Listera australis

Range:

Habitat: terrestrial in moist pinelands and moist hardwood forests.
Common name: Southern Twayblade
Blooming: February through May
Comments: this terrestrial orchid is probably more common than the vouchered specimen map above would suggest, but it is so small as to be easily overlooked in the moist woodlands that it calls home, found in both moist pinelands and moist hardwood forests. The plant is seldom more than three inches (7.5 cm) tall, with a pair of leaves seldom more than a half-inch (1.2 cm) long. If you are fortunate to find a plant, don't look away, lest you spend another five to ten minutes relocating it. Seedlings consist of only the stem and the pair of leaves, while mature plants will have a flower stem arising from between these leaves. The flowers are a wonder of miniaturization, with petals and sepals only about 1 mm long. The forked lip is by far the most conspicuous part of the flower, reaching lengths of a half-inch (1.2 cm) or so.

The specific epithet australis means "southern", but this is somewhat of a misnomer with this species, which ranges from Newfoundland down to central Florida.


Photographs:
Listera australis
Listera australis - mature plant with a number of seedlings.
Listera australis
flower detail from first photo.

Listera australis

Listera australis - plant with several developing seed pods. Note the small insect alighting on the leaf.

Listera australis - flower detail from second photograph.


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