JURGENSENII ssp. JURGENSENII

Synonyms :

 Altamiranoa elongata  Rose (1903) / Cotyledon elongata  (Rose) Fedde (1904) / Villadia elongata  (Rose) R. T. Clausen (1940)

Sedum brandtianum  von Poellnitz (1933)

Altamiranoa necaxana  Fröderström (1936) / Villadia necaxana  (Fröderström) H. Jacobsen (1958)

Distribution : Mexico (Hidalgo, Querétaro, Tamaulipas ?, San Luis Potosí, Guanajuato, Oaxaca, Puebla, Veracruz); cliffs and rocky slopes, 1100 – 2900 m.

Description (by 't Hart & Bleij in IHSP, 2003) :

Weak hispidulous perennial small subshrubs.

Roots not thickened or tuberous.

Stems branching near the base and above, perennial base woody, lower 1/3 at flowering time with bristly new shoots 0.5 – 3 cm long, with ± 25 – 50 imbricate leaves, flowering branches erect to trailing and rooting, 10 – 50 (-70) cm, glabrous to sparsely or closely puberulent with non-glandular hairs.

Leaves in 3:5 spirals, mostly spreading, triangular-ovate to triangular-lanceolate, acute, 4 – 8 (-15) x 2 – 3 mm, variously hispidulous, lower leaves densely hispidulous.

Inflorescences with 2 – 5 cincinni and more, each 1 – 3 (-8) cm long with 2 – 12 (-20) flowers.

Flowers : Sepals erect, ± appressed to the corolla, 2.5 – 5 mm, corolla in bud 4 – 6 mm, campanulate to rotate at anthesis, 5 – 8 mm in diameter, petals elliptic, broadly acute, white, 3 – 4.5 x 1.6 – 2 mm, tube 1 – 1.5 mm, anthers red.

Cytology : n = 23

Flowering time : September – December