Echeveria runyonii explained

Echeveria runyonii is a species of flowering plant in the family Crassulaceae, that is native to the state of Tamaulipas in Mexico.[1] Several cultivars have been described and cultivated.

Taxonomy and etymology

Joseph Nelson Rose described Echeveria runyonii in 1935, named in honour of Texas amateur botanist Robert Runyon.[2] Runyon had collected the type specimen from a Matamoros, Tamaulipas garden[3] in 1922.[4] [5] Wild populations were unknown until 1990, when one was discovered by the staff of Yucca Do Nursery.[6]

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

Echeveria is named for Atanasio Echeverría y Godoy, a botanical illustrator who contributed to Flora Mexicana.[7]

Description

Echeveria runyonii forms a rosette 8– 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–. The single stem reaches 10cm (00inches) in length or more and a diameter of roughly 1cm (00inches). Inflorescences are 15– 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.

Echeveria desmetiana has similar-coloured glaucous leaves, but its leaves are wedge-shaped with mucronulate (pointed) tips.[8]

Cultivars

Several named cultivars exist, including 'Texas Rose', 'Dr. Butterfield', 'Lucita', 'Tom Allen', and 'Topsy Turvy'. The last is a mutant form originated in California, with leaves positioned upside-down.[9]

Hybrids

Notes and References

  1. Three varieties of Echeveria cuspidata . Myron . Kimnach . Cactus and Succulent Journal . 77 . 1 . January 2001 . 28–33. 10.2985/0007-9367(2005)77[28:TVOEC]2.0.CO;2 .
  2. Book: Eggli, Urs . Newton, Leonard E. . Etymological Dictionary of Succulent Plant Names . Birkhäuser. 2004. 207. 3540004890.
  3. William . Scheick . Echeverian Beauty among the Rocks . Texas Gardener . July–August 2012 .
  4. Web site: Isotype of Echeveria runyonii Rose, J.N. 1935 [family CRASSULACEAE] . JSTOR Global Plants. JSTOR . 2011-05-25 .
  5. Web site: Echeveria runyonii Rose ex E. Walther . Collections Search Center . Smithsonian Institution . 2012-07-01.
  6. Plant of the month Echeveria 'Topsy Turvy' . Marty . Finkel . The Garden Path . October 2010 . 2012-07-02 . https://web.archive.org/web/20160304033234/http://vance.ces.ncsu.edu/files/library/91/October%202010.pdf . 2016-03-04 . dead .
  7. Gledhill, David (2008). "The Names of Plants". Cambridge University Press. (hardback), (paperback). p. 149
  8. Book: Cactus and Succulent Society of America. Haseltonia: yearbook of the Cactus and Succulent Society of America, Issues 6-10. 1998. 81.
  9. Web site: RUNYONII Rose ex Walther, 1935. . https://archive.today/20130115171522/http://www.crassulaceae.ch/index.php?TPL=113&x270_id=1898&x270_listsearch=1 . dead . 2013-01-15 . International Crassulaceae Network . 2012-07-01 .
  10. Web site: Domingo . International Crassulaceae Network . 2012-07-01 . https://archive.today/20130115163012/http://www.crassulaceae.ch/index.php?TPL=113&x270_id=499&x270_listsearch=1 . 2013-01-15 . dead .
  11. Web site: Green Star . International Crassulaceae Network . 2012-07-01 . https://archive.today/20130115215426/http://www.crassulaceae.ch/index.php?TPL=113&x270_id=607&x270_listsearch=1 . 2013-01-15 . dead .
  12. Web site: Swan Lake . International Crassulaceae Network . 2012-07-01 . https://archive.today/20130116034313/http://www.crassulaceae.ch/index.php?TPL=113&x270_id=2520&x270_listsearch=1 . 2013-01-16 . dead .
  13. Web site: Glade Surprise . International Crassulaceae Network . 2012-07-01 . https://archive.today/20130115160941/http://www.crassulaceae.ch/index.php?TPL=113&x270_id=2524&x270_listsearch=1 . 2013-01-15 . dead .
  14. Web site: Dagda . International Crassulaceae Network . 2012-07-01 . https://archive.today/20130115181535/http://www.crassulaceae.ch/index.php?TPL=113&x270_id=471&x270_listsearch=1 . 2013-01-15 . dead .
  15. Web site: Exotic . International Crassulaceae Network . 2012-07-01 . https://archive.today/20130115185556/http://www.crassulaceae.ch/index.php?TPL=113&x270_id=2391&x270_listsearch=1 . 2013-01-15 . dead .

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