Sesuvium maritimum Britton, Sterns & Poggenb., Prelim. Cat.
Creators: name: Bohley, Katharina
name: Winter, Pieter J. D.
name: Kadereit, Gudrun
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Caryophyllales
Aizoaceae
Sesuvium
Sesuvium maritimum

description: SESUVIUM MARITIMUM (Walter) Britton, Sterns & Poggenb., Prelim. Cat.: 20. 1888.
Pharnaceum maritimum Walter, Fl. Carol. [Walter]: 117. 1788.
Sesuoium pentandrum Elliott, Sketch Bot. S. Carolina [Elliott] 1 (6): 556. 1821.
Mollugo maritima (Walter) Ser. ex DC. in Prodr. [A. P. de Candolle] 1: 393. 1824.— TYPE: U. S. A. South Carolina, Georgetown County: Yawkey Wildlife Center, Mosquito Creek drainage on S Island, 28 Jul 1987, Nelson 5850 (neotype: USCH, USCH0000001 digital image!, designated by Ward (2008).
Slender procumbent to ascending, annual herb with sparse bladder cells on leaves and internodes; forming mats up to 60 cm in diam; internodes pale when dry. Leaves up to 27 mm long, oblanceolate, flat, and hardly succulent; petiole up to 7 mm long. Flowers sessile, 3–6 mm long, usually white, often numerous; bracts in one pair, ∼ 1 mm long, lanceolate. Stamens 5, often pink. Ovary with 3–5 carpels and the same number of free styles. Seeds numerous, 0.8–0.9 mm long, and reniform, with a smooth, black, dark brown or grey, sometimes slightly dull seed coat.
Distribution and Habitat — This species is found on the Bahamas, in Belize, Cuba, Mexico, Puerto Rico, St. Barthelemy, and the U. S. A. (FL, LA, MD, NJ, NC, OK, SC, TX) (Fig. 9). Plants grow in coastal regions (beaches, mangroves, marshes) and also in disturbed areas. They are always found in saline conditions, usually on sandy or loamy soil.
Vernacular Names — Slender sea purslane.
Note — Some floras also report the occurrence of individuals with two carpels (e.g. Ferren Jr. in FNA [Vivrette et al. 2003]).
Representative Specimens Examined — BAHAMAS. Eleuthera: Cape Eleuthera, 15 May 1975; D. S. Correll & S. R. Hill 45296 (BRIT, MO); Great Inagua: E end of Maroon Hill, along shore of Lake Rosa, 04 Jun 1974, G. R. Proctor & W. T. Gillis 33944 (B, MO); ca. 1.6 km O of Matthew Town, ca. 20°57′0.208″N, 73°38′58.549″W, 01 Mar 1974, D. S. Correll 41688 (LL, MO); just NE of Matthew Town, near Horse Pond, ca. 20°57′ 21.877″N, 73°40′1.552″W, 31 Jul 1975, D. S. Correll 45807 (BRIT); Little Exuma: Cooper's Farm, Forbes Hill, ca. 23°27′40.6″N, 75°39′8.841″W, 09 Mar 1976, D. S. Correll & H. B. Correll 46903 (MO).
BELIZE. Belize: Crooked tree, near Crooked Tree Lagoon, ca. 17°46′ 45.62″N, 88°31′53.173″W, 14 Jun 1993, M. A. Vincent et al. 5950 (MO). Corozal Distr.: Cerros Maya Ruins, Lowry's Bight, ca. 18°21′30.2220″N, 88°21′09.9324″W, 11 Apr 1983, C. J. Crane 541 (BRIT, MO, LL).
CUBA. Isle of Pine: Caleta Cocodrilos, ca. 21°30′14.493″N, 83°6′0.874″ W, 08 Mar 1916, N. L. Britton et al. 15308 (MO); Pinar del Rio, Central Orozco (between Cabanas and Bahia Honda), near “manglares”, ca. 22°58′41.48″N, 83°0′45.881″W, 25 Mar 1920, E. L. Ekman 10569 (UPS).
FRENCH OVERSEAS COLLECTIVITY. Saint Barthélemy: Ilot de Frégate, ca. 17°56′24.3348″N, 62°50′00.6504″W, 30 May 1951, C. de Gallo 47 (WAG).
MEXICO. Colima: Manzanillo, near shore, W side of bay, ca. 8.9 km WNW of city, ca. 19°6′16.563″N, 104°24′3.816″W, 11 Jul 1956, D. P. Gregory & G. Eiten 316 (BRIT, MO). Guerrero: Mun. Petatlán, Laguna Carrizal, 17°34′06″N, 101°25′52″W, 10 Jan 1995, L. Lozada 1887 (MEXU). Jalisco: Chamela-Cuixmala biosphere reserve, Cuixmala, highway Puerto Vallarta-Manzanillo, km 45, 19°23.549'N, 105°00.206'W, 01 Sep 1998, M. Bueno 12 (TEX); Rancho Cuixmala, lagoons along road to Casa Jeanette, near Brignoni plot boundary, 19°23'N, 105°01'W; 14 May 1991, E. J. Scott et al. 3593 (CAS). Veracruz: (La) Tunilla 13 km from Tlacotalpan, ca. 18°42′23.9724″N, 95°38′38.2884″W, 07 Aug 1971, A. Lot 1408 (MEXU, MO, TEX).
