ID	ModifiedOn	Contributors	InformalClassification	Family	TaxonID	TaxonName	SeeAlso	NameRank	Hybrid	TerminalTaxon	Excluded	Peripheral	Waif	Endemic	Extirpated	OriginCode	Origin	Distribution	Voucher	Comments
169	2018-05-02 22:04:00		Vascular Plants: Ferns and Lycophytes	Salviniaceae	34048	Azolla		genus		N	N	N	N	N	N	N	Native			
170	2023-10-08 11:42:59		Vascular Plants: Ferns and Lycophytes	Salviniaceae	34055	Azolla filiculoides		species		Y	N	N	N	N	N	N	Native	Occurring on both sides of the Cascades crest in Washington;	{"Herbarium":"WTU"}	FNA2: "<i>Azolla filiculoides</i> is cold tolerant, surviving even in fragmented parts under thin ice. It usually reaches a climax population in late spring, becomes fertile, collapses, and is replaced by other more heat-tolerant aquatics such as <i>Lemna spp</i>. Hybrids between this species (male) and <i>A . microphylla</i> Kaulfuss (female), a species of Central America, South America, and the West Indies, have been reported (Do V. C. et al. 1989). "
171	2020-05-05 19:49:16		Vascular Plants: Ferns and Lycophytes	Salviniaceae	34058	Azolla microphylla		species		Y	N	N	N	N	N	N	Native	Occurring on both sides of the Cascades crest in Washington;	{"Herbarium":"WTU"}	KZ99 gives authorities as Schlecht. & Cham. ex K. Presl, here we follow H&C and FNA Vol. 2.<br><br>FNA2: "Azolla mexicana is generally less cold tolerant and has a narrower environmental range than A . caroliniana . Both species are closely related and are similar vegetatively in culture. In the western United States, A . mexicana is often fertile."
172	2012-09-04 15:54:00	Peter F. Zika	Vascular Plants: Ferns and Lycophytes	Salviniaceae	34068	Salviniaceae		family		N	N	N	N	N	N	N	Native			FNA2: "Agriculturally, Azolla is famous for its symbiosis with the nitrogen-fixing Anabaena azollae Strasburger, a cyanobacterium (blue-green alga) found at the stem apices, beneath indusia, and in cavities of the upper leaf lobes. Because the plants fix nitrogen, they are often used as a green fertilizer or mixed with livestock feed as a nutritional supplement. Azolla pinnata has been cultivated for many centuries in rice paddies of northern Vietnam and southeastern China, where it acts as a fertilizer after it decomposes.<br><br>Azolla is the most frequently studied genus of ferns in the world because of its economic importance. The three North American species are naturalized in Europe and South Africa, and they have been introduced into Hawaii for horticulture and into Asia for agriculture. All species have been studied for agricultural uses in rice-producing areas.<br><br>Azolla is usually found in stagnant or slow-moving water of ponds, lakes, marshes, swamps, and streams. Plants turn reddish when under stress, such as from poor nutrition, salinity, or high temperatures. Sporulation needs further investigation."
