Anadendrum marcesovaginatum P.C.Boyce
  • Thai Forest Bull., Bot. 37: 5 (2009) 


Notes: Distribution: Pen. Thailand

General Description

Evergreen, medium-sized, moderate lianescent herb to 2 m. Stem of adult plants root-climbing. Leaves distichous scattered on climbing shoots, barely congested into loose fans at shoot tips where flowering events occur, these flowering modules soon overtopped by primary shoot reiteration and then displaced to appear morphologically lateral. Lamina oblong-lanceolate, often somewhat falcate, weakly oblique, 22–25 by 8–9 cm, base cuneate, apex acuminate, apiculate, dark green above, paler below when fresh, drying black-brown above, very slightly paler below; primary lateral veins pinnate ca 7 per side, running into marginal vein, interprimary veins slightly less prominent, higher order venation reticulate. Petiole pulvinate apically, 12–20 cm long, petiolar sheath extending 4/5 length of the petiole, membranous but soon turning papery, thence degrading into fibres before falling to leave a papery scar. Inflorescence 1–3 in each floral sympodium. Peduncle spreading to declinate with the spadix erect, much shorter than to exceeding petiole, 4–7 cm long, each subtended by membranous, later papery cataphylls and the whole synflorescence subtended by several such cataphylls. Spathe lanceolate, strongly rostrate and also contracted onto the stipe, gaping, then reflexed at anthesis, then soon caducous, ca. 5 by 2.5 cm, very pale green. Spadix stipitate, fertile portion 2.5–3 by 0.5 cm, greenish white at anthesis, green post-anthesis, stipe 0.5 cm, green. Flowers bisexual, perigone membranous, just exceeding the gynoecium. Stamens with short, broadly linear filaments, anthers shorter than filaments. Gynoecium obpyramidal, tetragonal, stylar region 3 by 3 mm, rhomboidal, truncate, stigma transverse-linear. Fruit a subglobose truncate-topped berry, green when immature, bright glossy red with black stigmatic remains when ripe.

Evergreen, medium-sized lianescent secondary hemiepiphyte to 2 m. Stem (adult) root-climbing. Leaves distichous scattered on climbing shoots, barely congested into loose fans at shoot tips where flowering events occur, these flowering modules soon overtopped by primary shoot reiteration and then displaced to appear morphologically lateral; petiole pulvinate apically, 12–20 cm long; petiolar sheath extending 4/5 length of the petiole, membranous but soon turning papery, then degrading into fibres before falling to leave a papery scar; leaf blade oblong-lanceolate, often somewhat falcate, weakly oblique, 22–25 × 8–9 cm, base cuneate, apex acuminate, apiculate, dark green above, paler below when fresh, drying black-brown above, very slightly paler below; primary lateral veins pinnate, ca 7 per side, running into marginal vein; interprimary veins slightly less prominent; higher order venation reticulate. Inflorescence 1–3 in each floral sympodium; peduncle spreading to declinate with the spadix erect, much shorter than to exceeding petiole, 4–7 cm long, each subtended by membranous, later papery cataphylls and the whole synflorescence subtended by several such cataphylls; spathe lanceolate, strongly rostrate and also contracted onto the stipe, gaping, then reflexed at anthesis, then soon caducous, ca 5 × 2.5 cm, very pale green; spadix stipitate; fertile portion2.5–3 × 0.5 cm, greenish white at anthesis, green afterwards; stipe 0.5 cm, green; flowers bisexual, perigone membranous, just exceeding the gynoecium; stamens with short, broadly linear filaments; anthers shorter than filaments; gynoecium obpyramidal, tetragonal, stylar region 3 × 3 mm, rhomboidal, truncate, stigma transverse–linear; fruit a subglobose truncate-topped berry, green when immature, bright glossy red with black stigmatic remains when ripe.

Diagnostic Description

The long petioles with soon-marcescent petiolar sheaths and plants drying black-brown are diagnostic. In drying very dark A. marcesovaginatum approaches A. microstachyum (Java) which differs, among other characters, in having persistent petiolar sheaths.

Habitat

Evergreen forest

Evergreen forest. 100–200 m asl.

Distribution

Thailand.— PENINSULAR: Nakhon Si Thammarat [type], Phatthalung.

Peninsular Thailand: Nakhon Si Thammarat. Endemic.

Uses

None recorded.

Distribution Map

 
  • Native distribution
Found in
  • Asia-Tropical Indo-China Thailand

  Bibliography

  • 1 Boyce, P.C., Sookchaloem, D., Hetterscheid, W.L.A., Gusman, G., Jacobsen, N., Idei, T. & Nguyen, V.D. (2012). Flora of Thailand 11(2): 101-325. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
  • 2 Govaerts, R.H.A. (2011). World checklist of selected plant families published update. Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
  • 3 Boyce, P.Charles Anadendrum (Araceae: Monsteroideae: Anadendreae) in Thailand. 37, (2009).
  • 4 Boyce, P.Charles et al. Araceae. Flora of Thailand 11, (2012).

 Information From

CATE Araceae
http://araceae.e-monocot.org
Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 14 Dec 2011 . 17 Dec 2011.
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eMonocot
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eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
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World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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