Jared Gage Smith

Helanthium tenellum, the pygmy chain sword, is a species of plants in the Alismataceae. It is native to the eastern United States (from Texas to Florida, north to Michigan and Massachusetts), southern Mexico (Chiapas, Veracruz), West Indies (Cuba, Jamaica, Hispaniola), Central America, South America (from Guyana to Argentina)

Helanthium is a genus of plants in the Alismataceae, native to the Western Hemisphere. At present (May 2014), three species are recognized: Helanthium bolivianum (Rusby) Lehtonen & Myllys - southern Mexico, West Indies, Central America, South America Helanthium tenellum (Mart. ex Schult.f.) J.G.Sm. in N.L.Britton - eastern United States (from Texas to Florida, north to Michigan and Massachusetts), southern Mexico, West Indies, Central America, South America Helanthium zombiense (Jérémie) Lehtonen & Myllys - Jamaica, Island of Guadeloupe

Sagittaria platyphylla, the delta arrowhead, broad-leaf arrowhead or delta duck-potato, is a plant species native to the eastern United States.

Sagittaria longiloba is a North American species of flowering plant in the water plantain family known by the common name longbarb arrowhead and Gregg arrowhead.

Sagittaria isoetiformis, common name quillwort arrowhead, is an aquatic plant species. It is similar to Sagittaria tenuis and often mistaken for it, but S. isoetiformis has flattened leaves rather than leaves round in cross-section. Leaves of both species are usually submerged but sometimes emerging from the water. The plant is native to Cuba and to the southeastern United States (Florida, Alabama, Mississippi, Georgia, North Carolina and South Carolina).

Sagittaria engelmanniana (Engelmann's arrowhead or acid-water arrowhead) is a perennial aquatic plant growing up to 70 centimetres (28 inches) tall. The leaves are sagittate (arrow-shaped) with 3 very narrow lobes. The species is native to eastern North America. It has been reported from every state bordering on the Gulf of Mexico or on the Atlantic Ocean from Mississippi to Massachusetts, plus Vermont and Ontario. It occurs in wetlands, predominantly those with acidic water such as Sphagnum bogs.

Sagittaria filiformis, the threadleaf arrowhead, is a perennial aquatic plant growing up to 170 centimetres (67 inches) tall. Some leaves are thread-like, entirely underwater, but others are narrowly ovate or lanceolate and floating on the surface. The species is native to the eastern United States, from Maine south to Florida and Alabama. It occurs in flowing streams in the northern part of its range, but more stagnant waters such as marshes and swamps in the South.

Sagittaria demersa, commonly called Chihuahuan arrowhead, is an annual aquatic plant growing up to 60 centimetres (24 inches) tall. The leaves are flat, very long and narrow, up to 55 cm (22 in) long but rarely more than 7 millimetres (1⁄4 in) across. The species is native to north-central Mexico (Chihuahua, Durango. Hidalgo, Aguascalientes, Jalisco and Querétaro) and also from a few sites in the northern part of the US State of New Mexico (Mora and Colfax Counties). The plant occurs mostly submerged in streams and lakes.

Sagittaria macrocarpa, commonly called the large-fruited arrowhead, is an aquatic plant species known only from the US states of North Carolina and South Carolina.

Sagittaria ambigua, the Kansas arrowhead, is an aquatic plant species native to North America. It is a perennial herb growing up to 90 centimetres (3 feet) tall. The leaves are broadly lanceolate, the blade up to 20 cm (8 in) long and 12 cm (4+1⁄2 in) wide. It can be found in the central United States (Indiana, Illinois, Arkansas, Missouri, Kansas and Oklahoma) growing in wet areas, mostly along the shores of ponds and waterways.

Zephyranthes pulchella, the showy zephyrlily, is a perennial species of flowering plant in the family Amaryllidaceae. It is found from Texas to northeast Mexico at elevations of 0 to 400 meters from sea level.

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Sagittaria australis, the Appalachian arrowhead or longbeak arrowhead, is a plant found in North America. It is a perennial herb up to 130 centimetres (51 inches) tall. It is an unusual Sagittaria species in that it has a five-winged petiole. The flowers are up to 3 cm (1 in) in diameter, white, producing an achene with a recurved beak. The species is native to much of the eastern United States, from Louisiana to Iowa to New York State to Florida, mostly between New Jersey and Mississippi with scattered locations elsewhere in the range. It is an emergent aquatic plant, growing in swamps and

Hordeum depressum is a species of barley known by the common names low barley and dwarf barley. It is native to the western United States from Idaho to California, where it can be found in moist habitats such as vernal pools. This is a small annual grass forming petite patches of thin, hairy leaves and erect stems to half a meter in maximum height. The green or reddish green inflorescence is 2 to 6 centimeters long and about half a centimeter wide. Like other barleys the spikelets come in triplets. There is a large fertile central spikelet about a centimeter long and two smaller, often

Elymus lanceolatus is a species of grass known by the common names thickspike wheatgrass and streamside wheatgrass. It is native to North America, where it is widespread and abundant in much of Canada and the western and central United States. There are two subspecies, subsp. lanceolatus occurring throughout the species' range and subsp. psammophilus occurring in the Great Lakes region. Elymus lanceolatus subsp. lanceolatus is a perennial, rhizomatous grass. It has a moderate growth rate and is shade intolerant. It is available commercially.

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Elymus multisetus is a species of wild rye known by the common name big squirreltail.

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