NUYOOENSIS Reyes & Islas, 2015
Series Nudae
Distribution : Mexico (Oaxaca, north of Nuyoo, ca 2700 m).
Description :
Plant glabrous.
Stems erect, branching from the base, up to 1 m tall, decumbent with age.
Rosettes lax, 5 - 9 cm in diameter (when grown in full sun), 12 - 22 leaves, distributed between 5.5 - 10 cm of stem length.
Leaves oblanceolate-spatulate, mucronate, slightly pruinose, 4 - 12 x 3 - 5 cm, base narrowed, concave, margins purple.
Flowering stems 1 - 2 per branch, 31 - 62 cm tall, 15 - 25 bracts, some recurved or sometimes adpressed, oblanceolate, obtuse, mucronate, 2 - 5 x 1 - 2.7 cm, 1.3 - 1.6 cm thick, yellowish green, margins reddish.
Inflorescences thyrsiform, with 20 - 68 flowers, rarely three almost sessile flowers per branch, bracteoles lanceolate, reflexed to ascending, 12.4 - 19.7 mm long, pedicels 2.7 - 6 mm long.
Flowers : Sepals unequal, 4.3 - 11.6 x 1 - 2.2 mm, cuspidate, subulate, spreading or ascending, green to reddish-green, corolla cylindrical, pentagonal, to 12.7 mm long, to 7.5 mm wide close to the base, bright pink with yellowish hues, inside yellow, petals lanceolate, slightly united at base, imbricate, acute, 2.8 - 4 mm wide, filaments greenisch-yellow, anthers yellow.
Flowering time : November to January (in habitat).
The authors compare Echeveria nuyooensis with Central American species such as E. australis, E. pittieri and E. tencho. And they say that without flowers it could be mistaken for E. procera.