Arecaceae
Prestoea

Prestoea tenuiramosa (Dammer) H.E.Moore

First published in Gentes Herbarum 9: 286 (1963)
This species is accepted
The native range of this species is S. Venezuela to Guyana and N. Brazil. It is a tree and grows primarily in the wet tropical biome.

Descriptions

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/38640/10141241

Conservation
NT - near threatened
[IUCN]

Vernacular
Guyana: manicole palm; Venezuela: manacachilla.
General Description
Stem solitary or cespitose, erect, 4-10 m tall , 8- 20 cm diam. Leaves 7-15; sheath open and not forming a crownshaft or forming an indistinct crownshaft, persistent, ca. 50 cm long, reddish brown or maroonpurple, with scattered, appressed, brown scales, fibrous at the margins distally; petiole 20-40 cm long, covered with apressed, brown or white scales; rachis to 1.8 m long, with scales like those of petiole; pinnae 38-45 per side, regularly spaced and spreading horizontally in the same plane, subopposite or alternate, linear- lanceolate, long-acuminate, strongly plicate, punctate on abaxial surface, with prominent midvein and several lateral veins. Abaxial surface of veins with prominent, scattered, brown ramenta especially on midvein; basal pinna 27-37 x 0.2-0.8 cm; middle pinnae 43-65 x 2.5-3 cm; apical pinna 18-22 x 0.8- 1.5 cm. Inflorescences infrafoliar or interfoliar, corymbose; peduncle 26-30 cm long, 1 cm diam., ± terete; prophyll to 35 cm long, 4-5 cm diam.; peduncular bract to 97 cm long, ca. 3 cm diam.; rachis 33-36 cm long; rachillae ca. 40, 40-48 cm long proximally, 18-20 cm long distally, 2-3 mm diam., sparsely to densely covered with short, irregular, branched, brownish, crustose hairs; flowers in triads almost to apices of rachillae; triad bracteole small; first flower bracteole very small, rounded, second and third flower bracteoles scarcely apiculate, rounded, 0.5 mm high; staminate flowers 3.5-4 mm long, sessile; sepals deltate, 1-1.5 mm long, gibbous; petals ovate-lanceolate, 3.5-4 mm long; stamens arranged on a short receptacle; filaments 1-2 mm long, flattened; anthers 2- 2.5 mm long; pistillode 1- 1.5 mm long, trifid at the apex; pistillate flowers 2-3 mm long; sepals very widely ovate, 2 mm long; petals very widely ovate, 2 mm long; staminodes digitate. Fruits globose, 1-1.2 cm diam. , the stigmatic remains lateral; epicarp purple-black; seeds globose; endosperm deeply ruminate; eophyll not seen.
Distribution
Guayana Highland (tepuls) of Venezuela (Amazonas, Bolivar) and adjacent Guyana and Brazil (Amazonas). cloud forest at 1200-2000 m.
[PW]

Sources

  • Herbarium Catalogue Specimens

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Palmweb - Palms of the World Online

    • Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet http://www.palmweb.org. Accessed on 21/04/2013
    • Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License http://creativecommons.org/licenses/by-nc-sa/3.0