Difference between revisions of "Pediocactus sileri"
Cact. Succ. J. (Los Angeles) 33: 53. 1961.
Common names: Gypsum cactus Siler’s pincushion cactus
Basionym: Echinocactus sileri Engelmann ex J. M. Coulter
Synonyms: Utahia sileri (Engelmann ex J. M. Coulter) Britton & Rose
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>few branched or unbranched. <b>Stems</b> depressed-ovoid or occasionally elongate-cylindric, 5–15(–25) × 6–11.5 cm; areoles circular to pyriform, villous to lanate. <b>Spines</b> distinguishable as radial and central: radial spines 11–15 per areole, white, 11–21 mm; central spines 3–7 per areole, nearly porrect, brownish black aging to pale gray or white, straight or slightly curving at tips, 13–30 × 1 mm at base. <b>Flowers</b> 0.8–2.2 × 2–3 cm; scales long fringed; outer tepals brown with white margins, long fringed, 9–15 × 3–4.5 mm; inner tepals yellow with purple veins, 15–20 × 4.5–6 mm. <b>Fruits</b> greenish yellow, short cylindric, 12–15 × 6–9 mm. <b>Seeds</b> gray to nearly black, 3.5–5 × 3–3.5 mm, papillate and rugose.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Flowering spring. | ||
|habitat=Rounded hills in gypsum clay and sandy soils of Moenkopi Formation, Great Basin desert scrub | |habitat=Rounded hills in gypsum clay and sandy soils of Moenkopi Formation, Great Basin desert scrub | ||
|elevation=900-1600 m | |elevation=900-1600 m | ||
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|basionyms=Echinocactus sileri | |basionyms=Echinocactus sileri | ||
|family=Cactaceae | |family=Cactaceae | ||
| + | |phenology=Flowering spring. | ||
|habitat=Rounded hills in gypsum clay and sandy soils of Moenkopi Formation, Great Basin desert scrub | |habitat=Rounded hills in gypsum clay and sandy soils of Moenkopi Formation, Great Basin desert scrub | ||
|elevation=900-1600 m | |elevation=900-1600 m | ||
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|publication year=1961 | |publication year=1961 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V4/V4_394.xml |
|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Pediocactus | |genus=Pediocactus | ||
|species=Pediocactus sileri | |species=Pediocactus sileri | ||
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-->[[Category:Treatment]][[Category:Pediocactus]] | -->[[Category:Treatment]][[Category:Pediocactus]] | ||
Revision as of 14:09, 27 July 2019
Plants few branched or unbranched. Stems depressed-ovoid or occasionally elongate-cylindric, 5–15(–25) × 6–11.5 cm; areoles circular to pyriform, villous to lanate. Spines distinguishable as radial and central: radial spines 11–15 per areole, white, 11–21 mm; central spines 3–7 per areole, nearly porrect, brownish black aging to pale gray or white, straight or slightly curving at tips, 13–30 × 1 mm at base. Flowers 0.8–2.2 × 2–3 cm; scales long fringed; outer tepals brown with white margins, long fringed, 9–15 × 3–4.5 mm; inner tepals yellow with purple veins, 15–20 × 4.5–6 mm. Fruits greenish yellow, short cylindric, 12–15 × 6–9 mm. Seeds gray to nearly black, 3.5–5 × 3–3.5 mm, papillate and rugose.
Phenology: Flowering spring.
Habitat: Rounded hills in gypsum clay and sandy soils of Moenkopi Formation, Great Basin desert scrub
Elevation: 900-1600 m
Discussion
Of conservation concern.
Pediocactus sileri stems tend to develop a basal thatch of spines that anchor it to the fine, gypsum-rich soil. This species is endemic to a narrow strip along the Arizona-Utah border.
Selected References
None.
Lower Taxa
None.