Phyllanthus elsiae

Phyllanthus elsiae Urb., 1919

Also known / common namesSpanish — Data deficient

Phyllanthus elsiae(s) General Description

Evergreen riverine tree typically 7–10 m tall with a dense, rounded crown and gray-brown bark; often single-stemmed but may resprout after pruning. Leaves alternate with conspicuous ochreae (sheathing stipules) at the petiole base; blades leathery, entire-margined, elliptic to suborbicular, with prominent secondary venation beneath. Inflorescences are very elongate, many-flowered spikes, bearing small, greenish-cream, fragrant flowers; plants are often functionally dioecious as in many Coccoloba. Fruits are achenes enclosed by a fleshy, accrescent perianth (“grape-like” strings), edible but astringent, and attractive to frugivores.

Has Sexual Diamorphism?

LIFE‑HISTORY & VITAL STATISTICS OF THE Phyllanthus elsiae(S)

Average Height / Length / Diameter

Height 7–10 m; typical DBH 10–30 cm (riparian trees; approximate).

Average Adult Weight / Mass

Data deficient

Typical Lifespan / Longevity

Perennial tree; Data deficient (likely several decades)

Typical Lifespan / Longevity for males

Not enough data

Typical Lifespan / Longevity for Females

Not enough data

Age at Sexual Maturity

Data deficient

Breading Season

Flowering May–June and December in Costa Rica (observed).

Gestation

Fruit development weeks to few months (general for genus); Data deficient for species-specific timing

Reproductive Outcome

Ecology and Behaviour for Phyllanthus elsiae(s)

Evergreen riverine tree typically 7–10 m tall with a dense, rounded crown and gray-brown bark; often single-stemmed but may resprout after pruning. Leaves alternate with conspicuous ochreae (sheathing stipules) at the petiole base; blades leathery, entire-margined, elliptic to suborbicular, with prominent secondary venation beneath. Inflorescences are very elongate, many-flowered spikes, bearing small, greenish-cream, fragrant flowers; plants are often functionally dioecious as in many Coccoloba. Fruits are achenes enclosed by a fleshy, accrescent perianth (“grape-like” strings), edible but astringent, and attractive to frugivores.

Habitat

Riparian forest and floodplains of the Central Pacific lowlands (Parrita, Puntarenas); also used as live fences and shade trees in pastures. Tolerates seasonally waterlogged alluvial soils.

Trophic Chain

Primary producer; zoocoric fruits (birds, other frugivores) and melittophilous flowers that attract butterflies, bumblebees, bees, and wasps.

Interespecies relationships noted for Phyllanthus elsiae

Mutualism +/+

Pollinators (butterflies, bumblebees, bees, wasps) obtain nectar/pollen; tree gains pollination (May–Jun & Dec blooms).

Symbiosis +/+

Likely mycorrhizal associations enhance nutrient uptake in alluvial soils; fungi gain carbon (inferred for the genus/family).

Commensalism +/0

Epiphytes and lianas use its trunk/canopy as substrate; tree largely unaffected under moderate loads. (General riparian forest dynamic.)

Inquilinism +/0

Birds nesting in the dense crown benefit from structure/shade; minimal cost to the tree. (Observed broadly in live-fence trees.)

Phoresy +/0

Seeds may be incidentally transported in mud on hooves/boots, aiding dispersal; vector unaffected. (General riparian scenario.)

Tanatocresis +/0

Dead wood provides habitat for detritivores and cavity nesters; tree already dead.

Parasitism -/+

Fungal pathogens and sap-sucking hemipterans can reduce vigor; species-specific data deficient.

Predation (Herbivory) + / – (for dispersers + / tree –)

Birds and mammals consume the fleshy perianth; damage to tissues offset by seed dispersal along rivers.

Amensalism 0/-

Dense shade beneath adult trees can suppress seedlings of other species in narrow riparian strips.

Competition -/-

Competes with grasses/invasive shrubs in disturbed banks; altered flows can favor heliophiles over saplings.

Social behaviour of Phyllanthus elsiae

  • Not applicable (plant). Perennial riparian tree frequently planted as live fence/shade; resprouts well after pruning and coppicing.

Distribution and Sighthings ofPhyllanthus elsiae(s) in Costa Rica

General Regions of Costa Rica where to find Phyllanthus elsiaes

Tropical

National Parks and Reserves of Costa Rica where to find Phyllanthus elsiaes

Parque Nacional Cahuita

Best Time to seePhyllanthus elsiae(s) in Costa Rica

Dry Season
January
February
March
April
June
July
August
September
October
November
December

Media

Videos

Sounds and calls

Taxonomy

Conservation Status

Status IUCN

Threats

⚠️Coastal development & tourism pressure in the Limón area affecting lagoon/estuary margins.
⚠️Hydrologic alteration & pollution in estuaries/mangroves reducing suitable back-mangrove thickets.
⚠️Very narrow known distribution in Costa Rica (single confirmed locality), increasing vulnerability to local disturbances.
⚠️Climate change (sea-level rise/salinity shifts) impacting coastal ecotones used by the species.

Fun Facts

  • First confirmed Costa-Rican record in 2024 at Estero Negro (between Limón and Cahuita).

  • The species is explicitly noted as dioecious in national reporting.

  • WFO lists leafy branchlets with very large leaves (10–30 cm) and a dry, woody drupe, highlighting unusual fruit type within the genus.

  • Broader range includes Mexico, Central America, the West Indies and Guianas at low elevations.

Origins & Record

Origin Status

Native

Population trend

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