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Asparagus densiflorus

(Asparagus Fern)

Overview

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Generally prickly climber from S. Africa, with narrow, flattened "leaves" (actually cladodes) in clusters of 1-3; foliage generally not in flattened sprays . Flowers tiny, white or pinkish, several, in dense clusters; fruits red. Important foliage plant for floral arrangements ; several varieties are used (e.g. cv. 'Springeri').

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Chinese:

Fei Zhou Tian Men Dong

Common Names in Danish:

Hængeasparges

Common Names in English:

Asparagus Fern, Bushy Asparagus, Coarse Asparagus Fern, Emerald Feather, Foxtail Fern, Myers Asparagus, Protasparagus, Sprenger Asparagus, Sprenger´s Asparagus Fern, Sprenger's Asparagus Fern, Sprengeri´s Fern

Common Names in French:

Asperge De Sprenger, Cheveux De Madeleine (Reunion)

Common Names in Informal Latinized N:

Asparagus Fern

Common Names in Japanese:

Asuparagasu Denshifurorusu

Description

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Genus Asparagus

Herbs, shrubs , or vines , perennial , from rhizomes, usually with fusiform tubers, often with fernlike appearance . Stems photosynthetic, erect , spreading or climbing , branched; cladophylls solitary or fasciculate, in nodes of reduced, scarious leaves. Leaves small, scale-like, membranous, or sometimes spiny with hardened base , subtending cladophylls. Inflorescences axillary or terminal , racemose, or umbellate , paired or solitary; racemes short. Flowers bisexual or unisexual ; perianth greenish, white, or yellowish, campanulate to rotate; tepals 6, distinct or shortly connate basally, equal; stamens 6, distinct, equal; anthers versatile, 2-locular, dehiscence introrse ; ovary superior, 3-locular, septal nectaries present; style 3-branched distally; pedicel with conspicuous joint . Fruits baccate , red or purplish black, globose , often with tepals persisting at base. Seeds 1-6, black, globose to angular. x = 10.

Species 170-300: introduced ; Europe, Asia, Africa; some widely introduced, expected elsewhere.

Asparagus is a moderately important horticultural genus, with one species commonly grown for its edible young shoots and a number of others grown ornamentally. The genus is treated here in a broad sense (K . Kubitzki and P. J. Rudall 1998; W. S. Judd 2001) and encompasses species that have been segregated in several genera (A. L. Takhtajan 1997; S. T. Malcomber and Sebsebe D. 1993). Embryological features (P. J. Rudall et al. 1998) and DNA-based analyses (M. W. Chase et al. 1996; M. F. Fay et al. 2000; P. J. Rudall et al. 1997) support the monophyly of Asparagus and the Asparagaceae.[1]

Physical Description

Species Asparagus densiflorus

Subshrubs hermaphroditic . Stems ± climbing , branched, to 1 m ; branches distinctly striate-ridged. Cladodes in fascicles of 1--5, linear , 1--3 cm × 1.5--2.5 mm, flat. Leaf spur spinescent ; spine slightly hooked , 3--5 mm and sharp on main stems , very short and not sharp on branches, woody. Inflorescences developing after cladodes, solitary or paired , axillary , each a many-flowered raceme or panicle 2--2.5 cm; bracts linear, 2--5 mm. Pedicel ca. 2 mm, articulate at middle . Perianth white; segments oblong-ovate, ca. 2 mm. Stamens shorter than perianth; anthers minute. Berry red, 8--10 mm in diam., 1- or 2-seeded. Fl. throughout year. 2 n = 40, 60. [source]

Flowers: Bloom Period: June. • Flower Color: near white, white

Size/Age/Growth

Size: 18-24" tall.

Habitat

Commonly cultivated and occasionally becoming naturalized [native to S Africa][2].

Biology

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Growth

Culture: Space 36-48" apart.

Soil: Minimum pH: 6.1 • Maximum pH: 7.5

Sunlight: Sun Exposure: Sun to Partial Shade.

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

Taxonomy

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Synonyms

Asparagopsis densiflora Kunth • Asparagus sprengeri Regel. • Enum. Pl. 5: 96. 1850 • Protasparagus Densiflorus

Notes

Publishing author : Jessop Publication : Bothalia ix. 65 (1966)

Basionym author: (Kunth)

Similar Species

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Members of the genus Asparagus

ZipcodeZoo has pages for 52 species, subspecies, varieties, forms, and cultivars in this genus:

A. acerosus (Wild Asparagus) · A. acutifolius (Lesser Asparagus) · A. africanus (African Asparagus) · A. aphyllus (Israel Wild Asparagus) · A. asparagoides (African Asparagus Fern) · A. declinatus (Bridal Veil) · A. densiflorus (Asparagus Fern) · A. densiflorus 'Meyersii' (Meyersii Foxtail Fern Asparagus Densiflorus) · A. densiflorus 'Myersii' (Myer's Foxtail Fern) · A. densiflorus 'Sprengeri Compacta' (Compact Sprenger Asparagus Fern) · A. denudatus (Asparagus Fern) · A. draco (Canary Island Dragon Tree) · A. falcatus (Asparagus Fern) · A. filicinus (Fern Asparagus) · A. graminifolius (Lilyturf) · A. macowanii (Ming Fern) · A. officinalis officinalis (Asparagus) · A. officinalis prostratus (Wild Asparagus) · A. officinalis 'Ariane' (Asparagus 'ariane') · A. officinalis 'Bejo 2241' (Asparagus 'bejo 2241') · A. officinalis 'Bejo 2245' (Asparagus 'bejo 2245') · A. officinalis 'Millenium' (Asparagus) · A. officinalis 'Raffaelo' (Asparagus 'raffaelo') · A. officinalis 'Ramires' (Asparagus 'ramires') · A. pyramidalis (Asparagus Fern) · A. racemosus (Indian Asparagus) · A. scandens (Climbing Asparagus) · A. setaceus (Asparagus Fern) · A. tenuifolius (Narrow-Leaved Asparagus) · A. terminalis (Chinese Colli) · A. verticillatus (Climbing Asparagus) · A. virgatus (Broom Fern) · A. 'Apollo' (Hybrid Asparagus) · A. 'Atlas' (Asparagus) · A. 'Connover's Colossal' (Asparagus) · A. 'Dariana' (Asparagus) · A. 'French Market' (Asparagus) · A. 'Golia' (Asparagus) · A. 'Grande' (Hybrid Asparagus) · A. 'Ida Lea' (Asparagus) · A. 'Jersey Gem' (Hybrid Asparagus) · A. 'Jersey Giant' (Hybrid Asparagus) · A. 'Jersey King' (Hybrid Asparagus) · A. 'Jersey Knight' (Hybrid Asparagus) · A. 'Jersey Supreme' (Hybrid Asparagus) · A. 'Marte' (Asparagus) · A. 'Martha Washington' (Hybrid Asparagus) · A. 'Mary Washington' (Mary Washington Hybrid Asparagus Asparagus) · A. 'Precoce D'argenteuil' (Asparagus) · A. 'Purple Passion' (Asparagus) · A. 'Theilim' (Asparagus) · A. 'Uc 157' (Hybrid Asparagus)

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 17, 2007:

Identifiers

Footnotes

  1. Gerald B. Straley  & Frederick H. Utech "Asparagus". in Flora of North America Vol. 26 Page 20, 50, 53, 54, 213. Oxford University Press. Online at EFloras.org. [back]
  2. "Asparagus densiflorus". in Flora of China Vol. 24 Page 210. Missouri Botanical Garden Press. Online at EFloras.org. [back]
Last Revised: 7/15/2012