Kolea (Myrsine fosbergii)

Listing Status: Endangered

Where Listed: WHEREVER FOUND

General Information

Myrsine fosbergii (kolea), a member of the Primulaceae (primrose) family, is a branched shrub or small tree measuring 2 to 4 m (6 to 13 ft) tall. The branches are dark reddish brown with clusters of leaves near the tip of each branch. The leaves are predominantly dark green with a dark purple base, and measure 8 to 13 cm (3 to 5 in) long and 1 to 3 cm (0.4 to 1 in) wide, giving them a narrow, elliptical shape. Flowers are perfect or possibly unisexual (and then plants dioecious), 4 to 8 bracteolate bundled and arising on short woody knobs among the leaves. Pedicels 5 to 8 mm (0.02 to 0.03 in) long and sparsely puberulent or glabrous. Calyx lobes are 0.9 to 1.2 mm (0.03 to 0.04 in) long, glabrous, with margins ciliate. Petals are oblanceolate, 2.8 to 3.5 mm (0.01 in) long with margins ciliate. Anthers are ca. 2 mm (0.01 in) long, apex with a small tuft of hairs and stigma shaped in a head. Drupes are purplish black, globose, ca. 6 to 9 mm (0.02 to 0.03 in) diameter.
Current Listing Status Summary

» Range Information

Current Range
Last Updated: 07-06-2021 - 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.

No Candidate Assessments available for this species.

Candidate Notice of Review Documents

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

» Biological Opinions

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» Life History

Habitat Requirements

Typical habitat for Myrsine fosbergii includes dense to open forest canopies at 292 to 1453 m (962 to 4767 ft) in Metrosideros–Dicranopteris (ohia–uluhe) forest in the Koolau mountains on Oahu and Metrosideros polymorpha (ohia)–Diospyros sandwicensis (lama) lowland mesic forest and M. polymorpha–Cheirodendron spp. (olapa) montane wet forest from the Wahiawa mountains and drainage, Kawaiula Valley, Limahuli Valley, Namolokama, Kalalau, Hanakapiai, and Haupu mountains on Kauai. Associated native plant species include Antidesma spp. (hame), Cheirodendron spp. (olapa), Diospyros spp. (lama), Perrottetia sandwicensis (olomea), and Syzygium sandwicense (ohia ha). There are known differences in elevation, average rainfall, and slope between populations of Myrsine fosbergii. Myrsine fosbergii often occurs along watercourses and at summit ridges where rainfall is most frequent, which may suggest a dependency on wetter habitats or habitats where water may be more readily available.

Movement / Home Range

Historically, Myrsine fosbergii occurred in the Koolau mountains of Oahu. Currently, there are five populations on both Kauai and Oahu.

Reproductive Strategy

Flowers are perfect or possibly unisexual (dioecious). Pollination and seed dispersal of Myrsine fosbergii are unknown, but colonizing species in this lineage are presumably pollinated by insects and dispersed by forest birds. Myrsine fosbergii has been reported flowering and fruiting in February, April, May, and August.

Other

Myrsine fosbergii shares habitat and also hybridizes with other Myrsine broad-leaved species, for example, with M. degeneri or M. lessertiana. On Oahu, possible hybrids are present, but no confirmed hybrids have been identified on Kauai. Identifying hybrids can be difficult at different life stages, and the number of hybrid individuals may actually be higher than estimated on Oahu and Kauai.

» 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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