ID	ModifiedOn	Contributors	InformalClassification	Family	TaxonID	TaxonName	SeeAlso	NameRank	Hybrid	TerminalTaxon	Excluded	Peripheral	Waif	Endemic	Extirpated	OriginCode	Origin	Distribution	Voucher	Comments
4979	2018-05-02 22:04:00		Vascular Plants: Monocots	Hydrocharitaceae	128659	Egeria		genus		N	N	N	N	N	N	I	Introduced			
4980	2021-04-14 20:51:48		Vascular Plants: Monocots	Hydrocharitaceae	128661	Egeria densa		species		Y	N	N	N	N	N	I	Introduced from South America	Occurring chiefly west of the Cascades crest in Washington;	{"Herbarium":"WTU"}	FNA22: "Egeria densa is native to southeastern Brazil and has been widely sold in the aquarium trade, often becoming established in nature. Only staminate plants of E. densa have been observed outside its native range. Reproduction, then, occurs entirely by vegetative methods. No differentiated vegetative reproductive structures (turions, bulbils, etc.) are known (C. D. K. Cook and K. Urmi-König 1984b); however, the species is known to live temporarily under ice. The leaves of Egeria densa, which are only two cell-layers thick, are much used to demonstrate plant-cell structure and cytoplasmic streaming in introductory botany courses."
4981	2018-05-02 22:04:00		Vascular Plants: Monocots	Hydrocharitaceae	128665	Elodea	Egeria	genus		N	N	N	N	N	N	N	Native			
4982	2021-04-14 21:23:49		Vascular Plants: Monocots	Hydrocharitaceae	128676	Elodea canadensis		species		Y	N	N	N	N	N	N	Native	Occurring on both sides of the Cascades crest in Washington;	{"Herbarium":"WTU"}	
4983	2020-06-05 11:09:22		Vascular Plants: Monocots	Hydrocharitaceae	128687	Elodea nuttallii		species		Y	N	N	N	N	N	N	Native	Occurring on both sides of the Cascades crest in Washington;	{"Herbarium":"WTU"}	
4984	2018-05-02 22:04:00		Vascular Plants: Monocots	Hydrocharitaceae	128710	Hydrilla		genus		N	N	N	N	N	N	I	Introduced			
4985	2021-04-16 20:43:45		Vascular Plants: Monocots	Hydrocharitaceae	128712	Hydrilla verticillata		species		Y	N	N	N	N	N	I	Introduced from Eurasia	Occurring west of the Cascades crest in Washington, where known only from King County;	{"Herbarium":"WTU"}	FNA22: "Hydrilla verticillata is widely distributed in the Eastern Hemisphere but it is uncertain as to where it is truly native. It grows in a variety of aquatic habitats ranging from acidic to basic, oligotrophic to eutrophic, fresh to brackish, and from a few centimeters to a meter or more if light penetrates that deeply. Growth and spread often are rapid. Stem fragments become rooted by fine, unbranched adventitious roots and soon produce vegetative reproductive structures from both subterranean and erect stems. Tubers produced on subterranean stems are pale brown; those produced on erect stems are dark olive-green and covered with short, stiff scales. Both types germinate quickly to produce new stems."
4986	2018-05-02 22:04:00		Vascular Plants: Monocots	Hydrocharitaceae	128714	Hydrocharis		genus		N	N	N	Y	N	N	I	Introduced			
4987	2021-04-16 20:48:17		Vascular Plants: Monocots	Hydrocharitaceae	128715	Hydrocharis morsus-ranae		species		Y	N	N	Y	N	N	I	Introduced from Eurasia	Occurring west of the Cascades crest in Washington, where known from Snohomish County;	{"Herbarium":"WTU"}	Known from Meadow Lake in Snohomish County.
4988	2003-10-21 00:00:00	Peter F. Zika	Vascular Plants: Monocots	Hydrocharitaceae	128717	Hydrocharitaceae		family		N	N	N	N	N	N	N	Native			FNA editors insisted on following Cronquist (1981) in recognizing Najadaceae, and the author's introduction to Najadaceae in FNA (Haynes 2000) protested Cronquist's treatment was outdated, citing recent papers investigating seed coat (Shaffer-Fehre 1991) and molecular relationships (Les & Haynes 1995). That evidence places Najadaceae within Hydrocharitaceae. Here we combine the two, as in JPM.
