Echeveria
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WALPOLEANA  Rose, 1905   (engl./ fr.)

Synonym : Echeveria tamaulipana  Martinez-Ávalos et al. (2009)

Series Angulatae

Type : Palmer s.n., collected near Las Canoas, San Lluis Potosí, November 1902. Rose 506. US 399856.

Etymology : Named for the botanical artist Frederick A. Walpole.


Distribution  Mexico (San Luis Potosí, Nuevo León, Coahuila, Hidalgo, Tamaulipas).

 

First Description by Rose in Contributions from the United States National Herbarium 8: 295. 1905 :

 

Acaulescent or becoming in age shortly caulescent.


Leaves forming a dense rosette, at first pale green with reddish margins but becoming deeply tinged with red throughout, thickish, rounded on the back, boat-shaped above, sharply acute, 6 to 8 cm long, 2 to 2.5 cm broad, glabrous.

 

Inflorescences : Flowering stems 30 – 40 cm long, its leaves thickish, acute, inflorescence two-branched, each branch a secund raceme of 8 to 10 flowers,  pedicels very short.  


Flowers : Sepals spreading, ovate, acute, green, corolla about 14 mm long, deeply orange-coloured, the lobes erect, very thick, triangular in cross section, acute, stamens about half the length of the corolla lobes and attached near the top of the corolla tube, carpels erect.


Cytology : n = 13

Distributed by ISI n° 268 (1959) and ISI n° 91-43 (1991).

 

Note :

1. Instead of consulting the original description by Rose, Kimnach based his summary in the Illustrated Handbook of Succulent Plants, 2003, on Walther’s description of E. walpoleana  (Echeveria, p. 252,1972) – ignoring the annihilating criticism published by Charles Uhl in Haseltonia 6, 1998 :

Echeveria walpoleana did not fare well in Walther’s (1972) monograph. He apparently misidentified some collections of this species, including a probable topotype, as E. schaffneri (n = 12), and this led to confusion in his characterization and in his keys. Localities for E. walpoleana that he cited in Coahuila and Guanajuato much more likely apply to E. strictiflora (n = 12) and E. bifida (n = 12). And, judging from its broader leaves and its interior locality, at least one of the plants that he illustrated as E. walpoleana (Fig. 134) is probably E. cuspidata.”

2. The plant from the vicinity of Ciudad Victoria, Tamaulipas, described as E. tamaulipana, is by no means a "species new to science" as the authors  claim - it has been distributed by ISI already in 1991 as E. walpoleana. That means E. tamaulipana is a superfluous renaming of E. walpoleana, the name is to be listed in the synonymy of the latter.

Link to the French translation.

 


In habitat :






In cultivation :





Photos Gerhard Köhres






Photos Christophe Camassel




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