| Section 5 » Family Alismataceae |
Show/Hide Synonym
| taxonName | relationship | relatedTaxonName | relatedTaxonRefText | relComments |
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| Sagittaria chapmanii | = | Sagittaria graminea ssp. chapmanii | Flora of North America (1993b, 1997, 2000, 2002a, 2002b, 2003a, 2004b, 2005, 2006a, 2006b, 2006c, 2007a, 2009, 2010) | | | Sagittaria chapmanii | = | Sagittaria graminea var. chapmanii | Godfrey and Wooten (1979, 1981) | | | Sagittaria chapmanii | = | Sagittaria graminea var. chapmanii | Kartesz (1999) | | | Sagittaria chapmanii | = | Sagittaria graminea var. chapmanii | Wunderlin & Hansen Flora of Florida (3) | | | Sagittaria chapmanii | = | Sagittaria graminea var. chapmanii | Haynes, Les, & Holm-Nielsen in Kubitzki (1998b). | | | Sagittaria chapmanii | = | Sagittaria graminea var. chapmani | Haynes, Les, & Holm-Nielsen in Kubitzki (1998b). | , orthographic variant | | Source: Weakley's Flora |
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| Author | (J.G. Smith) Mohr | |
| Distribution | Found only in the southern Coastal Plain, from Carteret, Onslow, Bladen, and Columbus counties.
This is a southern Coastal Plain species ranging north to southeastern NC and then south to southern FL and west to southeastern LA. | |
| Abundance | Very rare, found only at a few scattered and isolated wetlands. It is State Endangered and has a State Rank of S1. | |
| Habitat | This has one of the most restrictive habitats of any native vascular plant, being limited mainly to limesink ponds, very rarely in scrapes and ditches. |
| Phenology | Blooms from May into September, and fruits shortly after flowering. | |
| Identification | This is one of a number of small species of Sagittaria, most also being rather slender in stature. This species has a somewhat flat leaf blade, being narrowly elliptical and several inches long, atop the stalk of 6 inches or longer. The inflorescence is a panicle (i.e., is branched) of small 3-petaled white flowers, atop a slender stem rising to about 1 foot tall. The very similar and more widespread S. graminea has the inflorescence unbranched. S. chapmanii has leaf blades less than 2/5-inch wide, whereas S. weatherbeiana has them from 1/2-1-inch wide, and with blunt tips (as opposed to acute in S. chapmanii). Thus, to search for this species, you will need to visit a limesink pond, and search for a narrow-leaved plant with leaf blades clearly wider than the stalk (though still less than 2/5-inch wide). You might well need the inflorescence to see one that has branches, so as to rule out S. graminea. | |
| Taxonomic Comments | This species is often treated either completely within S. graminea, as a variety of it, as a subspecies of it, or as a good species. Weakley (2018) does treat it as a good species, but NatureServe does not, and lists it as a subspecies -- S. graminea ssp. chapmanii.
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| Other Common Name(s) | None | |
| State Rank | S1 | |
| Global Rank | G5T3? [G3?] | |
| State Status | E | |
| US Status | | |
| USACE-agcp | OBL link |
| USACE-emp | | |
