JUAREZENSIS  Walther, 1959

ORIGIN UNKNOWN. MOST PROBABLY LOST TO CULTIVATION.

Series Gibbiflorae

Type : T. MacDougall B-172. CAS 409864.

Distribution : Picked up in the Oaxaca market..Origin unknown,

First Description by Walther in Cactus and Succulent Journal US 31(2): 52. 1959 (of living plant cultivated at UCBG, 1958) :

Plant glabrous, caulescent with stem to 8 cm tall, usually simple.

Leaves to 20 or more, crowded in terminal rosettes, obovate-cuneate, acute and mucronate, thick and rigid, deeply concave above, beneath rounded and somewhat keeled, 5 cm long and 3 cm broad, greyish-green, somewhat glaucous.

Inflorescences 2, axillary, of 3 secund racemes, to 20 cm tall, peduncle erect or ascending, to 5 mm thick near base, vinaceous, lower bracts ascending, oblong-obovate, upcurved, concave above, rounded beneath, at the upcurved apex mucronate, to 25 mm long and 11 mm broad, greyish-green, above vinaceous, glaucous, racemes 10 to 12 cm long, ascending-spreading, with about 12 flowers each, upper bracts as the lower, but 15 mm long, brownish, pedicels slender, to 14 mm long, vinaceous.

Flowers : Sepals ascending to widely spreading at anthesis, subequal, longest 11 mm long, linear-oblanceolate, acute, convex on both surfaces, light greyish-green, corolla pentagonal, conoid-urceolate, to 12 mm long, 8 mm in basal diameter, scarlet, petals apiculate, with distinct basal nectar-cavity, light-orange-yellow inside, carpels 7 mm long, white below, yellow above, styles vinaceous, nectaries oblique, reniform, to 2 mm wide.

Flowering time June - August.

Note : 

1. In a letter to Reid Moran, Thomas MacDougall confirmed that he had picked up the plant in a market in Oaxaca, "said to have come from Ixtepeji", where - however - it had never been found, i.e. the plant Walther described as E. juarezensis has no origin in the wild and may well have been a garden hybrid. That means the name is rather misleading ! As the plant Walther had used for his description is no longer extant, the whole text is at most of historical interest. More details on p. 99-100 in Revision of Walther's monograph Echeveria, 1972.

2. Plants collected by Reid Moran at the purported type locality in the Sierra Juarez with rosettes of 15 - 35 cm in diameter (of which C.H. Uhl made chromosome counts) correspond to E. spec. Cumbre.

3. The photos published on crassulaceae.com on  represent E. spec. Cumbre.