Rosa setigera ( Rosa Setighera, Rosa prairie [3] ) - shrub ; species of the genus Rosehip of the family Pink .
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Rosa setigera Michx. | |||||||||||||||||||||||||
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Since the mid-19th century, R. setigera has been used many times in breeding with the goal of breeding winter-hardy varieties . The result was a series of valuable hybrids.
In English horticultural literature, this species may be referred to under the names: Bramble-leaved Rose, Prairie Rose, Rosier à feuilles de ronce, The Prairie Rose [4] .
Content
- 1 Natural varieties
- 2 Distribution
- 3 Botanical Description
- 4 In culture
- 5 notes
- 6 References
Natural Varieties
Different sources give different numbers of natural varieties of this species. Below are all mentioned.
- Rosa setigera var. setigera
- Rosa setigera var. tormentosa torr. & A.Gray
- Rosa setigera var. serena [5] [6]
- Rosa setigera f. alba - white flowers
- Rosa setigera f. inermis - no studs
- Rosa setigera var. glabra
- Rosa setigera var. pubescens [4]
Distribution
Steppe regions of North America [3] .
Slopes, pastures, roadsides, are occasionally found in floodplains.
Pollinators can be representatives of Andrenidae , Apidae (in particular Apis mellifera ), Halictidae , Megachilidae , Syrphidae (in particular Eristalis tenax ), Xylocopa , as well as Trichiotinus piger beetles [2] .
Botanical Description
Dioecious plants. Pollen from female flowers is less accessible to pollinators than pollen from flowers on males. Male plants have more flowers in inflorescences [7] .
The length of shoots is 2–4 m [5] , according to another source 1.5–6 m [4] .
Spikes are straight, bent, often with a flattened base.
Leaves with 3, less than 5 fine-toothed leaves.
Inflorescence visor.
The flowers are simple, pink.
Fruits are about 1 cm in diameter.
It blooms in Canada from late June to mid-July.
It differs from Rosa laevigata by the pink color of the flowers. From Rosa multiflora lack of distinct fringe on stipules [2] .
In Culture
Frost resistance zones : from 3b to warmer [4] . According to other sources, it can withstand temperatures down to -20 ° C [3]
Notes
- ↑ For the conventionality of indicating the class of dicotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Dicotyledonous article .
- ↑ 1 2 3 Marko Melymuka & Robyn J. Burnham. Rosa setigera Michx. University of Michigan Archived February 1, 2012.
- ↑ 1 2 3 Bylov V.N., Shtanko I.I., Yudintseva E.V., Mikhailov N.L. Roses. Brief summary of the introduction . - M .: Science, 1972.
- ↑ 1 2 3 4 Rosa setigera on Helpmefind.com
- ↑ 1 2 Gleason, HA, A. Cronquist 1963. Illustrated Flora of Northeastern United States and Canada. New York, New York: Hafner Publishing Company, Inc.
- ↑ USDA Natural Resources Conservation Plants Database.
- ↑ Kevan, PG, D. Eisikowitch, JD Ambrose, and JR Kemp . 1990. Cryptic dioecy and insect pollination in Rosa setigera Michx. (Rosaceae), a rare plant of carolinian Canada. Biological Journal of the Linnean Society 40 (3): 229-243.