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

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.
Distribution
Endemic to Thailand.
Ecology
Climber in thicket along a stream or in dipterocarp forest; 600 – 1000 m.
Morphology General Buds
Buds ovoid to oblongoid, 1.25 – 2.5 × 1 – 2 mm, apex rounded, glabrous
Morphology General Habit
Slender climber
Morphology 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
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens with filaments filiform, flattened, c- 0.75 – 1 × 0.2 mm; anthers orbicular, medifixed, 0.5 – 0.75 mm long
Morphology Reproductive morphology Flowers Calyx
Calyx cupuliform, gibbous in one side, entire, c- 0.75 × 1.5 mm, glabrous
Morphology Reproductive morphology Flowers Corolla
Corolla petals ovate, c- 2 × 1 – 1.5 mm, apex cucullate, glabrous
Morphology Reproductive morphology Flowers Gynoecium 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
Morphology Reproductive morphology Flowers Gynoecium Style
Style cylindrical broadening at the base, 0.3 – 0.6 mm long; stigma inconspicuous
Morphology Reproductive morphology Fruits
Fruit berry, black outside, orange inside, globose with a minute tip, c- 5 × 4.5 – 5 mm, glabrous, smooth
Morphology Reproductive morphology 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
Morphology Reproductive morphology Seeds
Seeds 1, globose with a pointed base, c- 4 × 3 – 3.5 mm, rather smooth with a protruding rib
Morphology 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
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.
Type
Thailand, Mae Hong Son, Khun Yuam, Larsen & Larsen 34066 (holotypus AAU!; isotypi L!, P!).

Native to:

Thailand

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

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

Accepted by

  • Chayamarit, K. & Balslav, H. (eds.) (2020). Flora of Thailand 14(4): 511-669. The Forest Herbarium, Royal Forest Department.

Literature

Kew Bulletin

  • IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Comission, IUCN, Gland, Switzerland and Cambridge, U.K.
  • Linnaeus, C. (1753). Species Plantarum. ImpensisLaurentiiSalvii, Stockholm.
  • Planchon, J. E. (1887). Monographie des Ampélidéesvrais. In: A. F. P. P. De Candolle & C. De Candolle, MonographiaePhanaerogamarum 5, pp. 305 – 654. G. Masson, Paris.
  • Rossetto, M., Jackes, B., Scott, K. D. & Henry, R. J. (2002). Is the genus Cissus (Vitaceae) monophyletic: evidence from plastid and nuclear ribosomal DNA. Syst. Bot. 27: 522 – 533.
  • Soejima, A. & Wen, J. (2006). Phylogenetic analysis of the grape family (Vitaceae) based on three chloroplast markers. Amer. J. Bot. 93: 278 – 287.CrossRefGoogle Scholar
  • Wen, J. (2007). Vitaceae. In: K. Kubitzki (ed.), The families and genera of vascular plants 9, pp. 467 – 479. Springer-Verlag, Berlin.
  • ____, Crayn, D. M., Jackes, B. R. & Porter, C. (2007). An updated estimate of intergeneric phylogenetic relationships in the Australian Vitaceae. Canad. J. Bot. 85: 722 – 730.CrossRefGoogle Scholar
  • ____, Nie, Z.-L., Soejima, A. & Meng, Y. (2007). Phylogeny of Vitaceae based on the nuclear GAI1 gene sequences. Canad. J. Bot. 85: 731 – 745.CrossRefGoogle Scholar

Kew Backbone Distributions

  • Chayamarit, K. & Balslav, H. (eds.) (2020). Flora of Thailand 14(4): 511-669. The Forest Herbarium, Royal Forest Department.

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. 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 2021. 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