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Sclerocactus wrightiae L. D. Benson
WRIGHTS FISHHOOK CACTUS
Life   Plantae   Dicotyledoneae   Cactaceae   Sclerocactus


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FNA | Family List | FNA Vol. 4 | Cactaceae | Sclerocactus

2. Sclerocactus wrightiae L. D. Benson, Cact. Succ. J. (Los Angeles). 38: 55, figs. 5, 6. 1966.

Wright's cactus, Wright's fishhook cactus

Ferocactus wrightiae (L. D. Benson) N. P. Taylor; Pediocactus wrightiae (L. D. Benson) Arp

Stems usually unbranched, usually pale green, depressed-spheric, spheric or short cylindric, (1-)4-8(-11) × 4-8 cm; ribs 13-16, tubercles often evident on ribs. Spines slightly or not obscuring stem; radial spines 5-10(-14) per areole, pale to white, 6-17(-20) mm; central spines (3-)4 per areole, terete to angled; abaxial central spine 1 per areole, white to tan with tan to black tips, hooked, 10-30(-44) × 0.5-1 mm; lateral adaxial spines 2 per areole, white or brown to reddish brown or black, 10-21(-35) × 0.8-1.5 mm; adaxial central spine white, flat to angled, 6-27(-35) × 5-15 mm. Flowers fragrant, funnelform to campanulate, sometimes narrowly so, (2-)3-4 × 2-4 cm; outer tepals with reddish brown midstripes and white to cream or pinkish margins, oblanceolate, 13-23 × 3-7 mm; inner tepals white to cream or pink, oblanceolate, 25-30 × 5-7 mm; filaments magenta; anthers yellow. Fruits irregularly dehiscent, ovoid, barrel-shaped, 9-15 × 7-12 mm, scales few or absent; ovary papillate, appearing granular. Seeds black, 2 × 3.5 mm, testa with rounded papillae.

Flowering late Apr-May. Exposed, highly alkaline, often bare clay hills, desert grasslands or saltbush flats; of conservation concern; 1300-1800 m; Utah.

Sclerocactus wrightiae displays considerable morphologic variation, presumably due to introgression with S. parviflorus ; however, it can usually be recognized by its noticeably fragrant flowers with pink to white tepals, and magenta staminal filaments. Although S. wrightiae generally has smaller stems and flowers and shorter spines than S. parviflorus , there are many exceptions.

Sclerocactus wrightiae is known to occur only near the Fremont River and San Rafael Swell in Utah. Exploitation by cactus collectors is partly responsible for its scarcity.

Sclerocactus wrightiae is in the Center for Plant Conservation's National Collection of Endangered Plants.

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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Sclerocactus+wrightiae&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Sclerocactus+wrightiae&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

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Number of matches : 8
Query: SELECT * FROM img WHERE ready=1 and taxon like "Sclerocactus wrightiae%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Sclerocactus wrightiae
Sclerocactus wrightiae
ID: 0000 0000 0111 1716 [detail]
© 2011 Dr. Jürgen Menzel

Sclerocactus wrightiae
Sclerocactus wrightiae
ID: 0000 0000 0111 1718 [detail]
© 2011 Dr. Jürgen Menzel

Sclerocactus wrightiae
Sclerocactus wrightiae
ID: 0000 0000 0111 1719 [detail]
© 2011 Dr. Jürgen Menzel

Sclerocactus wrightiae
Sclerocactus wrightiae
ID: 0000 0000 0111 1721 [detail]
© 2011 Dr. Jürgen Menzel

Sclerocactus wrightiae
Sclerocactus wrightiae
Wright's Pincushion Cactus
ID: 0000 0000 1212 0885 [detail]
© 2012 Nicholas Jensen

Sclerocactus wrightiae
Sclerocactus wrightiae
Wright's Pincushion Cactus
ID: 0000 0000 1212 0886 [detail]
© 2012 Nicholas Jensen

Sclerocactus wrightiae
Sclerocactus wrightiae
Wright's Fishhook Cactus
ID: 6666 6666 1014 0015 [detail]
Gerald and Buff Corsi
© 2014 California Academy of Sciences

Sclerocactus wrightiae
Sclerocactus wrightiae
Wright's Fishhook Cactus
ID: 6666 6666 1014 0016 [detail]
Gerald and Buff Corsi
© 2014 California Academy of Sciences

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


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