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 Zannichelliaceae

Synonyms: Zannichelliaceae APNI*

Description: Aquatic perennials or annuals, often rhizomatous; stems erect, floating or creeping, often producing buds specialized for vegetative reproduction (turions).

Leaves alternate or opposite, simple, submerged and/or floating; if both present then leaves usually dimorphic.

Inflorescence a mostly emergent pedunculate spike 2- or several–many-flowered, the peduncle sometimes becoming spiral in fruit. Flowers actinomorphic, 2-merous, bisexual. Perianth absent or segments 4, sometimes interpreted as a connective outgrowth. Stamens 2 or 4; anthers 2-locular, extrorse, dehiscing by longitudinal slits. Ovary superior, carpels 2–19, free or partly fused, the basal stipe sometimes elongating in fruit.

Fruit a nutlet or drupelet [or rarely a berry].


Distribution and occurrence: World: 3 genera, 100 species, cosmopolitan. Australia: 2 genera, c. 12 species, all States.

External links:
Angiosperm Phylogeny Website (Family: Potamogetonaceae, Order: Alismatales)
Wikipedia

Text by S. W. L. Jacobs & S. Papassotiriou (1993); edited KL Wilson (June 2010)
Taxon concept:

 Key to the genera 
1Ligule longer than the sheath; leaves usually opposite; female flower with cup-like perianthZannichellia
Ligule shorter than the sheath; leaves mostly alternate but leaves subtending flowers may be opposite; female flowers with 3 distinct perianth segmentsLepilaena

  Privacy | Copyright | Disclaimer | About PlantNET | Cite PlantNET