Rock Garden Plants
Polygonum cognatum Meisn.  
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FamilyPOLYGONACEAE
Genus speciesPolygonum cognatum Meisn. 
SynonymsPolygonum alpestre C.A.Mey.
 Polygonum myriophyllym H.Gross
 Polygonum pluriflorum K.Koch
Habitatrocky slopes
Altitude1400-4600m
Descriptionleaves petiolate, elliptic, 1-2cm long, on both faces glabrous, ochreas silvery, hyaline, veined, flowers 1-5 in axillary cymes, bracts membranous, acuminate, 1-2cm long
Size10-15cm
Colorpink, white
Bloomsummer
Ca
Typesubshrub, carpet
Cultivationsunny, dry, rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, germ. 1-3 months, 13-18°C
cuttings in late spring and late summer
Territory Asia-Temperate
     Siberia (Altay )
     Middle Asia (Turkmenistan )
     Caucasus (North Caucasus , Transcaucasus )
     Western Asia (Iran , Iraq , Lebanon-Syria , Palestine , Turkey )
     China (Inner Mongolia , Xinjiang )
     Mongolia
Asia-Tropical
     Indian Subcontinent (Pakistan , West Himalaya)
BibliographyPlants of the World online powo.science.kew.org
International Plant Names Index www.ipni.org
Comments

POLYGONACEAE

Polygonum cognatum Meisn., Monogr. Polyg. 91 (1826)

1400-4600m
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cognatum typicum ined.

Synonyms:
Polygonum affine Stephan ex Spreng.
Polygonum alpestre C.A.Mey.
Polygonum alpestre ammannoides (Jaub. & Spach) Boiss.
Polygonum ammannoides Jaub. & Spach
Polygonum confertum Royle ex Bab.
Polygonum libanoticum Ehrenb. ex Meisn.
Polygonum maritimum Eichw.
Polygonum monticola Steud.
Polygonym myriophyllum H.Gross
Polygonum pluriflorum K.Koch

Altay, Turkmenistan, Caucasus, w. Asia, n. China, Mongolia, Pakistan, w. Himalaya
30 ALT 32 TKM 33 NCS TCS 34 IRN IRQ LBS PAL TUR 36 CHI CHX 37 MON 40 PAK WHM

cognatum chitralicum (Rech.f. & Schiman-Czeika) Qaiser, Fl. Pakistan 205: 84 (2001)
Basionym:
Polygonum chitralicum Rech.f. & Schiman-Czeika, Fl. Iranica [Rechinger] 56: 66 (1968)

e. Afghanistan, n. Pakistan
34 AFG 40 PAK

cognatum myrtillifolium (Kom.) Yurtseva, Wulfenia 19: 172 (2012)

Basionym:
Polygonum myrtillifolium Kom., Fl. URSS 5: 608, 718 (1936)

Synonyms:
Polygonum longipedicellatum Zakirov

Tajikistan, ne. Afghanistan
32 TZK 34 AFG

cognatum serpyllaceum (Jaub. & Spach) Yurtseva, ibid

Basionym:
Polygonum serpyllaceum Jaub. & Spach, Ill. Pl. Orient. 2(12): 24 (1844)

Synonyms:
Polygonum kudriaschevii Vassilkovsk.
Polygonum pamiroalaicum Kom.
Polygonum radicosum Boiss.

c. Asia, Afghanistan, Iran, Pakistan
32 KAZ KGZ TZK UZB 34 AFG IRN 40 PAK

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