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Moehringia lateriflora

(Blunt-Leaf Grove-Sandwort)

Common Names

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Common Names in English:

Blunt-Leaf Grove-Sandwort, Blunt-Leaf Sandwort, Bluntleaf Sandwort, Grove Sandwort

Description

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Family Caryophyllaceae

Herbs annual or perennial , rarely subshrubs or shrubs . Stems and branches usually swollen at nodes. Leaves opposite, decussate, rarely alternate or verticillate , simple , entire, usually connate at base ; stipules scarious , bristly , or often absent. Inflorescence of cymes or cymose panicles, rarely flowers solitary or few in racemes , capitula, pseudoverticillasters, or umbels. Flowers actinomorphic , bisexual , rarely unisexual , occasionally cleistogamous . Sepals (4 or) 5, free , imbricate, or connate into a tube , leaflike or scarious, persistent , sometimes bracteate below calyx. Petals (4 or) 5, rarely absent, free, often comprising claw and limb; limb entire or split, usually with coronal scales at juncture of claw and limb. Stamens (2--) 5--10, in 1 or 2 series. Pistil 1; carpels 2--5, united into a compound ovary. Ovary superior, 1-loculed or basally imperfectly 2--5-loculed. Gynophore present or absent. Placentation free, central, rarely basal; ovules (1 or) few or numerous , campylotropous. Styles (1 or) 2--5, sometimes united at base. Fruit usually a capsule, with pericarp crustaceous , scarious, or papery , dehiscing by teeth or valves 1 or 2 × as many as styles, rarely berrylike with irregular dehiscence or an achene. Seeds 1 to numerous, reniform , ovoid , or rarely dorsiventrally compressed , abaxially grooved , blunt , or sharply pointed , rarely fimbriate-pectinate; testa granular , striate or tuberculate , rarely smooth or spongy ; embryo strongly curved and surrounding perisperm or straight but eccentric ; perisperm mealy.

Between 75 and 80 genera and ca. 2000 species: widespread but mainly of temperate or warm-temperate occurrence in the N hemisphere, with principal centers of distribution in the Mediterranean region and W Asia to W China and the Himalayas, fewer species in Africa S of the Sahara, America, and Oceania; 30 genera (two endemic) and 390 species (193 endemic) in China.

Arenaria, Silene, and Stellaria contain over half the species in the family in China. They are mostly concentrated in the Qinghai-Xizang plateau , and are especially rich from the Hengduan Mountains to the Himalayas. The main uses of this family are medicinal and ornamental . Dianthus superbus, Pseudostellaria heterophylla, Stellaria dichotoma var. lanceolata, and Vaccaria hispanica are commonly used in traditional Chinese medicine . Some species of Arenaria, Dianthus, Gypsophila, Psammosilene, and Silene are used as medicinal herbs among the people or are habitually used in local Chinese medicine. Many species of Dianthus, Gypsophila, Lychnis, Saponaria, and Silene are grown as ornamentals. Atocion armeria (Linnaeus) Rafinesque ( Silene armeria Linnaeus), native to Russia and Europe, is also cultivated in China. It differs from Silene in having a corymbose inflorescence and obscure calyx veins. Wu Cheng-yih, Ke Ping, Zhou Li-hua, Tang Chang-lin & Lu De-quan. 1996. Caryophyllaceae. In: Tang Chang-lin, ed., Fl. Reipubl. Popularis Sin. 26: 47–449.[1]

Subfamily Faboideae

Mostly herbs, shrubs , or trees . Leaves pinnate or palmate to trifoliolate or apparently simple . Corolla usually, showy, zygomorphic, the petals imbricate, posterior (upper or banner ) petal outermost in bud. Stamens 10 or 9 + 1 (diadelphous ), not showy. Pollen released in monads . Seeds with u-shaped line (pleurogram) lacking. [Carr]

Genus Moehringia

Herbs, annual or perennial . Taproots slender, rhizomes slender or absent. Stems prostrate or ascending to erect , simple or branched, terete or angled . Leaves not connate , petiolate or sessile, not congested at or near base of flowering stem; blade 1-3(-7) -veined, lanceolate to elliptic or ovate to broadly ovate, not succulent, apex acute or obtuse . Inflorescences terminal or axillary , open cymes, or flowers solitary; bracts paired and foliaceous , or smaller and mostly scarious . Pedicels erect or recurved in fruit. Flowers: perianth and androecium weakly perigynous; hypanthium minute, disc-shaped; sepals (4-) 5, distinct , green, ovate to obovate , 1.7-6 mm, herbaceous, margins white, scarious, apex obtuse or acute to acuminate, not hooded ; petals (4-) 5, white, not clawed, blade apex entire; nectaries as fleshy lobes at base of filaments opposite sepals, ca. 3 times width of filament, connate proximally into basal disc; stamens 10, occasionally 8, arising from nectariferous disc; filaments distinct; staminodes absent; styles 3, filiform , 1.5-1.8 mm, glabrous proximally; stigmas 3, linear along adaxial surface of styles, minutely papillate (30×). Capsules broadly ovoid to subglobose, opening by 6 revolute teeth; carpophore absent. Seeds 2-6, reddish brown to blackish, ellipsoid to reniform , laterally compressed , shiny, smooth to minutely tuberculate , marginal wing absent, appendage white, ± elliptic, spongy . x = 12.

Species 25: north-temperate North America, Europe, Asia.

