Haiti-Haiti

Scientific name: Thespesia populnea

POWO Status: Tree

IUCN Red List threat level: Least Concern

GPS Location: 17° 42′ 59.32″ N, 64° 49′ 47.35″ W

The most common botanical name for this species is Portia. Haiti-Haiti is regional to the US Virgin Islands

Observations:

Thespesia populnea – Phenology Markers

Common Names: Portia Tree, Seaside Mahoe, Milo (Hawaiian), Indian Tulip Tree
Scientific Name: Thespesia populnea
Family: Malvaceae
Native Range: Tropical Asia and the Pacific; naturalized and widespread throughout coastal regions of the Caribbean, including the Virgin Islands


General Description:

The Portia Tree is a medium-sized, fast-growing tree commonly found along tropical coastlines. Its heart-shaped leaves and showy, hibiscus-like yellow flowers (that darken to maroon as they age) make it visually striking. Highly salt-tolerant and wind-resistant, it is often used in erosion control and coastal restoration. The tree also holds traditional value for its strong, workable wood and medicinal uses.


Phenological Markers:

1. Flowering Period:

  • First Sign of Budding: Late winter to early spring (February – March)
  • Peak Bloom: Spring through summer (April – August)
  • End of Flowering: Late fall (October – November)
  • Flower Characteristics: Large, hibiscus-like flowers; bright yellow with a maroon center, fading to deep maroon before dropping; blooms typically last one day

2. Leaf Growth and Senescence:

  • New Leaf Growth: Late winter to early spring (February – April)
  • Leaf Maturity: Spring (April – May)
  • Leaf Senescence: Minimal in tropical climates; may shed older leaves gradually year-round
  • Leaf Characteristics: Broad, heart-shaped leaves with a glossy green surface; alternate arrangement

3. Fruit Production:

  • First Sign of Fruit Development: Spring to early summer (April – June)
  • Fruit Maturity: Summer to early fall (July – October)
  • End of Fruiting: Late fall (November)
  • Fruit Characteristics: Round, hard, woody capsules, about 1–2 inches across; mature fruits turn brown and may persist on branches or drop

4. Dormancy Period:

  • Dormancy Begins: Typically none in tropical coastal climates; growth slows during dry periods
  • Dormancy Ends: N/A
  • Dormancy Characteristics: The tree is evergreen under favorable conditions but may experience slowed leaf growth during drought

Ecological Notes:

  • Pollinators: Bees and butterflies
  • Wildlife Interaction: Flowers and fruits attract insects; fallen fruits may float and aid in seed dispersal
  • Soil Preferences: Thrives in sandy, coastal soils; highly salt- and wind-tolerant
  • Growth Habit: Dense, rounded canopy; usually 15–30 feet tall but can grow taller in optimal conditions

Observational Guidelines:

  • Best Time for Observation: April through October for full sequence of flowering and fruiting
  • Key Photo Opportunities:
    • Yellow blooms in the morning, maroon aging flowers in the afternoon
    • Leaf flush and overall canopy shape
    • Green to brown fruit capsule development
  • Phenology Triggers: Rainfall and rising temperatures initiate new growth and flowering
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