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Genus Heterozostera Family Zosteraceae

Description: Spreading rhizomatous submerged perennial; stems erect, deciduous, unbranched, both fertile and vegetative stems present.

Leaves distichous; blade linear; sheath open, more persistent than blade.

Inflorescence superficially similar to vegetative shoot, a racemose or rarely paniculate arrangement of spatheate 1-sided spadices. Spadix enclosed in the spathe; axis flattened, thickened. Flowers unisexual, naked, arranged alternately in 2 rows; retinacula membranous, 1 on the margin of the spadix axis adjacent to each male flower.


Distribution and occurrence: World: 4 species, Australia & Chile. Australia: 3 species (native).

Perhaps better included in Zostera - needs further study - see Jacobs and Les (2009) Telopea 12: 419-423.

Text by S. W. L. Jacobs (1993); edited KL Wilson (Feb 2013)
Taxon concept:

One species in NSW: Heterozostera nigricaulis

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