4989	2018-05-02 22:04:00		Vascular Plants: Monocots	Hydrocharitaceae	128721	Limnobium		genus		N	N	N	Y	N	N	I	Introduced			
4990	2021-04-16 20:51:53		Vascular Plants: Monocots	Hydrocharitaceae	128724	Limnobium laevigatum		species		Y	N	N	Y	N	N	I	Introduced from the Carribean and South America	Known from Pacific County in Washington;	{"Herbarium":"WTU"}	Recently (2016) collected in Pacific County.
4991	2018-05-02 22:04:00		Vascular Plants: Monocots	Hydrocharitaceae	128734	Najas		genus		N	N	N	N	N	N	N	Native			
4992	2021-05-04 06:56:29		Vascular Plants: Monocots	Hydrocharitaceae	128736	Najas canadensis		species		Y	N	N	N	N	N	N	Native	Occurring on both sides of the Cascades crest in Washington;	{"Herbarium":"WTU"}	Rather cryptic taxon for which historic and contemporary collections have been made.
4993	2021-05-04 07:12:12		Vascular Plants: Monocots	Hydrocharitaceae	128742	Najas flexilis		species		Y	N	N	N	N	N	N	Native	Occurring on both sides of the Cascades crest in Washington;	{"Herbarium":"WTU"}	FNA22: "In habit, Najas flexilis is most similar to N. guadalupensis. When seeds are present, N. flexilis can be separated easily from the latter species by the glossy, smooth, yellowish seeds that are widest above the middle. In the northern United States and in Canada, N. flexilis is by far the most common species of Najas, although in the Ohio and surrounding areas, it is disappearing as eutrophication (depletion of oxygen from lakes) continues (W. A. Wentz and R. L. Stuckey 1971)."
4994	2021-05-04 07:17:14		Vascular Plants: Monocots	Hydrocharitaceae	128752	Najas guadalupensis		species		N	N	N	N	N	N	N	Native	Occurring west of the Cascades crest in Washington;	{"Herbarium":"WTU"}	
4995	2021-05-04 07:21:40		Vascular Plants: Monocots	Hydrocharitaceae	128755	Najas guadalupensis ssp. guadalupensis		infraspecies		Y	N	N	N	N	N	N	Native	Occurring west of the Cascades crest in Washington;	{"Herbarium":"WTU"}	We follow FNA in accepting the subspecies, but they seem poorly defined along arbitrary size diffences in the seeds, stems, and leaves.
4996	2018-05-02 22:04:00		Vascular Plants: Monocots	Hydrocharitaceae	128785	Vallisneria		genus		N	N	N	N	N	N	I	Introduced			
4997	2021-05-04 07:27:47		Vascular Plants: Monocots	Hydrocharitaceae	128786	Vallisneria americana		species		Y	N	N	N	N	N	I	Introduced from eastern North America	Occurring chiefly west of the Cascades crest in Washington;	{"Herbarium":"WTU"}	FNA22: "Vallisneria americana plus various species of Sagittaria, Sparganium, and Blyxa aubertii form usually sterile basal rosettes of long, linear leaves in shallow water in North America. Vallisneria can easily be separated from the others by the following combination of char acter states: base of leaves nearly flat in cross section, broad band of lacunae along each side of midvein, roots without cross septa, and absence of milky juice. The three other genera have a different combinations for these characters.<br><br>Vallisneria spiralis Linnaeus has been reported in some of the older literature as being represented in North America. These reports are all based on a misapplication of the name V. spiralis and are actually V. americana. In warmer waters of southeastern United States are some populations of Vallisneria with much larger leaves that have been given the name V. neotropicalis. After considerable study of populations in the field, the plants formerly known as V. neotropicalis were determined to be just larger individuals of V. americana (R. M. Lowden 1982)."
