Primula stricta
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Primula stricta is a plant from the family of the Primrose family (Primulaceae). It is mainly found in northern Europe and North America. A common name in Englishis Strict Primrose.
description
Appearance and leaf
Primula stricta grows as a perennial , herbaceous plant and usually reaches heights of 8 to 15 (rarely up to 19) centimeters. The rhizome is thin and short.
The foliage leaves standing together in a basal rosette are only indistinctly petiolate in a slightly winged petiole . The simple, bare leaf blade is 1 to 6 centimeters long and 0.3 to 1.1 centimeters wide and is obverse -lanceolate to spatulate with a blunt to pointed upper end. The leaf margins are whole or slightly serrated . On the underside of the leaf you can not see any net-like leaf veins .
Inflorescence and flower
The flowering period extends over the summer. The upright, thin, in the upper area at least somewhat floury inflorescence stem is 5 to 20 centimeters high during the flowering period and extends up to 35 centimeters until the fruit is ripe . The cephalic, umbellate inflorescence contains two to nine flowers . The more or less similar bracts are sack-shaped.
The hermaphrodite flowers are radially symmetrical , five-fold with a double flower envelope . The five 4 to 8 millimeters long, green-colored and purple-striped and usually at least slightly floury-dusted sepals are bell-shaped fused. The five lavender, opposite the sepals about twice as long petals have no glands and ausgerandete corolla lobes. The crown throat measures 4 to 7 millimeters in diameter; the coronet 4 to 8 millimeters. In Primula stricta is Homostylie ago.
Fruits and seeds
The ovoid-ellipsoidal capsule fruit is 0.9 to 1.2 times as long as the calyx. The seeds have a net-like structured surface.
Chromosome number
The number of chromosomes is 2n = 126, 88-136.
Occurrence, accompanying plants and endangerment
Primula stricta is distributed in northern Europe to the northwesternmost Siberia , in Danish Greenland and in northeastern Canada . For example, the European stocks are described in Finland , Sweden , Norway and Iceland . It mainly populates coastal landscapes such as coastal dunes , marshes and coastal rocks at altitudes from 0 to 300 meters. It is less common inland along rivers.
Are companion plants ears Grove rush, Poa alpina , bilberry , Alpine Meadow Rue, Autumn dandelion , Thorny moss fern , meadow buttercup and others.
Primula stricta is considered endangered in Finland and Norway.
Systematics
Primula stricta was founded in 1810 by Jens Wilken Hornemann in Flora Danica , Volume 8, Issue 24, 1385 board first described . A synonym for Primula stricta Hornem. is Primula hornemanniana clay. Primula stricta belongs to the section Aleuritia in the subgenus Aleuritia within the genus Primula .
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literature
- Sylvia Kelso: Primula . In: Flora of North America Editorial Committee (ed.): Flora of North America ... Magnoliophyta: Paeoniaceae to Ericaceae. tape 8 . Oxford University Press, New York 2009, ISBN 978-0-19-534026-6 , Primulaceae (English, Primula stricta , p. 294 - and ISBN 0195340264 ; text identical to the printed work online). (Section Description and Distribution)
Individual evidence
- ↑ a b Primula stricta. In: Finland's fauna and flora. NatureGate, accessed August 29, 2011 .
- ↑ Anderberg, Arne: Smalviva - Primula stricta distribution map. In: The virtuella floran. Naturhistorika riksmuseet, Stockholm, accessed 29 August 2011 (Swedish).
- ↑ Lapinesikko. ( Primula stricta ). In: Luonnontieteellinen Keskusmuseo, Helsingin yliopisto. Retrieved August 29, 2011 (Finnish).
- ↑ Strict Primrose. Primula stricta Hornem. . (No longer available online.) In: GlobalTwitcher.com. Archived from the original on February 3, 2016 ; accessed on August 29, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ David Stang: Ecology - Species Most Often Observed near Primula stricta. EcoChart. ZipcodeZoo.com, archived from the original on May 26, 2012 ; accessed on August 30, 2011 (English).
- ^ Primula stricta. Norwegian: Smalnøkleblom. In: National Red Lists - a focal point for national red lists & action plans. ZSL Living Conservation, accessed on December 14, 2016 .
Web links
- Smalviva. Primula stricta Hornem. . In: The virtuella floran. Naturhistorika riksmuseet, Stockholm, accessed 29 August 2011 (Swedish).