Echeveria runyonii

Echeveria runyonii
E. runyonii 'Topsy Turvy'
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Saxifragales
Family: Crassulaceae
Genus: Echeveria
Series: Pruinosae[1]
Species: E. runyonii
Binomial name
Echeveria runyonii
Rose ex E.Walther.[2]

Echeveria runyonii is a species of flowering plant in the sedum family, Crassulaceae,[2] that is native to the state of Tamaulipas in Mexico.[3] Several cultivars have been described and cultivated.

Taxonomy

Joseph Nelson Rose described Echeveria runyonii in 1935,[2] named in honour of Texas amateur botanist Robert Runyon.[4] Runyon had collected the type specimen from a Matamoros, Tamaulipas garden[5] in 1922.[6][7] Wild populations were unknown until 1990, when one was discovered by the staff of Yucca Do Nursery.[8]

The cytology of Echeveria species is helpful in identification, as many species can be very variable in appearance; E. runyoni has 14 chromosomes.[2]

Description

Inflorescence

Echeveria runyonii forms a rosette 8–10 cm (3.1–3.9 in) in diameter. Leaves are spatulate-cuneate to oblong-spatulate, truncate to acuminate, and mucronate. They are a glaucous pinkish-white in color and measure 6–8 by 2.5–4 cm (2.4–3.1 by 1.0–1.6 in). The single stem reaches 10 cm (3.9 in) in length or more and a diameter of roughly 1 cm (0.39 in). Inflorescences are 15–20 cm (5.9–7.9 in) tall and have 2 – 3 cincinni, conspicuous bracts, and pedicels approximately 4 mm long. The red flowers have ascending-spreading sepals to 11 mm and pentagonal corollas measuring 19 – 20 × 10 mm.[2]

Echeveria peacockii has similar-coloured glaucous leaves, but its leaves are wedge-shaped with mucronulate (pointed) tips.[9]

Cultivation

Several named cultivars exist, including 'Texas Rose', 'Dr. Butterfield', 'Lucita', 'Tom Allen', and 'Topsy Turvy'. The last is a mutant form, which originated in California, in which the leaves are positioned upside-down.[1]

Hybrids

References

Wikimedia Commons has media related to Echeveria runyonii.
Wikispecies has information related to: Echeveria runyonii
  1. 1 2 "RUNYONII Rose ex Walther, 1935.". International Crassulaceae Network. Retrieved 2012-07-01.
  2. 1 2 3 4 5 Kimnach, Myron (2003). Urs Eggli, ed. Illustrated Handbook of Succulent Plants. Volume 6: Crassulaceae. Birkhäuser. pp. 103, 122. ISBN 9783540419655.
  3. Kimnach, Myron (January 2001). "Three varieties of Echeveria cuspidata". Cactus and Succulent Journal. 77 (1): 28–33.
  4. Eggli, Urs; Newton, Leonard E. (2004). Etymological Dictionary of Succulent Plant Names. Birkhäuser. p. 207. ISBN 3540004890.
  5. Scheick, William (July–August 2012). "Echeverian Beauty among the Rocks". Texas Gardener.
  6. "Isotype of Echeveria runyonii Rose, J.N. 1935 [family CRASSULACEAE]". JSTOR Plant Science. JSTOR. 2011-05-25. Retrieved 2012-07-01.
  7. "Echeveria runyonii Rose ex E. Walther". Collections Search Center. Smithonian Institute. Retrieved 2012-07-01.
  8. Finkel, Marty (October 2010). "Plant of the month Echeveria 'Topsy Turvy'" (PDF). The Garden Path.
  9. Cactus and Succulent Society of America (1998). Haseltonia: yearbook of the Cactus and Succulent Society of America, Issues 6-10. p. 81.
  10. "Domingo". International Crassulaceae Network. Retrieved 2012-07-01.
  11. "Green Star". International Crassulaceae Network. Retrieved 2012-07-01.
  12. "Swan Lake". International Crassulaceae Network. Retrieved 2012-07-01.
  13. "Glade Surprise". International Crassulaceae Network. Retrieved 2012-07-01.
  14. "Dagda". International Crassulaceae Network. Retrieved 2012-07-01.
  15. "Exotic". International Crassulaceae Network. Retrieved 2012-07-01.
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