SKINNERI  Walther, 1972  (engl./ fr.)

Series Nudae

Type : MacDougall B-204, collected at 7000 feet altitude, Santo Tomas Quieri, Cerro Madreña, Oaxaca. CAS 413180.

Etymology : Named for Don B. Skinner.

Distribution : Mexico (Oaxaca : Cerro Madreña).

Description of the type B-204 by Reid Moran in his Notes :

Stem 23 cm tall, 6 - 10 mm thick, somewhat branching, green becoming reddish brown, smooth and terete, the leaf base sites inconspicuous, oval, ca 7 - 8 mm wide and 3 - 5 mm high, the attachment scar lenticular, ca 1 - 2 mm wide.

Rosettes 3.5 - 4.5 cm wide, of 15 - 20 slightly separated leaves.

Leaves cuneate-spatulate, rounded, submucronate but with mucro downturned and inconspicuous, slightly papillose, 18 - 22 x 12 - 15 x 4 - 5 mm, slightly glaucous, ± purplish towards apex, flattish and assymetrically low-keeled dorsally, convex ventrally, the margins rounded with a faint obtuse line near the dorsal surface.

Floral stem arising 3.5 cm below stem apex and 2.5 cm below rosette, 23 cm long, 5 mm thick, now leafless, with 25 leaf scars equally distributed from near base, brownish below, reddish above.

Raceme 3 cm long, of 5 flowers, pedicels spreading, 5 - 6 mm long, ca 2 mm thick, jointed at the base, slightly thicker above.

Calyx disk 4 - 5 mm wide, the segments widespreading, elliptic, broadly acute, apiculate, nearly equal, 6 - 8 mm long, 3 - 4 mm wide, 2 - 2.5 mm thick, flattish dorsally, rounded ventrally, the margins subrounded, the apex slightly papillose, corolla 13 - 14 mm long, 9 mm wide at the base, dark red, yellow within and on covered edges, the sides shallowly channeled, petals connate ca 1 mm, elliptic-oblong, broadly acute, apiculate, 5.5 mm wide, keeled, filaments ca 8 - 9 mm long, gynoecium 10 mm high, 5 mm thick, the styles dark red, ca 2 mm long.

Cytology : n = ± 40

Note :

The description by Walther in his posthumous book Echeveria (1972) is unusable because it is made from a plant without known origin cultivated in the garden of Victor Reiter.

See also : An epitype for Echeveria skinneri E.Walther.

Plants in habitat / Plantes d'habitat :