Species: Nymphaea tetragona

Pygmy Water-lily
Species
Plants
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Plants and lichens of Puget Trough

Pygmy Water-lily is an herbaceous perennial with submergent stems and floating leaves arising from a thick rhizome. The leaves have a long, slender petiole attached to the base of a long, v-shaped notch in the elliptic blades that are 7-10 cm long. The bowl-shaped flowers have long, slender stalks and float on the surface of the water. Each flower has 4 light green, narrowly elliptic sepals that are 2-3 cm long and 7-15 white, narrowly lance-shaped petals of the same length. There are 30-45 yellowish stamens, and the stigma is large and saucer-shaped. The fruit is woody and berry-like.

Kingdom
Plantae
Phylum
Anthophyta
Class

Dicotyledoneae

Order

Nymphaeales

Family

Nymphaeaceae

Genus

Nymphaea

Natureserve Explorer
Source:
ELEMENT_GLOBAL.2.130338
Classification
Other Global Common Names
Northern Water-lily - pygmy waterlily
Informal Taxonomy
Plants, Vascular - Flowering Plants - Water-Lily Family
Formal Taxonomy
Plantae - Anthophyta - Dicotyledoneae - Nymphaeales - Nymphaeaceae - Nymphaea - The true Nymphaea tetragona occurs in lower USA only in Washington state, where it was recorded in 1930; otherwise in Canada and Alaska. The true N. tetragona is also apparently rare in Sask., Man., Alta., BC. Remaining reports are N. leibergii (Mont., Idaho, Maine, Mich., Minn., not Alaska or Washington; also BC, Alta., east to Quebec), most common in Ontario. N. tetragona is also in Finland, former Soviet Union, China, Japan, etc.; common in Alaska.

Pygmy Water-lily is an herbaceous perennial with submergent stems and floating leaves arising from a thick rhizome. The leaves have a long, slender petiole attached to the base of a long, v-shaped notch in the elliptic blades that are 7-10 cm long. The bowl-shaped flowers have long, slender stalks and float on the surface of the water. Each flower has 4 light green, narrowly elliptic sepals that are 2-3 cm long and 7-15 white, narrowly lance-shaped petals of the same length. There are 30-45 yellowish stamens, and the stigma is large and saucer-shaped. The fruit is woody and berry-like.

Short General Description
Pygmy water-lily, dwarf water-lily; Water-lily family (Nymphaeaceae). A perennial, herbaceous, rooted, aquatic plant with elliptic, floating leaves that arise directly from the rhizome.
NatureServe Global Status Rank
G5
Global Status Last Reviewed
1995-05-22
Global Status Last Changed
1984-06-11
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.AB=S1&CA.BC=S2&CA.MB=S2&CA.NT=SNR&CA.YT=SNR&US.AK=S3&US.ID=SH&US.MN=SNR&US.RI=SNR&US.WA=SH" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
Nymphaea tetragona is a circumpolar species that occurs sporadically across northern North America and Eurasia. In North America, it occurs from northern Maine and Quebec west to British Columbia and Alaska. In the U.S., it occurs only in Maine, Michigan (Isle Royale), Minnesota, and Montana, and is historical in Idaho and Washington.
ELEMENT_GLOBAL.2.130338