Arecaceae
Geonoma

Geonoma longivaginata H.Wendl. ex Spruce

First published in J. Linn. Soc., Bot. 11: 109 (1869)
This species is accepted
The native range of this species is SE. Nicaragua to Panama. It is a shrub or tree and grows primarily in the wet tropical biome.

Descriptions

General Description
Plants 3.0(1.0-8.0) m tall; stems 3.0(1.0-5.0) m tall, 1.1(0.6-2.1) cm in diameter, solitary or clustered, canelike; internodes 3.0(1.2-7.0) cm long, yellowish and smooth. Leaves 9(6-10) per stem, irregularly pinnate, not plicate, bases of blades running diagonally into the rachis; sheaths 14.9(6.0-26.0) cm long; petioles 28.4(5.5-58.0) cm long, drying green or yellowish; rachis 52.5(16.5-101.0) cm long, 4.1(1.4-8.0) mm in diameter; veins raised and rectangular in cross-section adaxially or not raised or slightly raised and triangular in crosssection adaxially; pinnae 6(2-13) per side of rachis; basal pinna 23.8(8.5-50.0) cm long, 4.1(0.7-34.5) cm wide, forming an angle of 64(31-92)° with the rachis; apical pinna 16.6(6.7-31.5) cm long, 12.7(5.5-30.0) cm wide, forming an angle of 38(27-50)° with the rachis. Inflorescences branched 1-2 orders; prophylls and peduncular bracts not ribbed with elongate, unbranched fibers, flattened, deciduous; prophylls 9.0(3.3-16.0) cm long, short, asymmetrically apiculate, the margins curved around the stem, the surfaces flat with dense, felty, brown tomentum, prophyll equal to and early deciduous with the peduncular bract, the surfaces not ridged, without unequally wide ridges; peduncular bracts 7.5(4.0-11.6) cm long, well-developed, inserted 0.3(0.1-0.6) cm above the prophyll; peduncles 8.8(3.8?16.0) cm long, 4.9(2.3-9.2) mm in diameter; rachillae 6(2-18), 23.3(10.0-42.0) cm long, 3.2(1.9-5.3) mm in diameter, the surfaces without spiky, fibrous projections or ridges, drying brown, with short, transverse ridges, not filiform and not narrowed between the flower pits; flower pits spirally arranged, glabrous internally; proximal lips without a central notch before anthesis, not recurved after anthesis, not hood-shaped; proximal and distal lips drying the same color as the rachillae, not joined to form a raised cupule, the proximal lip margins overlapping the distal lip margins; distal lips well-developed; staminate and pistillate petals not emergent, not valvate throughout; staminate flowers deciduous after anthesis; stamens 6; thecae diverging at anthesis, inserted onto bifid and well-developed, nonjointed connectives; anthers short and curled over at anthesis; non-fertilized pistillate flowers deciduous after anthesis; staminodial tubes crenulate or shallowly lobed at the apex, those of non-fertilized pistillate flowers not projecting and persistent after anthesis. Fruits 6.5(5.1-7.9) mm long, 5.3(4.3-6.3) mm in diameter, the bases without a prominent stipe, the apices not conical, the surfaces not splitting at maturity, without fibersemerging, bumpy from the numerous, subepidermal, tangential, short fibers present, these coming to a point at fruit apices; locular epidermis without operculum, smooth, without pores.
[PW]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/151999507/162591120

Conservation
NT - near threatened
[IUCN]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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