Hemerocallis fulva
Common names
day lily, orange day lily
Biostatus
Exotic
Category
Vascular
Structural class
Herbs - Monocots
Simplified description
Flowers yellow, red or orange, with single or double rows of petals (tepals); each flower remains open for a single day. Plant deciduous (summer-green); roots tuberous.
Reported to be of hybrid origin (see https://www.oardc.ohio-state.edu/weedguide/singlerecord.asp?id=180).
Flower colours
Orange, Red/Pink, Yellow
Detailed description
Large clump-forming, rhizome spreading. Leaves 40-70-(90x 1-3 cm, linear, equitant, later drooping, margins smooth. Inflorescence corymbose, to 15-flowered; scape stiff, bracteate, usually branched. Flowers 8-10 cm long, to 9 cm diam., widely funnel-shaped (often doubled), dull orange-red or yellow or red, strongly veined, not scented; pedicels short; bract scarious, <pedicel; perianth-tube very short; lobes recurved, inner broader with undulate margins. Ovary and ovules aborted (Healy and Edgar 1980).
“A 3-sectioned capsule is produced. Since this species is a hybrid, most plants do not produce seeds, but if produced, seeds are rarely viable.” https://www.oardc.ohio-state.edu/weedguide/singlerecord.asp?id=180
Conservation status
Not applicable
Detailed taxonomy
Family
Taxonomic notes
Hemerocallis is sometimes placed in Family Xanthorrhoeaceae
Ecology
Flowering
December-January
Year naturalised
1958
Origin
Origin uncertain, cultivated for several centuries in Northern Hemisphere
Reason for introduction
Ornamental
Life cycle and dispersal
No seed produced. Spread by rhizomes.
Other information
Etymology
hemerocallis: From the Greek hemeros ‘day’ and kallos ‘beauty’
fulva: Tawny yellow