Trimenia moorei 

Location & distribution maps

Phylogeny & links to associated information

Wikipedia links:       Angiosperms > Basal Angiosperms >  Austrobaileyales > Trimeniaceae > Trimenia  moorei

Other links:     

Plant  information

Common name:                Bitter Vine

Conservation status:  Least concern

Etymology:   

Flowers:                  

• Trimenia moorei is andromonoecious (male and hermaphrodite flowers are on the same plant) 

Fruit:                         

Leaves:         

Stem & branches: 

Roots:         

Habit:        

• A climbing plant 

Habitat:   

Distribution:                  

• Found in eastern Australia

Additional notes:   

• Pollination

  • Trimenia moorei is an andromonoecious (male and hermaphrodite flowers are on the same plant) liana with > 40% of the total  flower buds maturing as bisexual flowers

  • Male and bisexual flowers are strongly scented with pollen, anther sacs and receptacle scars testing positively for volatile emissions

  • While hover-flies contact the stigma with their probosces, the stigma secretes no free-flowing, edible fluids

  • Copious pollen is the only edible reward consumed by hover-fies and certain bees  

  • Pollen  is also shed directly into the air, permitting wind pollination

  • The bisexual flower buds have a trichome-rich dry-type stigma with an early-acting self-incompatibility system

  • Bicellular pollen grains deposited on stigmas belonging to the same plant germinate but fail to penetrate intercellular spaces, while grains deposited following cross-pollination reach the ovule within 24 h

  • At least 64 % of carpels are cross-pollinated in situ

  • Trimenia moorei is the first species within the ANA group, and second within reilictual-basal angiosperm lineages, to exhibit stigmatic self-incompatibility in combination with dry-type stigma and bicellular pollen, a condition once considered to be atypical for angiosperms as a whole but now known to be present in numerous taxa

Sources of information:

• https://en.wikipedia.org/wiki/Trimenia_moorei (2023)

• The Pollination of Trimenia moorei (Trimeniaceae): Floral Volatiles, Insect/ Wind Pollen Vectors and Stigmatic Self-incompatibility in a Basal Angiosperm

 PETER BERNHARDT, TAMMY SAGE PETER WESTON, HIROSHI AZUMA , MATHEW LAMB , LEONARD B. THIEN and JEREMY BRUHL

• https://apps.des.qld.gov.au/species-search/details/?id=8186 (Feb 2024)