No common name (Schiedea laui)

Listing Status: Endangered

Where Listed: WHEREVER FOUND

General Information

Schiedea laui is an upright to strongly ascending (sloping or leading upward) subshrub that is 5 to 15 dm (1.6 to 4.9 ft) tall. The stems are many-branched and glabrous (free from hair) except for the bracts (a modified leaf or scale) and sepals (each of the parts of the calyx of a flower, enclosing the petal). The internodes (a part of a plant stem between two of the nodes from which leaves emerge) are lightly purple-tinged. The leaves are opposite, narrowly ovate (oval shape, like an egg) or lanceolate (of a narrow oval shape tapering to a point at each end) to narrowly or broadly elliptic, dull green and sometimes purple-tinged. The petioles (the stalk that joins a leaf to a stem) are 0.5 to 1.1 cm (0.2 to 0.4 in) long. The inflorescences are terminal containing 10 to 18 flowers. The flowers are hermaphroditic (also known as "perfect", which means that each flower contains both male and female structures) and cleistogamous (flowers that do not open and are self-pollinated). The sepals are narrowly lanceolate, 4.0 to 4.5 mm (0.16 to 0.18 in) long, and green to sometimes purple-tinged or nearly purple throughout. The nectary base is obsolete. The capsules are narrowly ovoid (egg-shaped, with the axis widest below the middle) and approximately 4.0 to 4.5 mm (0.16 to 0.18 in) long. The seeds are orbicular-reniform (having the shape of a flat ring or disk-kidney-shaped) and approximately 1 mm (0.04 in) long. Schiedea laui is most similar in morphology to S. nuttallii differing by the presence of cleistogamous flowers and occurring at higher elevations in wet forest habitats, rather than mesic forests. Schiedea laui also does not share any unique synapomorphies (a characteristic present in an ancestral species and shared exclusively by its evolutionary descendants) with S. nuttallii.
Current Listing Status Summary

» Range Information

Current Range
Last Updated: 01-25-2022 - Wherever found
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  • Wherever found

    Listing status: Endangered

    • States/US Territories in which this population is known to or is believed to occur: Hawaii
    • US Counties in which this population is known to or is believed to occur: View All
    • USFWS Refuges in which this population is known to occur: 

» Candidate Information

No Candidate information available for this species.

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No Candidate Notice of Review Documents currently available for this species.

No Uplisting Documents currently available for this species.

» Federal Register Documents

Federal Register Documents

» Species Status Assessments (SSAs)

Species Status Assessments (SSAs)

No Species Status Assessments (SSA's) are currently available for this species.

Special Rule Publications

No Special Rule Publications currently available for this species.

» Conservation Plans

No Conservation Plans currently available for this species.

» Petitions

No Petitions currently available for this species.

» Biological Opinions

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» Life History

Habitat Requirements

Schiedea laui is an endemic species that is found on the windward areas of east Molokai. This species is found between the elevations of 1,097 to 1,146 m (3,599 to 3,760 ft) growing near stream banks and inside and outside of caves. The habitat is categorized as native wet forest. Associated native species include Asplenium spp., Dryopteris sandwicensis, Vandenboschia davallioides, Cyrtandra spp., Hymenasplenium unilaterale, Hydrangea arguta, Coprosma sp., Cyanea solenocalyx, Dicranopteris linearis (uluhe), Cibotium glaucum (hapuu), Machaerina sp., Sadleria sp., and Freycinetia arborea (ieie).

Movement / Home Range

Schiedea laui historically occurred on the island of Molokai. Currently, it occurs in the Kamakou Preserve on Molokai.

Reproductive Strategy

The flowering periods for Schiedea laui are between November to January and in the months of May, June, and September. Fruits have been observed on the plants during the months of January and August to October. The breeding system of Schiedea laui is hermaphroditic (plants containing perfect flowers, each of which has both male and female reproductive organs; species is capable of both sexual and vegetative reproduction) and obligate autogamy through cleistogamy (Wagner et al. 2005, p. 2). Obligate autogamy means that S. laui is restricted to self-fertilization (flowers are self-pollinated). Cleistogamy refers to plants that produce flowers that do not open, which are developed specifically by self-pollinated flowers and does not support outcrossing (Lloyd and Schoen 1992, p. 359). Schiedea laui produces seeds via self-fertilization and is not dependent on birds or insects for pollination.

Other

This species was first observed in 1998 in the montane wet ecosystem in Kamakou Preserve.

» Other Resources

NatureServe Explorer Species Reports-- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports-- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video." +

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