Ho`awa (Pittosporum napaliense)
Taxonomy:
View taxonomy in ITISListing Status: Endangered
Where Listed: WHEREVER FOUND
General Information
Pittosporum napaliense, a member of the Pittosporaceae (pittosporum) family, is a small tree 5 to 11 m (16 to 36 ft) tall with young parts and inflorescences covered in pale brown pubescence. The glabrous (smooth) leaves are obovate with entire margins and slightly impressed veins on the upper surface. The cream colored, tubular flowers are unisexual and occur in groups of 8 to 20 in axillary or terminal inflorescences. Capsules are oblong-ovoid, 17 to 19 mm (0.7 in) long, and glabrous at maturity. Seeds are black to reddish-black, 5 to 7 mm long (0.2 to 0.3 in).» Range Information
Current Range
Current range maps are only shown within the jurisdictional boundaries of the United States of America. The species may also occur outside this region.
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 Uplisting Documents currently available for this species.
» Federal Register Documents
» Species Status Assessments (SSAs)
No Species Status Assessments (SSA's) are currently available for this species.
No Special Rule Publications currently available for this species.
» Recovery
- Species with Recovery Documents Data Explorer
- Recovery Priority Number: 2
No Delisting Documents currently available for this species.
» Critical Habitat
To learn more about critical habitat please see https://ecos.fws.gov/crithab
» Conservation Plans
No Conservation Plans currently available for this species.
» Petitions
» Biological Opinions
To see all FWS Issued Biological Opinions please visit the BO Report.
» Life History
Habitat Requirements
Pittosporum napaliense occurs in Pandanus tectorius (hala) and Diospyros sandwicensis (lama)-Metrosideros spp. (ohia) lowland mesic forest, at 122 to 640 m (400 to 2,100 ft). Associated native species include Alyxia stellata (maile), Chrysodracon spp. (hala pepe), Elaeocarpus bifidus (kalia), Freycinetia arborea (ie ie), Nestigis sandwicensis (olopua), Ochrosia kauaiensis (holei), Pritchardia napaliensis (loulu), Psychotria spp. (kopiko), Psydrax odorata (alahee), Rauvolfia sandwicensis (hao), Scaevola taccada (naupaka), and Xylosma hawaiiense (maua).
Movement / Home Range
Historically, Pittosporum napaliense was known from northwestern Kauai. Currently, this species occurs at Waiahuakua Valley, Hoolulu Valley, upper Kalalau Valley, with some individuals also observed at Hanakapiai below Pohakea, and in Limahuli Valley.
Reproductive Strategy
Most Hawaiian species of Pittosporum have functionally unisexual flowers. Pittosporum napaliense has been observed flowering in January, April, June, July, October, and November.
Other
Pittosporum napaliense may hybridize with P, kauaiense and P. glabrum in Limahuli Valley.
» 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." +