Echeveria runyonii

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Echeveria runyonii
Echeveria runyonii 'Topsy Turvy', Maui, Hawaii - 20070906-02.jpg
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[edit]

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[edit]

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[edit]

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[edit]

References[edit]

  1. ^ a b "RUNYONII Rose ex Walther, 1935.". International Crassulaceae Network. Retrieved 2012-07-01. 
  2. ^ a b c d e 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.