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Erysimum cheiranthoides

(Treacle Wallflower)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in English:

Treacle Wallflower, Wallflower Mustard, Worm-Seed Wallflower, Wormseed Mustard, Wormseed Wallflower

Common Names in Portuguese:

Mostarda-Viscosa

Description

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Genus Erysimum

Herbs annual , biennial, or perennial , rarely subshrubs or shrubs . Trichomes sessile, medifixed , appressed , malpighiaceous or 3-5(-8) -rayed stellate . Stems simple or branched basally and/or apically. Basal leaves petiolate , rosulate, simple, entire or dentate , rarely pinnatifid or pinnatisect . Cauline leaves petiolate or sessile, cuneate or attenuate at base , rarely auriculate , entire or dentate. Racemes ebracteate or basally bracteate , rarely bracteate throughout, corymbose , elongated or not in fruit. Fruiting pedicels slender or thickened and nearly as wide as fruit, erect , ascending , divaricate , or reflexed . Sepals oblong or linear , erect, pubescent , base of lateral pair saccate or not. Petals yellow or orange, rarely white, pink, purple, or violet; blade suborbicular , obovate , spatulate , or oblong, apex rounded or emarginate ; claw differentiated from blade, subequaling or longer than sepals. Stamens 6, erect, tetradynamous ; anthers oblong or linear. Nectar glands 1, 2, or 4, distinct or confluent and subtending bases of all stamens; median glands present or absent. Ovules 15-100 per ovary. Fruit dehiscent siliques or rarely silicles , linear or rarely oblong, terete , 4-angled, latiseptate , or angustiseptate, sessile or rarely shortly stipitate ; valves with an obscure to prominent midvein , pubescent on outside, rarely also on inside, keeled or not, smooth or torulose ; replum rounded; septum complete , membranous, translucent or opaque , veinless; style obsolete or short, rarely half as long as or subequaling fruit, often pubescent; stigma capitate, entire or 2-lobed. Seeds uniseriate or rarely biseriate , winged , margined , or wingless, oblong, plump or flattened; seed coat minutely reticulate , mucilaginous when wetted; cotyledons incumbent or rarely accumbent .

About 150 species: N hemisphere, primarily in Asia and Europe, with 14 species in Central and North America and eight species in N Africa and Macaronesia; 17 species (five endemic) in China.[1]

Physical Description

Species Erysimum cheiranthoides

Herbs annual , (7-) 15-100(-150) cm tall. Trichomes primarily 3- or 4-fid, sometimes mixed with 5-fid ones, malpighiaceous trichomes primarily on stem and pedicels. Stems erect , often branched above, ribbed . Basal leaves rosulate, withered by fruiting. Middle and upper cauline leaves shortly petiolate or sessile; leaf blade lanceolate, linear , or elliptic-oblong, (1-) 2-7(-11) cm × (2-) 5-10(-20) mm, base cuneate, margin subentire or denticulate , rarely sinuate-dentate, apex acute or obtuse . Racemes corymbose , densely flowered, ebracteate , elongated considerably in fruit. Fruiting pedicels divaricate or ascending , 5-13(-16) mm, slender, much narrower than fruit. Sepals oblong , 1.8-3 × 0.5-1 mm, not saccate . Petals yellow, narrowly spatulate , 3-5 × 1.5-2 mm, apex rounded ; claw distinct , subequaling sepals. Filaments yellow, 2-3.5 mm; anthers oblong, 0.5-0.7 mm. Ovules (20-) 30-55 per ovary. Fruit linear, 4-angled, (1-) 1.5-2.5(-4) cm × 1-1.3 mm, somewhat torulose , suberect or divaricate-ascending, straight; valves with a distinct midvein, outside with 3-5-forked trichomes, inside densely pubescent ; style slender, 0.5-1.5 mm, cylindric ; stigma slightly 2-lobed. Seeds oblong, 1-1.5 × 0.4-0.6 mm. Fl. May-Aug, fr. Jun-Sep. 2n = 16. [source]

Records in FRPS of Erysimum cheiranthoides from provinces and autonomous regions other than the ones listed above are likely based on misidentified plants of E. macilentum. The two species are quite distinct and are easily distinguished by the characters in the above key. [source]

Although the present authors have not examined the type of Erysimum brevifolium, it is almost certain that the species is a synonym of either E. cheiranthoides or E. macilentum because in the protologue the interior of the fruit valves was described as densely stellate . It is here placed in the synonymy of E. cheiranthoides based on the shape of the petals, which were said to be narrowly obovate ; in E. macilentum the petals are linear to linear-oblanceolate. [source]

Habit: Forb/herb

Flowers: Bloom Period: April, May. • Flower Color: yellow

Size/Age/Growth

Size: 24-36" tall.

Habitat

Dry beds , moist areas; 800-3000 m [2].

Typically found at an altitude of 0 to 4,091 meters (0 to 13,422 feet).[3]

Biology

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Reproduction

Duration: Annual , Biennial

Growth

Sunlight: Sun Exposure: Full sun .

