Arenaria L.
  • Sp. Pl. 1: 423. 1753. (1 May 1753)
  • Sandwort, sabline [Latin arena, sand, a common habitat]

Cite taxon page as 'WFO (2021): Arenaria L. Published on the Internet; Accessed on: 15 Jun 2021'

General Information


Arenaria lanuginosa (Michx.) Rohrb. in Mart., Fl. Bras. 14(2): 274. 1872; Spergulastrum lanuginosum Michx.

Hierbas perennes, tallos decumbentes, ramificados en la base y hacia arriba, generalmente 10–40 cm de largo, cortamente pilosos o a veces largamente pilosos o glabros; entrenudos generalmente tan largos como las hojas o más largos. Hojas opuestas, lineares o lanceoladas (raramente ovadas), 5–30 mm de largo y 2–10 mm de ancho, ápice agudo o acuminado, delgadas, glabras a pilosas especialmente en la nervadura central y los márgenes, papilosas; estipulas ausentes. Flores solitarias, axilares, pedicelos 5–30 mm de largo, menudamente pilosos; sépalos 5, lanceolados a ovados, 2–7 mm de largo, agudos o acuminados, a veces ciliados en la base, margen escarioso, glabros o pilosos, frecuentemente papilosos y algo carinados; pétalos 5, inconspicuos, enteros, hasta 2/3 de la longitud de los sépalos, blancos; estambres 10; estilos 3, libres. Cápsula madura 3–4 mm de largo, sobrepasando al cáliz, con 6 valvas que se separan rápidamente, tornándose escariosas, ápices agudos, recurvados; semillas maduras lisas, la medida máxima ca 1 mm, comprimidas, café-negro lustrosas.

Frecuente en bosques de pino-encinos y nebliselvas, zona norcentral; 950–1500 m; fl y fr durante todo el año; Moreno 11008, Stevens 21029; sureste de Estados Unidos, en las montañas de México a Sudamérica y en las Antillas. Un género con ca 250 especies del hemisferio norte y montañas de Sudamérica. En otros sitios se han reconocido varios taxones infraespecíficos de A. lanuginosa. El complejo de esta especie requiere un estudio de las poblaciones a lo largo de su extensión geográfica para que la separación de taxones pueda hacerse con seguridad. Las plantas nicaragüenses son relativamente uniformes.

  • Provided by: [G].Flora de Nicaragua
    • Source: [
    • 1
    • ]. 

    Annual, biennial or perennial herbs, glabrous or pubescent, prostrate and cespitose to diffuse and spreading, the stems somewNhat resilient and occasionally suffruticose below. Leaves opposite, petiolate to sessile and slightly amplexicaul, exstipulate, subulate and coriaceous to broadly elliptic and membranaceous. Flowers axillary or terminal, solitary or in dichasial cymes. Sepals 5, connate only at the base if at all. Petals 5, rarely lacking, wrhite or occasionally red, entire or shallowly emarginate. Stamens 10, rarely 5; anthers versatile; 2-celled, longitudinally dehis- cent; filaments flattened and usually united below to form a slightly perigynous disk. Ovary superior, 3- (2-5-) carpellate with 3 (2-5) filiform styles free to their bases; ovules numerous on basal placentae. Capsule dehiscing into as many entire to deeply emarginate valves as there are styles; seeds numerous, cochleate, smooth to tuberculate, estrophiolate, the embryo curved about the perisperm.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 2
    • ]. 

    Plants annual or perennial, sometimes densely matted. Taproots filiform to moderately thickened; rhizomes slender. Stems prostrate to ascending or erect, simple or branched, terete to ellipsoid, angular or grooved. Leaves mostly connate, mostly sessile, not congested at or near base of flowering stem; blade 1- or 3-5-veined, rarely linear or linear-lanceolate to usually elliptic to ovate or rarely orbiculate, sometimes subsucculent or succulent, apex blunt or obtuse to acute, acuminate, or apiculate. Inflorescences terminal or axillary open cymes, or flowers solitary; bracts paired, smaller, foliaceous. Pedicels erect or ascending to reflexed in fruit. Flowers: perianth and androecium hypogynous; sepals 5, distinct or barely connate proximally, green or rarely distally purple, lanceolate to broadly ovate, 2-5 mm, margins foliaceous or white and scarious, apex obtuse to rounded or acute to acuminate, not hooded; petals 5 or absent, white, not clawed, blade apex entire; nectaries at base of filaments opposite sepals; stamens 10 (ca. 8 in A. livermorensis), arising from base of ovary; filaments distinct; staminodes absent; styles 3, filiform, 0.5-2 mm, glabrous proximally; stigmas 3, linear along adaxial surfaces of styles, papillate (30×). Capsules broadly ellipsoid or ovoid to cylindric, opening by 6 ascending to recurved teeth; carpophore absent. Seeds [1-]5-35, brown to dark brown or black, reniform or suborbicular, laterally compressed or not, shiny or dull, smooth, rugulose, or tuberculate, marginal wing absent, appendage absent. x = [7, 8?] 10, 11.

  • Provided by: [F].Flora of North America @
    • Source: [
    • 3
    • ]. 

    Herbs annual or perennial, rarely biennial. Stems erect or rarely creeping, often caespitose or pulvinate. Leaves opposite, rarely whorled; leaf blade linear to elliptic, ovate, or orbicular, usually flat, margin entire. Flowers solitary or numerous in cymes, actinomorphic. Sepals 4 or 5, apex entire, rarely emarginate. Petals 4 or 5, sometimes absent, apex entire to toothed, 2-cleft, or fimbriate. Stamens (2--5 or 8 or)10. Ovary 1-loculed; ovules numerous. Styles 2 or 3(--5). Capsule ovoid, obovoid, or globose, usually shorter than persistent sepals, rarely equaling or longer than them, 3- or 6-valved. Seeds reniform or subovoid, flattened, smooth, tuberculate, or narrowly winged.

  • Provided by: [E].Flora Of CHina @
    • Source: [
    • 4
    • ]. 

    "Fls solitary or in terminal cymes; sep 5; pet 5, white, entire to emarginate; stamens normally 10; styles (2)3(–5); ovary unilocular; ovules numerous; primary valves of the capsule 3, entire or 2-cleft; seeds ± reniform; low annual or perennial herbs without stipules. (Minuartia, Moehringia, Sabulina) 250, widespread"

  • Provided by: [D].New York Botanical Garden
    • Source: [
    • 5
    • ]. 



  • Provided by: [C].Flora de Panama
    • Source: [
    • 2
    • ]. 


    A weedy genus containing nearly 200 species, this nearly cosmopolitan genus is in the tropics largely restricted to high altitudes.

  • Provided by: [C].Flora de Panama
    • Source: [
    • 2
    • ]. 

    Included Species

    Other Local Names

    Sandwort, sabline [Latin arena, sand, a common habitat]

     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    MBG Floras Images
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • B Missouri Botanical Garden
    Flora de Panama
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • C Missouri Botanical Garden
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • D Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora Of CHina @
    'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Missouri Botanical Garden
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • F Flora of North America Association
    Flora de Nicaragua
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • G Missouri Botanical Garden
    World Flora Online consortium
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).