Appearance
"Echeveria runyonii" forms a rosette 8–10 cm 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. The single stem reaches 10 cm in length or more and a diameter of roughly 1 cm. Inflorescences are 15–20 cm 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 peacockii" has similar-coloured glaucous leaves, but its leaves are wedge-shaped with mucronulate tips.
Naming
Joseph Nelson Rose described "Echeveria runyonii" in 1935, named in honour of Texas amateur botanist Robert Runyon. Runyon had collected the type specimen from a Matamoros, Tamaulipas garden in 1922. Wild populations were unknown until 1990, when one was discovered by the staff of Yucca Do Nursery.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".
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