PlantNET Home DONATE TODAY | PlantNET Home | Search NSW Flora | Contact Us  
FloraOnline
Introduction
Plant Name Search
Index Search
Spatial Search
Identification Keys
Classification
Glossary
WeedAlert
Telopea Journal
Other Data Sources
NEW SOUTH WALES FLORA ONLINE Printable Page

Family Tetrachondraceae

Description: Small perennial herbs, mat-forming to upright, terrestrial, subaquatic or aquatic.

Leaves opposite, subsessile; stipules interpetiolar, joining bases of opposite leaves; lamina linear (Polypremum) to broadly ovate (Tetrachondra).

Flowers mostly solitary or in leafy cymes, actinomorphic, calyx, corolla and stamens 4-merous, with calyx and corolla connate at base. Calyx campanulate, persistent; lobes narrowly ovate, with apex more or less obtuse. Corolla white, tube subrotate to campanulate. Stamens alternate with corolla lobes, inserted on corolla; anthers antrorse, dorsifixed. Gynoecium consisting of 2 joined carpels; ovary semi-inferior (Polypremum) and style terminal or superior (Tetrachondra) and style gynobasic; stigma slightly truncate to capitate.

Fruit a 2-valved capsule or reduced to 4 separate mericarps.


Distribution and occurrence: Introduced to North Coast (N.S.W.) and Queensland. Natural to SE U.S.A., S. America and New Zealand.

External links:
Angiosperm Phylogeny Website (Family: Tetrachondraceae, Order: Lamiales)
Wikipedia

Text by B.J. Conn (2006)
Taxon concept: B.J. Conn (2006)

One genus in NSW: Polypremum

  Privacy | Copyright | Disclaimer | About PlantNET | Cite PlantNET