MACDOUGALLII  Walther, 1958

Synonym : Echeveria sedoides  E. Walther (1958)

Series Nudae

Type : According to the respective herbarium sheet CAS 268566, the type is a plant from Victor Reiter, received from MacDougall 1938, but it is not T. MacDougall B.15.

Etymology : Named for its discoverer, Thomas MacDougall.

Distribution: Mexico (Oaxaca).

Description by Reid Moran of a plant from habitat : 

Caudex erect, 11 cm tall, 8 mm thick, somewhat branching, reddish.

Rosette 3 cm wide, of ca 15 leaves, crowded.

Leaves elliptic-oblanceolate, acute, to 15 x 9 x 4 mm.

Floral stem 9 cm tall, 3.5 mm thick, with ca 15 leaf scars, raceme 3-flowered, pedicels 5 mm long x 1.5 mm. 

Flowers : Calyx disk 3 - 4 mm wide, the segments wide-spreading, nearly equal, elliptic, acute, 6 - 9 x 2 - 3 x 1.5 mm, corolla 11 - 12 mm long, 8 mm wide at the base, 4 mm wide at the apex, red, with yellow on covered edges.

Cytology : n = 19, 34, 40, 42, 50

Note :

1. E. Walther's description (Echeveria, 302 - 304, 1972) is of no use because made from a plant of unknown origin.

2. Pilbeam, The genus Echeveria, p. 166, fig. 209, 2008, most certainly does not show E. macdougallii, to prove the contrary the flowers of this plant would be necessary.