphology Reproductive morphology Seeds Cotyledons
Cotyledons equal, broad, thin, as long as the radicle or longer, much wider than radicle Cotyledons positioned parallel to the pericarp Cotyledons equal, broad, thin, as long as the radicle or longer, much wider than radicle.
Morphology Reproductive morphology Seeds Embryo
Embryo longitudinally curved to almost straight Embryo longitudinally curved to almost straight
Morphology Reproductive morphology Seeds Endosperm
Endosperm copious, entire to deeply invaginate in cross section Endosperm copious, entire in cross section to deeply invaginate
Note
Synonym: Thelypetalum Gagnep. (1924 publ. 1925: 876). Type: Thelypetalum pierrei Gagnep. Synonym: Hexakistra Hook. f. (1887a: 283), nom. invalid., in synon. Synonym: Arachne Neck. (1790: 348) nom. invalid., opus oppressum (Art. 32.9, App. VI, McNeill et al.2006).
Type
Leptopus cordifolius Decne. L. cordifolius Decne.

Native to:

Afghanistan, Andaman Is., Assam, Borneo, China North-Central, China South-Central, China Southeast, East Himalaya, Hainan, India, Iran, Jawa, Laos, Lesser Sunda Is., Malaya, Maluku, Myanmar, Nepal, North Caucasus, Pakistan, Philippines, Thailand, Tibet, Transcaucasus, Vietnam, West Himalaya

Leptopus Decne. appears in other Kew resources:

First published in V.Jacquemont, Voy. Inde 4: 155 (1844)

Accepted by

  • Vorontsova, M.S. & Hoffmann, P. (2010). Revision of the genus Leptopus (Phyllanthaceae, Euphorbiaceae sensu lato) Kew Bulletin 64: 627-644.

Not accepted by

  • Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Andrachne.]

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

  • Kew Bulletin

    Kew Bulletin
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0