, Sagittaria montevidensis

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Sagittaria montevidensis is a species of flowering plant in the water-plantain family Alismataceae. Common names include giant arrowhead and California arrowhead. Sagittaria montevidensis is widespread in wetlands of North America (United States, Canada, Mexico) and South America (Brazil, Bolivia, Ecuador, Peru, Argentina, Chile, Paraguay, Uruguay). In North America, the distribution is disjunct, primarily in a wide area from West Virginia to Texas to South Dakota, but with isolated occurrences in New Brunswick, Maine, Connecticut, New York, New Jersey, California, Florida and Alabama It is reportedly naturalized in Spain, Tanzania, and the Island of Java in Indonesia. Habitat. It grows preferentially at the edges of ponds, in shallow and often only temporarily existing waters. Subspecies. Sagittaria montevidensis subsp. calycina (Engelm. ) Bogin (syn. Sagittaria calycina Engelm. ) - United States, MexicoSagittaria montevidensis subsp. montevidensis - South AmericaSagittaria montevidensis subsp. spongiosa (syn. Sagittaria calycina var. spongiosa Engelm. , Lophotocarpus spongiosus (Engelm. ) J. G. Sm. ) - Mid-Atlantic and Northeastern United States, New Brunswick in CanadaSagittaria montevidensis is a robust, stemless, rhizomatous, aquatic plant. The young ribbon-like leaves grow submerged, while the leaves of older plants emerge above the water surface. The leaves are sagitatte and glabrous, up to 28 centimeters long and 23 centimeters wide. Its terete, spongy petioles may reach a length of more than 0. 75 m (2. 5 ft) and are up to 3 inches thick. Inflorescences are typically shorter than the leaves and decumbent. Flowers are in whorls or pairs at nodes and have a diameter of two to three centimeters. . They have three petals, each of which is white with a striking wine-colored stain, and three green sepals. The thick pedicels are as long as 5 cm (2. 0 in). Flowering occurs from June to September.

Plant Description

Plant Type

Perennial herb

Flower Color

White, Green

Wildlife Supported

Butterflies & moths hosted ( 1 likely * ) SHOW ALL

Cattail Border Moth Bellura obliquaBellura obliqua

Landscaping Information

Nurseries

Carried by 1

Natural Setting

Climate

Annual Precipitation: 10.0" - 27.2", Summer Precipitation: 0.18" - 1.43", Coldest Month: 46.4" - 52.6", Hottest Month: 71.0" - 77.4", Humidity: 1.35" - 23.96", Elevation: -2" - 3343"

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Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links: Jepson eFlora Taxon Page CalPhotos Wikipedia Calflora

Sagittaria montevidensis

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