Taxonomy

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Synonyms

Cheiranthus cheiranthoides (L.) A. Heller • Cheirinia cheiranthoides (L.) Link • E. cheiranthoides var. japonicum H. Boissieu • E. japonicum (H. Boissieu) Makino • E. parviflorum Persoon. • Erysimum brevifolium Z. X. An • Erysimum cheiranthoides altum Ahti

Notes

Name Status: Accepted Name .

Last scrutiny: 2009

Similar Species

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Members of the genus Erysimum

ZipcodeZoo has pages for 71 species, subspecies, varieties, forms, and cultivars in this genus:

E. ammophilum (Coast Wallflower) · E. angustatum (Contra Coasta Wallflower) · E. arenicola (Cascade Wallflower) · E. arenicola S.Watson var. arenicola S.Watson (Cascade Wallflower) · E. arenicola S.Watson var. torulosum (Piper) C.L.Hitchc. (Cascade Wallflower) · E. arenicola var. arenicola (Cascade Wallflower) · E. arenicola var. torulosum (Cascade Wallflower) · E. capitatum (Alpine Wallflower) · E. capitatum subsp. angustatum (Contra Costa Wallflower) · E. capitatum angustatum var. angustatum (Western Wallflower) · E. capitatum var. angustatum (Contra Costa Wallflower) · E. capitatum var. bealianum (Sanddune Wallflower) · E. capitatum var. capitatum (Sanddune Wallflower) · E. capitatum var. lompocense (San Luis Obispo Wallflower) · E. capitatum var. lompocense (G.Rossb.) Kartesz, comb. nov. ined. (San Luis Obispo Wallflower) · E. capitatum var. perenne (Sanddune Wallflower) · E. capitatum var. purshii (Purshs Wallflower) · E. cheiranthoides (Treacle Wallflower) · E. cheiri (Aegean Wallflower) · E. cheiri 'Blood Red' (English Wallflower) · E. cheiri 'Fair Lady Mix' (English Wallflower) · E. cheiri 'Harpur Crewe' (English Wallflower) · E. cheiri 'Ivory White' (English Wallflower) · E. cheiri 'Jane's Derision' (Aegean Wallflower) · E. cheiri 'Persian Carpet Mix' (English Wallflower) · E. cheiri 'Ruby Gem' (English Wallflower) · E. cheiri 'Vulcan' (English Wallflower) · E. durum (Hard Wallflower) · E. franciscanum (San Francisco Wallflower) · E. franciscanum var. franciscanum (San Francisco Wallflower) · E. glandulosum (Jewelflower) · E. helveticum (Tufted Wallflower) · E. hieraciifolium (European Wallflower) · E. hirsutum (Hairy Rockcress) · E. holboellii (Holboell's Rockcress) · E. inconspicuum (Shy Wallflower) · E. inconspicuum (S.Watson) MacM. var. coarctatum (Fern.) G.Rossb. (Shy Wallflower) · E. inconspicuum var. coarctatum (Shy Wallflower) · E. inconspicuum var. inconspicuum (Shy Wallflower) · E. insulare (Island Wallflower) · E. insulare insulare (Island Wallflower) · E. insulare suffrutescens (Island Wallflower) · E. kotschyanum (Kotschy Erysimum) · E. linifolium (Alpine Wallflower) · E. linifolium 'Julian Orchard' (Alpine Wallflower) · E. linifolium 'Variegatum' (Variegated Wallflower) · E. linifolium 'Wenlock Beauty' (Alpine Wallflower) · E. menziesii (Coast Wallflower) · E. menziesii menziesii (Coast Wallflower) · E. menziesii yadonii (Menzies' Wallflower) · E. occidentale (Pale Wallflower) · E. odoratum (Smelly Wallflower) · E. pallasii (Pallas Wallflower) · E. pallasii var. bracteosum (Pallas' Wallflower) · E. pallasii var. ochroleucum (Pallas' Wallflower) · E. pallasii var. pallasii (Pallas' Wallflower) · E. perofskianum (Afghan Erysimum) · E. perofskianum 'Gold Shot' (Afghan Erysimum) · E. repandum (Repand Wallflower) · E. suffrutescens var. suffrutescens (Shrubby Wallflower) · E. teretifolium (Ben Lomond Wallflower) · E. xmarshallii (Siberian Wallflower) · E. x marshallii (Siberian Wallflower) · E. 'Apricot Twist' (Perennial Wallflower) · E. 'Bowles' Mauve' (Bowles' Mauve Perennial Wallflower) · E. 'Cotswold Gem' (Perennial Wallflower) · E. 'Fragrant Sunshine' (Perennial Wallflower) · E. 'John Codrington' (Perennial Wallflower) · E. 'Pastel Patchwork' (Perennial Wallflower) · E. 'Plant World Gold' (Perennial Wallflower) · E. 'Plant World Lemon' (Perennial Wallflower)

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 14, 2007:

Identifiers

Footnotes

  1. Zhou Taiyan (Cheo Tai-yien, Lu Lianli (Lou Lian-li, Yang Guang, Vladimir I. Dorofeyev, Ihsan A. Al-Shehbaz "Erysimum". in Flora of China Vol. 8 Page 163. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Erysimum cheiranthoides". in Flora of China Vol. 8 Page 168. Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. Mean = 190.610 meters (625.361 feet), Standard Deviation = 254.460 based on 7,821 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012