Members of Moehringia and Petrocoptis (a segregate from Silene, comprising four species in the Pyrenees) are the only Caryophyllaceae with strophioles (eliasomes), spongy seed appendages that attract ants . Foraging ants gather the seeds, eat only the strophiole, and œplant the seeds in their nests .

We follow J. McNeill (1962) and V. Bittrich (1993) among others in recognizing Moehringia. The appendaged (strophiolate ) seed and a chromosome base number of 12 are the chief characters distinguishing Moehringia from Arenaria. Although McNeill noted that this distinction is similar to features used to distinguish subgenera within Arenaria, he retained Moehringia and suggested that, among other evidence, cytological investigation of the North American species of Moehringia and members of Arenaria subg. Leiosperma McNeill (New World, especially Andean South America) would help support such action. Chromosome counts made since 1962 do show x = 12 in North American Moehringia and x = (10) 11 for Arenaria subg. Leiosperma.[2]

Physical Description

Species Moehringia lateriflora

Plants perennial . Rhizomes forming extensive network . Stems ascending or decumbent , often branched, terete , 5-30 cm, uniformly retrorsely pubesescent. Leaves sessile or subsessile ; petiole 0.1-1 mm; blade 1-3-veined, broadly elliptic to oblong-elliptic or oblanceolate , 6-30(-35) × (2-) 5-10(-17) mm, margins granular to minutely serrulate-ciliate, apex obtuse or rounded . Inflorescences 1-5-flowered; bracts 1-3 mm, margins scarious . Pedicels erect , 3-30 mm. Flowers: sepals 5, midrib not keeled , ovate or obovate , herbaceous portion oblong to elliptic, 1.7-2.8(-3) mm, margins narrow, apex mostly obtuse or rounded; petals 5, 3-6 mm, ca. 2 times as long as sepals. Capsules subglobose, 3-5 mm, 11/ 2-2 times as long as sepals. Seeds reniform , 1 mm, smooth . 2n = 48. [source]

Four varieties of Moehringia laterifolia have been described based on variation in leaf width and pubescence ; they have been little used, and the variation appears not to be correlated with geography. [source]

Flowers: Bloom Period: Moist or dry woodlands, meadows, gravelly shores ; 50-2700 m (Ref. 51817).

Flower Color: near white, white

Size/Age/Growth

Size: under 6" tall.

Habitat

Moist or dry woodlands, meadows, gravelly shores ; 50-2700 m (Ref. 51817).

Typically found at an altitude of 0 to 3,632 meters (0 to 11,916 feet).[3]

Biology

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Growth

Culture: Space 12-15" apart.

Soil: Minimum pH: 5.6 • Maximum pH: 7.8

Sunlight: Sun Exposure: Full Sun .

Temperature: Cold Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b. (map)

Taxonomy

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Unambiguous Synonyms

  1. A. lateriflora var. angustifolia H. St. John
  2. A. lateriflora var. taylorae H. St. John
  3. A. lateriflora var. tenuicaulis Blankinship
  4. Arenaria lateriflora L.
  5. Arenaria lateriflora Linnaeus, Sp. Pl. 1: 423. 1753
  6. Arenaria lateriflora var. angustifolia (Regel) St. john
  7. Arenaria lateriflora var. tayloriae St. John

Notes

Publishing author : H.St.John Publication : Rhodora 19: 262 1917 Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Similar Species

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Members of the genus Moehringia

ZipcodeZoo has pages for 58 species, subspecies, varieties, forms, and cultivars in this genus:

M. alleizettei · M. bavarica · M. ciliata · M. concarenae · M. dasyphylla · M. dielsiana · M. diversifolia · M. elongata · M. erecta · M. flaccida · M. fontqueri · M. frutescens · M. glauca · M. glaucovirens · M. glochidisperma · M. grisebachii · M. hybrida · M. hypanica · M. insubrica · M. intermedia · M. intricata · M. intricata subsp. castellana · M. intricata subsp. giennensis · M. intricata subsp. tejedensis · M. intricata tejedensis · M. intrincata · M. jankae · M. lateriflora (Blunt-Leaf Grove-Sandwort) · M. laterifolia · M. lebrunii · M. linearifolia · M. macrophylla (Large-Leaved Sandwort) · M. macrophyllum · M. malyi · M. markgrafii · M. minutiflora · M. muscosa · M. nemorosa · M. papulosa · M. pendula · M. pentandra · M. pichleri · M. platysperma · M. polygonoides · M. ponae · M. provincialis · M. sedifolia · M. sedoides · M. stellarioides · M. stricta · M. subulata · M. tejedensis · M. thomasiana · M. tommasinii · M. trinervia (Three-Veined Sandwort) · M. tzinervia · M. umbrosa · M. villosa

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 15, 2007:

Identifiers

Footnotes

  1. Dequan Lu, Zhengyi Wu, Lihua Zhou, Shilong Chen, Michael G. Gilbert, Magnus Lidén, John McNeill, John K. Morton, Bengt Oxelman, Richard K. Rabeler, Mats Thulin, Nicholas J. Turland & Warren L. Wagner "Caryophyllaceae". in Flora of China Vol. 6 Page 1. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. Richard K. Rabeler, Ronald L. Hartman "Moehringia". in Flora of North America Vol. 5. Oxford University Press. Online at EFloras.org. [back]
  3. Mean = 586.390 meters (1,923.852 feet), Standard Deviation = 637.810 based on 506 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/1/2009