PUERTO RICO. Icacos Island, ca. 18°23′11.828″N, 65°35′19.863″W, 12 Jul 1966, R. A. Hoaeard et al. 16130 (S).
U. S. A. Florida, Brevard County: Merritt Island, Indian River, A. H. Curtiss 350 (B, MO); Citrus County: coast at Fort Gulf Beach, W of Crystal River, 20 Apr 1980, C. F. Reed 115008 (MO); Franklin County: St. Vincent Island, National Wildlife Refuge, 29°40′54.174″N, 85°6′26.305″W, 22 May 1987, L. C. Anderson 10600 (BRIT, MO); Lee County: Central Sanibel, pond shores; Sea Oats subdivision, 06 Mar 1976, W. C. Brumbach 8936 (BRIT); Martin County: between causeway to Stuart Beach and House of Refuge, 15 Aug 1972, R. Kral 48058 (MO); Monroe County: Key West, 10 Apr 1896, A. H. Curtiss 5619 (MO, Z); Wakulla County: St. Marks Wildlife Refuge, near lighthouse, ca. 30°4′24.589″N, 84°10′46.589″W, 15 Jul 1962, R. K. Godfrey 62387 (CAS, TEX); vicinity of Shell Point, ca. 30°3′11.8″N, 84°17′4.725″W, 09 Jun 1960, R. K. Godfrey 59722b (BRIT). Georgia, Glynn County: ca. 2.7 km NW of St. Simons, 31°10′51.376″N, 81°24′23.871″W, 12 Jun 1974, W. H. Duncan 29056 (TEX). Kansas, Barber County: 1.6 km S and 3.2 km E of Hazelton, dry bed of a saline creek, 37°4′28.167″N, 98°21′56.685″W, 24 Sep 1986, R. L. McGregor 37818 (TEX). Louisiana, Cameron Parish: marsh S of Cameron near McNeese State University Field Station, ca. 29°46′8.054″N, 93°20′28.161″W, 29 Oct 1982, R. D. Thomas et al. 82484 (BRIT); Jefferson Parish: Grand Island, near E end of island road, 29°15′59.072″N, 89°57′10.054″W, 11 Nov 1966, J. W. Thieret 25235 (LL); Terrebonne Parish: S of Point Chen, ca. 29°24′13.363″N, 90°28′20.683″W, 27 Jun 1970, R. D. Thomas et al. 19691 (BRIT, MO). Maryland, Worcester County: Assateague Island, ca. 38°5′21.029″N, 75°12′10.04″W, 27 Aug 1955, C. F. Reed 36759 (MJG, MO). New Jersey, Atlantic County: Brigantine Beach (N end), 39°25′23.516″N, 74°22′3.565″W, 26 Aug 1935, J. M. Fogg Jr. 9557 (MO); Cape May County: Cape May, sandy beach, ca. 38°56′6.338″N, 74°53′51.903″W, 28 Jul 1874, C. F. Parker s. n. (UPS); Ocean City, ca. 39°16′25.4172″N, 74°34′20.8164″W, 05 Aug 1882, AC s. n. (MO). North Carolina, Brunswick County: Southport, waste land along waterfront, ca. 33°55′22.389″N, 78°0′22.827″W, 06 Oct 1969, S. W. Leonard & D. B. Russ 2489 (B, CAS, MO, S, TEX, Z); Carteret County: beach access area to more Morehead City channel between Morehead City and Beaufort off Rt. 70, ca. 34°43′18.001″N, 76°41′9.999″W, 18 Aug 1998, J. Stone & D. Holland 1526 (BRIT); Dare County: Hatteras, 03 Aug 1966, A. E. Radford 45105 (BRIT). Texas, Cameron County: Boca Chica, along coast, 01 May 1937, R. Runyon 1653 (BRIT).
Notes — The very similar species S. trianthemoides differs from S. maritimum in having an ovary of only 2 carpels and styles and slightly larger seeds with a stronger seed coat texture.
description: Published as part of Bohley, Katharina, Winter, Pieter J. D. & Kadereit, Gudrun, 2017, Data from: A revision of Sesuvium (Aizoaceae, Sesuvioideae), pp. 109071 in Data in brief 48 (1) on pages 137-138, DOI: 10.5061/dryad.tk922, http://zenodo.org/record/10815406