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Helichrysum petiolare

(Helichrysum)

Overview

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Interesting Facts

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Common Names

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Common Names in English:

Helichrysum, Licorice Plant, Licorice-Plant, Trailing Dusty Miller

Description

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Family Compositae

The largest family of flowering plants , the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many small flowers arranged in a head looking like a single flower and subtended by an involucre of bracts. A head may consist of both ray flowers and disk flowers, as in the sunflower, of disk flowers only, as in the burdock, or of ray flowers only, as in the dandelion.

Genus Helichrysum

[Annuals , biennials, perennials ,] subshrubs , or shrubs (often aromatic ), mostly 20-80 cm; taprooted. Stems usually 1, usually erect , sometimes decumbent to procumbent (± woolly-tomentose, usually stipitate- or sessile-glandular as well) . Leaves cauline; alternate; petiolate [sessile]; blades ovate [spatulate to lanceolate or linear ], bases cuneate to truncate [usually clasping and/or decurrent], margins entire (sometimes revolute ), faces concolor [bicolor], usually gray to white and tomentose or sericeous [adaxial sometimes greenish and glabrescent ], sometimes stipitate- or sessile-glandular as well. Heads disciform or discoid , in glomerules in corymbiform arrays. Involucres campanulate , 4-8 mm. Phyllaries in 3-5[-7] series, whitish [stramineous , orange, reddish, or pinkish] (opaque or hyaline , usually shiny; stereomes green, usually sessile-glandular distally) . Receptacles flat, glabrous , epaleate. Peripheral (pistillate ) florets 0 or 1-2 (fewer than bisexual ) : corollas yellowish. Inner (bisexual) florets 3-30[-50+]; corollas usually yellowish. Cypselae ± columnar , faces usually smooth , sometimes papillate (roughened by raised, imbricate tips of epidermal cells ), sometimes with 4-6 longitudinal ridges , glabrous [± strigose or myxogenic, papilliform hairs ]; pappi readily falling, of 12-20 distinct or loosely coherent basally, barbellate [subplumose] bristles in 1 series. x = 7.

Species about 600: introduced ; mostly Old World, especially s Africa and Madagascar.[1]

Physical Description

Species Helichrysum petiolare

Shrubs or subshrubs , aromatic , to 60 cm. Stems loosely branched, straggling. Leaves petiolate ; blades ovate , 1-2 cm, apices obtuse to subacute , faces concolor , silvery green, woolly-tomentose. Phyllaries creamy white. [source]

The name Helichrysum petiolatum D. Don has been misapplied to plants of H. petiolare. [source]

Habit: Shrub , Vine

Flowers: Bloom Period: May, June, July. • Flower Color: cream, inconspicuous, none, tan

Size/Age/Growth

Size: 12-18" tall.

Landscaping

Landscape Uses: Wonderful foliage filler for containers . Can be used in beds . • Care: Protect from hottest afternoon sun. High humidity at night can be a problem.

Habitat

"Shrubby plants forming a dense thicket on the slope of Bolinas Ridge above Stinson Beach" (J. T. Howell 1970); 300-600 m (Ref. 101085).

Typically found in the intertidal zone at the water's edge at a mean distance from sea level of 22 meters (73 feet).[2]

Biome: Coastal.

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 24-36" apart.

Sunlight: Sun Exposure: Sun to Partial Shade.

Moisture: Drought Tolerance: High

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

Taxonomy

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Synonyms

Hedysarum albiflorum (Macoun)b. Fedtsch. • Hedysarum boreale var. albiflorum Macoun • Hedysarum boreale var. flavescens (J. M. Coult. & Fisher)b. Fedtsch. • Hedysarum flavescens J. M. Coult. & Fisher

Notes

Name Status: Accepted Name .

Comment: Data Providers: African Flowering Plants Database , SANBI, New Zealand Plant Name Database, LCR Editor, IPNI, Tropicos, Euro+Med. GCC LSID: urn :lsid:compositae.org:names:56BD2923-DC15-4134-B870-0B8A9333C581

Last scrutiny: 13-Aug-09

Similar Species

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Members of the genus Helichrysum

ZipcodeZoo has pages for 47 species, subspecies, varieties, forms, and cultivars in this genus:

H. adenophorum (Branched Everlasting) · H. angustifolium (Curry Plant) · H. angustifolium 'Nana' (Curry Plant) · H. arenarium (Everlasting Flower) · H. argyrophyllum (Golden Guinea Flower) · H. bellidioides (New Zealand Strawflower) · H. bracteatum (Bracted Strawflower) · H. bracteatum 'Pink Glow' (Everlasting Daisy) · H. bracteatum 'Salsa' (Everlasting Daisy) · H. bracteatum 'Silvery Rose' (Everlasting Daisy) · H. bracteatum 'Sundaze Bronze' (Everlasting Daisy) · H. bracteatum 'Sundaze Flame' (Everlasting Daisy) · H. bracteatum 'Sundaze Golden Beauty' (Everlasting Daisy) · H. bracteatum 'Sundaze Golden Yellow' (Everlasting Daisy) · H. bracteatum 'Sundaze Pink' (Everlasting Daisy) · H. bracteatum 'Sundaze White' (Everlasting Daisy) · H. bracteatum 'Sundaze Yellow' (Everlasting Daisy) · H. bracteatum 'Tall Double Mix' (Everlasting Daisy) · H. bracteatum 'Victorian Blush' (Everlasting Daisy) · H. bracteatum 'Wallaby Flame' (Everlasting Daisy) · H. elatum (Irontree) · H. foetidum (Stinking Ever-Lasting) · H. fontanesii (Everlasting) · H. formosissimum (Everlasting-Flower) · H. heldreichii (Helichrysum) · H. italicum italicum (Curry Plant) · H. leucopsideum (Satin Everlasting) · H. melitense (Maltese Everlasting) · H. milfordiae (Alpine Everlasting) · H. petiolare (Helichrysum) · H. petiolare 'Lemon' (Helichrysum) · H. petiolare 'Licorice Splash' (Variegated Licorice Plant) · H. petiolare 'Limelight' (Helichrysum) · H. petiolare 'Petite' (Helichrysum) · H. petiolare 'Splash' (Helichrysum) · H. petiolare 'Variegata' (Helichrysum) · H. petiolare 'White Licorice' (Helichrysum) · H. roseum 'Pierrot' (Crisp Everlasting) · H. rutidolepis (Pale Everlasting) · H. scorpioides (Button Everlasting) · H. stoechas (Curry Plant) · H. thianschanicum 'Icicle' (Helichrysum) · H. 'Dreamtime Jumbo White' (White Strawflower) · H. 'Dreamtime Jumbo Yellow' (Yellow Strawflower) · H. 'Ruby Cluster' (Straw Flower) · H. 'Silver Mist' (Dwarf Licorice Plant) · H. 'Sulphur Light' (Sulphur Light Perennial Strawflower)

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 25, 2007:

Identifiers

Footnotes

  1. Guy L. Nesom "Helichrysum". in Flora of North America Vol. 19, 20 and 21 Page 59, 384, 387, 425. Oxford University Press. Online at EFloras.org. [back]
  2. Standard Deviation = 134.930 based on 20 observations. Terrestrial altitude and ocean depth information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012