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Asphodelus fistulosus

(Asphodel)

Overview

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Interesting Facts

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Common Names

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Common Names in English:

Asphodel, Onion-Leaved Asphodel, Onion-Weed, Onionweed, Pink Asphodel

Description

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Subfamily Faboideae

Mostly herbs, shrubs , or trees . Leaves pinnate or palmate to trifoliolate or apparently simple . Corolla usually, showy, zygomorphic, the petals imbricate, posterior (upper or banner ) petal outermost in bud. Stamens 10 or 9 + 1 (diadelphous ), not showy. Pollen released in monads . Seeds with u-shaped line (pleurogram) lacking. [Carr]

Genus Asphodelus

Herbs, annual or perennial [or biennial], scapose , from swollen rhizomes. Leaves numerous , basal; blade linear , cylindrical [or flat], base membranous, sheathing , margins entire. Scape hollow [or solid]. Inflorescences racemose or paniculate , many-flowered, bracteate ; bracts persistent , narrowly lanceolate, scarious . Flowers: tepals 6, erect to spreading , distinct or barely connate basally, equal, each with single prominent vein ; stamens 6, distinct, subequal [or equal], shorter than tepals; filaments expanded at base; anthers dorsifixed ; ovary 3-locular, ovules 1 or 2 per locule; septal nectaries present; style 1; stigma weakly 3-lobed; pedicel articulate . Fruits capsular , globose , hard, dehiscence loculicidal. Seeds 3 or 6, black, angled [or winged ]. x = 13, 14.

Species 12: introduced ; sw Europe, n Africa, sw Asia (India) ; widely introduced elsewhere.

Sometimes placed in the segregate family Asphodelaceae, Asphodelus occurs mainly throughout the Mediterranean region, the Middle and Near East, and central Asia. Asphodelus ramosus Linnaeus has been collected once in the flora from ballast in New Jersey in 1879.[1]

Physical Description

Species Asphodelus fistulosus

Plants annuals or short-lived perennials ; root crowns thickened with many fibrous roots . Stems branched or unbranched, 20-70 cm. Leaves 5-35 cm × 2-4 mm; blade cylindrical or slightly flattened adaxially, hollow, glabrous except on margins . Inflorescences simple racemes to open panicles with ascending branches, 15-70 cm; bracts white, 4-7 mm. Flowers diurnal , closing in evening and during cloudy weather; tepals white to pale pink, oblong , obtuse , 5-12 × 2-3 mm, vein dark pink or brown; longest stamens equaling style. Capsules 5-7 mm, transversely wrinkled. Seeds 3-4 mm, rugose . 2n = 28, 56. Flowering late winter--spring. [source]

Habit: Forb/herb

Flowers: Bloom Period: January, February, March, April, May, June, July, August, September, October, November, December. • Flower Color: near white, white

Size/Age/Growth

Size: 12-18" tall.

Habitat

Roadsides, fields , waste places; 0--1400 m.

Typically found at an altitude of 0 to 4,212 meters (0 to 13,819 feet).[2]

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 15-18" apart.

Soil: Minimum pH: 5.1 • Maximum pH: 9.0

Sunlight: Sun Exposure: Full Sun .

Moisture: Drought Tolerance: High

Temperature: Cold Hardiness: 8a, 8b, 9a, 9b, 10a, 10b, 11. (map)

Taxonomy

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Notes

Publishing author : L. Publication : Species Plantarum 1753 (1 May 1753)

Similar Species

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Members of the genus Asphodelus

ZipcodeZoo has pages for 5 species, subspecies, varieties, forms, and cultivars in this genus:

A. aestivus (Gamon) · A. albus (Asphodel) · A. capensis (Bracketplant) · A. fistulosus (Asphodel) · A. ramosus (Kings Spear)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 28, 2007:

Identifiers

Footnotes

  1. Gerald B. Straley  & Frederick H. Utech "Asphodelus". in Flora of North America Vol. 26 Page 57, 218. Oxford University Press. Online at EFloras.org. [back]
  2. Mean = 745.830 meters (2,446.949 feet), Standard Deviation = 629.510 based on 386 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/14/2012