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Linum perenne

(Lewis Prairie Flax)

Common Names

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Click on the language to view common names.

Common Names in Chinese:

Duo Nian Sheng Ya Ma, Su Gen Ya Ma

Common Names in English:

Blue Flax, Lewis Blue Flax, Lewis Prairie Flax, Perennial Flax, Prairie Flax

Description

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Genus Linum

Erect herbs, rarely shrubby below. Leaves alternate, linear to lanceolate, sessile. Flowers ebracteate , 5-merous, in cymes or racemes . Sepals entire. Petals linear to lanceolate or obovate . Glands 5, adnate to the staminal tube , opposite the petals. Stamens 5, connate at the base ; staminodes present or absent. Carpels 5; ovary 10-locular due to secondary septa; styles 5, free or connate at the base; stigma linear to capitate. Fruit a septicidal capsule.

A genus of about 230 temperate and sub-tropical species, abundant in the Mediterranean region.[1]

Physical Description

Species Linum perenne

Perennials 20-90 cm tall. Taproot sturdy. Stems erect or ascendant, branched from base , woody at base. Leaves alternate, linear to linear-lanceolate, 2-4 cm × 1-5 mm, 1(or 3) -veined from base, base attenuate, apex acute. Flowers numerous , in racemose cymes, ca. 2 cm in diam., heterostylous. Pedicel 1-2.5 cm, erect or slightly excurved . Sepals ovate , 3.5-5 mm, 5- or 7-veined, margin entire; outer 3 sepals with apex acute; inner 2 sepals with apex obtuse . Petals blue to bluish purple, obovate , 1-1.8 cm. Styles distinct ; stigma capitate. Capsule subglobose, 3.5-8 mm in diam., septicidal . Seeds brown, elliptic , flattened, 3.5-4 × ca. 2 mm. Fl. Jun-Aug, fr. Jul-Sep. 2n = 18. [source]

Habit: Subshrub , Shrub

Flowers: Bloom Period: April, May. • Flower Color: medium blue

Size/Age/Growth

Size: 12-18" tall.

Habitat

Dry mountain slopes , sparse thickets, grasslands, dry plains , sandy and gravelly floodplains ; below 4100 m [2].

Typically found at an altitude of 0 to 4,091 meters (0 to 13,422 feet).[3]

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 15-18" apart.

Soil: Minimum pH: 6.1 • Maximum pH: 7.8

Sunlight: Sun Exposure: Full Sun .

Moisture: Drought Tolerance: High

Temperature: Cold Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b. (map)

Taxonomy

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Unambiguous Synonyms

  1. Cathartolinum multicaule (Hook.) Small
  2. Linum sibiricum Candolle.
  3. Mesynium imbricatum (Raf.) W. A. Weber
  4. Nezera imbricata Raf.

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Place of publication : Sp. pl. 1:277. 1753

Name verified on 08-May-1992 by ARS Systematic Botanists. Last updated: 05-Apr-2004

Similar Species

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Members of the genus Linum

ZipcodeZoo has pages for 819 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:

L. abyssinicum · L. acuminatum · L. acuticarpum · L. adenophorum · L. adenophyllum · L. adpressum · L. adustum · L. aethiopicum · L. affine · L. africanum (African Flax) · L. agrestre · L. alatum (Winged Flax) · L. albanicum · L. albidum · L. album · L. alexeenkoanum · L. alnense · L. alpestre · L. alpinum · L. alpinum gracilius · L. alpinum julicum · L. alpinum pirinicum · L. alpinum subsp. gracilius · L. alpinum subsp. pirinicum · L. alpinum var. pseudomontanum · L. altaicum · L. alterniflorum · L. alternum · L. ambiguum · L. amurense · L. anatolicum · L. andicola · L. andicolum · L. anglicum · L. angustifolium · L. angustifolium mediterraneum · L. anisocalyx · L. annotinum · L. annuum · L. appressum · L. appresum · L. aquilinum · L. aquilinum chamissonis · L. aquilinum macraei · L. aquilinum var. cumingii · L. aquilinum var. obtusifolium · L. aquilinum var. oligophyllum · L. aquilinum var. ramosissimum · L. arboreum (Tree Flax) · L. arboreum var. doerfleri · L. arborium doerfleri · L. arenicola (Sand Flax) · L. aretioides · L. aristatum (Bristle Flax) · L. aristatum subteres · L. aristidis · L. arkansanum · L. armenum · L. aroanicum · L. aroanium · L. arvense · L. ascyrifolium · L. asiaticum · L. asperifolium · L. atricalyx · L. aucheri · L. aureum · L. australe (Southern Flax) · L. australe var. glandulosum Rogers (Southern Flax) · L. australe var. australe (Southern Flax) · L. australe var. gladulosum · L. australe var. glandulosum (Southern Flax) · L. austriacum (Asian Flax) · L. austriacum collinum · L. austriacum marschallianum · L. austriacum mauritanicum · L. austriacum subsp. marschallianum · L. austriacum subsp. mauritanicum · L. austriacum subsp. tommasinii · L. austriacum tommasinii · L. avictum · L. babingtonii · L. bahamense · L. bahamense f. corallicola · L. bahamense var. bracei · L. bahamense var. corallicola · L. baicalense · L. balansae · L. barbulatum · L. barrasi · L. barrasii · L. barsegjanii · L. bartlingii · L. basarabicum · L. bavaricum · L. beauharnaisianum · L. bellidifolium · L. berendieri · L. berlandieri (Berlandier's Yellow Flax) · L. berlandieri Hook. var. berlandieri Hook.

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 22, 2007:

Identifiers

Footnotes

  1. "Linum". in Flora of Pakistan . Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Linum perenne". in Flora of China Vol. 11 Page 35, 36. Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. Mean = 389.590 meters (1,278.182 feet), Standard Deviation = 512.670 based on 976 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/1/2009