No common name (Phyllostegia pilosa)

Listing Status: Endangered

Where Listed: WHEREVER FOUND

General Information

Phyllostegia pilosa is a scandent vine or herb in the Lamiaceae (mint) family. Stems are moderately short-haired. Leaves are ovate to elliptic-ovate, 3 to 14 cm (1.2 to 5.5 in) long, 3 to 4.5 cm (1.2 to 1.8 in) wide, lower surface glandular-dotted with short hairs, densely so along veins. Flowers are 6 to 12 per pair of inflorescences that are 7 to 12 cm (2.8 to 4.7 in) long, also with short hairs. The corolla tube is slender and curved, 7.3 to 10 mm long (0.3 to 0.4 in) and lower flower lip is 3.5 to 5.5 mm (0.1 to 0.2 in) long. Fruit not described.
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.

No Candidate Assessments available for this species.

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

To see all FWS Issued Biological Opinions please visit the BO Report.

» Life History

Habitat Requirements

Phyllostegia pilosa was documented from Kamoku Flats (montane wet) and the Mooloa (lowland mesic) areas on Molokai. It occurred on east Maui in the montane wet ecosystem. Dominant native plants in these ecosystems include Metrosideros polymorpha (ohia)-Acacia koa (koa)-Cheirodendron trigynum (olapa) with the associated native plant species Alyxia stellata (maile), Athyrium microphyllum (akolea), Carex alligata, Clermontia arborescens (oha wai nui), Coprosma spp. (pilo), Diplazium sandwichianum (hoio), Dryopteris glabra (kilau), D. wallichiana (io nui), Hydrangea arguta (kanawao), Leptecophylla tameiameiae (pukiawe), Peperomia cookiana (alaala wai nui), Rubus hawaiensis (akala), and Sticherus owhyhensis (uluhe).

Movement / Home Range

Phyllostegia pilosa is known from small areas on east Maui and central Molokai. However, it has not been observed on Molokai since the early 1900s and is considered extirpated from that island. Currently, there are no known wild plants on Maui.

Reproductive Strategy

The fragrant flowers of Hawaiian Phyllostegia have prominent lower-lipped, mostly white pink-colored corollas, associated with insect pollination. Phyllostegia pilosa has been observed flowering in February and April and fruiting between April and June. Members of the taxon in Hawaii have well-developed fleshy fruits, a feature commonly found in plants requiring birds for dispersal.

Other

Phyllostegia pilosa was first described by St. John (1987) from a collection by Rock on Maui in 1912. Phyllostegia pilosa was included within P. mollis by Wagner et al. (1990). Wagner later examined an isotype of P. haliakalae (also split from P. mollis) and found it actually represented the species P. imminuta. Thus, Wagner (1999) selected P. pilosa for this representative, as it differs from P. mollis in many characteristics: by the greater number of flowers per pair of inflorescences and closer spacing of such, shorter flower stalks, smaller flowers and leaves, and shorter leaf stalks.

» 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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