Preissia quadrata

Preissia quadrata: for more photos, see Sitka Nature Photo Gallery for Preissia quadrata

Preissia quadrata: So far found in two very different locations near the Sitka road system. It grows under a small overhang on a cliff with a waterfall flowing over it, a very wet microhabitat. It has also been found at 4000 feet on Bear Mountain at the base of a rocky outcrop.

Local Notes

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References

Weblinks

• PacNW Herbaria Records for Preissia quadrata
• Search Arctos Database for Preissia quadrata (Southeast only)
• Search Arctos Database for Preissia quadrata (entire database)
• Encyclopedia of Life search for Preissia quadrata
• iNaturalist Observations for Preissia quadrata in Southeast Alaska

Other References

Ian Worley

Southeastern Alaska Distribution: Throughout and often abundant.
Habitat: Mostly on basic substrates, usually on sterile soils at the bases of boulders, cliffs and rock outcrops. Sometimes in canyons or gorges. Frequent on recent tills in Glacier Bay. Although in exposed, highly insolated and well drained sites, the plants are most frequent in semi-”protected” micro-habitats. From sea level to the subalpine, perhaps into the alpine.
Comments: Sporophytes are frequent.

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Related Files

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  Preissia quadrata with sporophyte

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  Worley's map of Preissia quadrata collections

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