Digitalis grandiflora
{{Short description|Species of foxglove}}
{{speciesbox
|image = Digitalis grandioflora 2.jpg
|image_caption = Digitalis grandiflora at Schynige Platte
|genus = Digitalis
|species = grandiflora
|authority = Mill.
}}
Digitalis grandiflora, the yellow foxglove,{{BSBI 2007 |accessdate=2014-10-17 }}{{PLANTS|id=DIGR4|taxon=Digitalis grandiflora|accessdate=18 January 2016}} big-flowered foxglove, or large yellow foxglove, is a species of flowering plant in the genus Digitalis, family Plantaginaceae (formerly Scrophulariaceae). It is native to southern Europe and Asia. In mountains it grows on warm, bushy slopes or areas left after logging. The Latin specific epithet grandiflora means “large flowered”.{{cite book |last=Harrison |first=Lorraine |title=RHS Latin for Gardeners |year=2012 |publisher=Mitchell Beazley |location=United Kingdom |isbn=978-1845337315 }}
Description
It is a herbaceous perennial growing from a short rootstock with fibrous roots.{{Cite book|url=https://www.biodiversitylibrary.org/page/29991325#page/501/mode/1up|title = Flora of the U.S.S.R.|year = 1997|volume = 22}} D. grandiflora has glossy green, veined leaves, whose flowering stem can reach a height of {{convert|70|-|120|cm|0|abbr=on}}. The pale yellow bell-shaped flowers are spaced out on the stem, {{convert|3|-|4|cm|0|abbr=on}} long and show a netted brown marking in their interior.{{cite book|title=RHS A-Z encyclopedia of garden plants|year=2008|publisher=Dorling Kindersley|location=United Kingdom|isbn=978-1405332965|pages=1136}} In the wild, plants bloom in June and July.{{cite book|author=Tomasz Ani_ko|title=When Perennials Bloom: An Almanac for Planning and Planting|url=https://books.google.com/books?id=ODYpMZXFnSQC&pg=PA173|date=1 January 2008|publisher=Timber Press|isbn=978-0-88192-887-7|pages=173–}}
Cultivation
Digitalis grandiflora is long lived perennial, it has gained the Royal Horticultural Society's Award of Garden Merit.{{cite web|title=Digitalis grandiflora|url=
https://www.rhs.org.uk/Plants/5856/Digitalis-grandiflora/Details | accessdate=27 May 2020}}{{cite web | url= https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017 | page = 29 | publisher = Royal Horticultural Society | accessdate = 6 February 2018}} It is winter hardy is USDA zones 3 to 8 and grows best in moisture retentive, but well drained, organic soils in part shade.{{Cite web|url=http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c628|title = Digitalis grandiflora - Plant Finder}} Cultivated plants in Germany bloom from June to August, in North America, flowering occurs from May to June in Missouri and from June to July in Ohio; with the typical bloom period lasting eight weeks.
=Cultivars=
Hybrids
- Digitalis × fulva, Lindl. 1821
(Hybrid formula: Digitalis grandiflora Mill. × Digitalis purpurea L.).
Pharmacology
As the plant contains cardenolides, all parts are toxic. Its leaves contain 0.2% glycosides of the digitoxin-type and about 0,1% of the digoxin-type. Even so, the plant is not used in the production of cardiac glycosides.
Gallery
File:Digitalis_grandiflora02072006.JPG|plant
File:Großblütiger Fingerhut-Blüten.JPG|flowers
File:Digitalis_grandiflora_BotGardBln1105FruitsA.jpg|fruits
References
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