Difference between revisions of "Opuntia aurea"

E. M. Baxter

Cact. Succ. J. (Los Angeles) 5: 489, fig. s.n. (p. 489). 1933.

Endemic
Synonyms: Opuntia basilaris var. aurea (E. M. Baxter) W. T. Marshall Opuntia erinacea var. aurea (E. M. Baxter) S. L. Welsh
Treatment appears in FNA Volume 4. Mentioned on page 145.
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|name=Opuntia basilaris var. aurea
 
|name=Opuntia basilaris var. aurea
 
|authority=(E. M. Baxter) W. T. Marshall
 
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|rank=variety
 
}} {{Treatment/ID/Synonym
 
}} {{Treatment/ID/Synonym
 
|name=Opuntia erinacea var. aurea
 
|name=Opuntia erinacea var. aurea
 
|authority=(E. M. Baxter) S. L. Welsh
 
|authority=(E. M. Baxter) S. L. Welsh
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|rank=variety
 
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|hierarchy=Cactaceae;Cactaceae subfam. Opuntioideae;Opuntia;Opuntia aurea
 
|hierarchy=Cactaceae;Cactaceae subfam. Opuntioideae;Opuntia;Opuntia aurea
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name=Opuntia aurea
 
name=Opuntia aurea
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|publication title=Cact. Succ. J. (Los Angeles)
 
|publication title=Cact. Succ. J. (Los Angeles)
 
|publication year=1933
 
|publication year=1933
|special status=
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|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V4/V4_279.xml
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|subfamily=Cactaceae subfam. Opuntioideae
 
|subfamily=Cactaceae subfam. Opuntioideae
 
|genus=Opuntia
 
|genus=Opuntia

Latest revision as of 21:57, 5 November 2020

Shrubs, forming low clumps or with trailing branches, 10–30 cm. Stem segments not disarticulating, green to blue-green, flattened, elliptic to obovate, 6–15 × 5–12 cm, low tuberculate, papillate; areoles 7–11 per diagonal row across midstem segment, subcircular to elliptic, 3–5 × 2–4 mm; wool tan. Spines absent or only l spine in 1–few distal areoles, deflexed, yellow to gray, straight, terete, to 10 mm. Glochids in dense crescent at adaxial margin of areole and dense subapical tuft, yellow, to 6 mm. Flowers: inner tepals yellow throughout (magenta in introgressed plants), 25–30 mm; filaments white to yellow; anthers yellow; style white; stigma lobes green. Fruits tan to gray, 25–30 × 15–20 mm, dry, spineless; areoles 12–18. Seeds tan, subspheric to irregularly shaped, flattened, very large, 9–12 mm diam.; girdle thick, protruding 2.5–3.5 mm. 2n = 66.


Phenology: Flowering late spring (May–Jun).
Habitat: Pinyon-juniper woodlands, red sands
Elevation: 1500-1800 m

Discussion

Opuntia aurea forms hybrids with O. polyacantha var. erinacea and O. phaeacantha, and forms hybrid swarms with O. pinkavae (B. D. Parfitt 1991).

Selected References

None.

Lower Taxa

None.