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  1. Family: Vitaceae Juss.
    1. Genus: Cissus L.
      1. Cissus amplexicaulis Trias-Blasi & J.Parn.

        This species is accepted, and its native range is Thailand.

    [KBu]

    Trias-Blasi, A., Parnell, J.A.N. & Chayamarit, K. 2010. Cissus amplexicaulis (Vitaceae), a new endemic species from Thailand. Kew Bulletin 65: 487. DOI: https://doi.org/10.1007/s12225-010-9216-1

    Type
    Thailand, Mae Hong Son, KhunYuam, Larsen & Larsen 34066 (holotypusAAU!;isotypi L!, P!).
    Habit
    Slender climber
    Stem
    Stems arising from underground stem tuber, cylindrical, to 3 mm diam., branched, hairy with erect hairs to 0.2 mm long, becoming glabrescent with thin peeling bark when older, striate; tendril bifurcate, leaf-opposed, cylindrical, 0.6 – 1 mm diameter, straight stalk to 5 cm long, then loosely coiling 4 – 7 cm, then unequally bifurcating and coiling to 2 – 3 cm, mostly glabrous but with some hairs at the leaf-insertion; stipules 2, ovate, c- 4 × 3 mm, apex rounded, base truncate, with rounded marking at the base, glabrous, papyraceous
    Leaves
    Leaves simple, alternate; petiole subsessile, to 1 – 4 (– 8) × 1.5 – 2.5 mm, hairy with hairs as on the stem; leaf blade lanceolate to narrowly ovate, 7.5 – 12 (– 19) × 1.5 – 3 (– 7) cm, base amplexicaul cordate, margin denticulate with minute mucronate teeth 0.3 – 0.5 mm long, directed to the apex, apex acute; adaxial and abaxial side glabrous except for the midrib and some secondary veins bearing hairs 0.1 mm long, abaxial with veins protruding, 5 main basal veins, midrib twice as broad as the main lateral veins, 5 secondary veins on each side of the midrib
    Inflorescences
    Inflorescence ramified, leaf-opposed to terminal, umbellate, to 1 cm long (excluding peduncle); peduncle 2 – 7 mm long, 2 – 3 peduncles rising from the same point on the stem with verticillate-arranged pedicels, pedicel c- 3 mm long, glabrous
    Buds
    Buds ovoid to oblongoid, 1.25 – 2.5 × 1 – 2 mm, apex rounded, glabrous
    Calyx
    Calyx cupuliform, gibbous in one side, entire, c- 0.75 × 1.5 mm, glabrous
    Corolla
    Corolla petals ovate, c- 2 × 1 – 1.5 mm, apex cucullate, glabrous
    Stamens
    Stamens with filaments filiform, flattened, c- 0.75 – 1 × 0.2 mm; anthers orbicular, medifixed, 0.5 – 0.75 mm long
    Ovary
    Ovary adnate to the disc; disc with 4 very distinct lobes, 1 × 1.5 mm, each lobe 0.4 – 0.5 mm broad, glabrous
    Style
    Style cylindrical broadening at the base, 0.3 – 0.6 mm long; stigma inconspicuous
    Fruits
    Fruit berry, black outside, orange inside, globose with a minute tip, c- 5 × 4.5 – 5 mm, glabrous, smooth
    Seeds
    Seeds 1, globose with a pointed base, c- 4 × 3 – 3.5 mm, rather smooth with a protruding rib
    Distribution
    Endemic to Thailand.
    Ecology
    Climber in thicket along a stream or in dipterocarp forest; 600 – 1000 m.
    Conservation
    Cissusamplexicaulis is known from four collections in four different locations all in North-Western Thailand, the most recent one made in 1996. In addition, the localities appear to be in protected areas and although forest fires can occur there, the presence of an underground stem tuber in this species suggests that it could survive fire. Therefore, we feel that this species might not be threatened. However, it is recommended to treat this species as Data Deficient (DD) (IUCN 2001) until more data are obtained.
    Note
    Morphologically, the most similar species to Cissusamplexicaulis is C. hastataMiq. because of its similar habit, tendril and fruit size and shape. The differences between C. amplexicaulis and C. hastata are summarised in Table 1. Flowering: Sept. – Oct.; fruiting: Sept. – Dec. Distinctive characters in Cissusamplexicaulis are: presence of an underground stem tuber, leaves subsessile with a cordate amplexicaul base, inflorescence with several peduncles rising from the same point at the stem and each peduncle with verticillate pedicels. The specific epithet “amplexicaulis” translates as “stem-clasping”. This refers to the tendency of the leaf-base to clasp the stem, an unusual character within the genus Cissus.

    Distribution

    Native to:

    Thailand

    Other Data

    Cissus amplexicaulis Trias-Blasi & J.Parn. appears in other Kew resources:

    Bibliography

    First published in Kew Bull. 65: 487 (2010 publ. 2011)

    Literature

    Kew Bulletin

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    • IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Comission, IUCN, Gland, Switzerland and Cambridge, U.K.Google Scholar
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    Sources

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. 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 2020. 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