Giant Sword Fern Sori
by Paul Rebmann
Title
Giant Sword Fern Sori
Artist
Paul Rebmann
Medium
Photograph - Photograph
Description
A close-up image of a giant sword fern in the Fakahatchee Strand showing the sori on the underside of the pinnae.
This image has been featured in the following groups:
All Natural Beauty Of This World
This is a large fern of South Florida swamps and wet hammocks from Lake Okeechobee southward, excluding the Keys, also occurring in Highlands County. The range includes Louisiana, Hawaii, Puerto Rico and the Virgin Islands.
Living up to its name, giant sword fern grows up to head height and forms clumps, also sometimes epiphytic in cypress and pop ash swamps. The fronds can be from .35 - 2 m (14 in. to 6-1/2 ft.) tall and 3-35 cm (1-14 in.) wide. The petiole is from 15-55 cm (6-22 in.) long and sparsely to moderately covered with reddish to light brown hair-like scales. The rachis is pale to dark brown, also with moderately spaced scales with the pinnae spaced up to 3.5 cm (1-1/3 in.) apart. The pinnae of Nephrolepis biserrata are oblong to narrowly deltate with a small lobe on both sides at the base. These auricles are sometimes inconspicuous. The sori are contained in circular to horseshoe shaped indusia along the underside margin of the pinnae.
(Subject description from the artist's Wild Florida Photo website www.wildflphoto.com)
Uploaded
August 2nd, 2014
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