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Species Profile: Water Howellia (Howellia Aquatilis)

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Species Profile: Water Howellia (Howellia Aquatilis) Species Profile for Water howellia (Howellia aquatilis) Page 1 of 4 Environmental Conservation Online System Conserving the Nature of America Enter Search Term(s): Search • ECOS> • Species Profile for Water howellia (Howellia aquatilis) Water howellia (Howellia aquatilis) Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History Taxonomy: View taxonomy in ITIS Search for images on digitalmedia.fws.gov Listing Status: Threatened Where Listed: WHEREVER FOUND General Information Water howellia http://ecos.fws.gov/speciesProfile/profile/speciesProfile.action?spcode=Q2RM 4/9/2015 Species Profile for Water howellia (Howellia aquatilis) Page 2 of 4 (Howellia aquatilis) is a winter annual aquatic plant that grows 4-24 inches high. It has extensively branched, submerged or floating stems and narrow, linear, alternate (sometimes opposite) leaves up to 2 inches in length. Water howellia usually flowers in May and June, with small trumpet-shaped blooms ranging from white to light purple in color, at or above the water surface. There may also be small axillary flowers beneath the water surface. Water howellia reproduces only by seed which germinates when ponds dry during fall. This results in annual variability in population size depending on the extent of the previous season’s drying. Flowering occurs from June to August. The plant grows in areas that were once associated with glacial potholes and former river oxbows that flood in the spring, but usually dry at least partially by late summer. It is often found in shallow water (1-2 meters) and on the edges of deep ponds that are partially surrounded by deciduous trees such as black cottonwood and aspen. States in which Howellia aquatilis is known to occur: Currently known from California, Idaho, Montana, and Washington. Historically found in Oregon. The plant has also been found on Turnbull National Wildlife Refuge in Washington. This species is listed wherever it is found, but • States/US Territories in which the Water howellia is known to or is believed to occur: California , Idaho , Montana , Oregon , Washington • US Counties in which the Water howellia is known to or is believed to occur: View All • USFWS Refuges in which the Water howellia is known to occur: RIDGEFIELD NATIONAL WILDLIFE REFUGE, TURNBULL NATIONAL WILDLIFE REFUGE Current Listing Status Summary Status Date Listed Lead Region Where Listed Threatened 07/14/1994 Mountain-Prairie Region (Region 6) » Federal Register Documents Most Recent Federal Register Documents (Showing 3 of 3) Date Citation Page Title 04-18- Initiation of 5-Year Reviews of Seven Wildlife Species and Two Plant 72 FR 19549 19551 2007 Species in the Mountain-Prairie Region 07-14- ETWP; The Plant, Water Howellia (Howellia Aquatilis), Determined 59 FR 35860 35864 1994 to Be a Threatened Species 04-16- ETWP; Proposed Listing of Water Howellia (Howellia aquatilis) as 58 FR 19795 19800 1993 Threatened » Recovery • Recovery Plan Information Search • Information Search FAQs Current Recovery Plan(s) Date Title Plan Action Status Plan Status http://ecos.fws.gov/speciesProfile/profile/speciesProfile.action?spcode=Q2RM 4/9/2015 Species Profile for Water howellia (Howellia aquatilis) Page 3 of 4 Date Title Plan Action Status Plan Status 09/24/1996 Water Howellia (Howellia aquatilis) Recovery View Implementation Draft Plan, Public and Agency Review Draft Progress Other Recovery Documents (Showing 1 of 1) Date Citation Page Title Document Type Initiation of 5-Year Reviews of Seven Wildlife Species and Two Plant • Notice 5-year Review, 04/18/2007 72 FR 19549 19551 Species in the Mountain-Prairie Initiation Region Five Year Review Date Title 08/30/2013 Water howellia (Howellia aquatilis) 5-Year Review » Critical Habitat No critical habitat rules have been published for the Water howellia. » Conservation Plans No conservation plans have been created for Water howellia » Petitions No petition findings have been published for the Water howellia. » Life History No Life History information has been entered into this system for this species. » 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. ECOS Home | About ECOS | Contact Us http://ecos.fws.gov/speciesProfile/profile/speciesProfile.action?spcode=Q2RM 4/9/2015 Species Profile for Water howellia (Howellia aquatilis) Page 4 of 4 U.S. Fish and Wildlife Service Home Page | Department of the Interior | USA.gov | About the U.S. Fish and Wildlife Service | Accessibility | Privacy | Notices | Disclaimer | FOIA http://ecos.fws.gov/speciesProfile/profile/speciesProfile.action?spcode=Q2RM 4/9/2015.
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