Villadia

NELSONII Rose, 1903

Synonyms :

 

Cotyledon nelsonii  (Rose) Fedde (1904) / Altamiranoa nelsonii  (Rose) E.Walther (1938)

 

Distribution : Mexico (Guerrero, Oaxaca); 1850 - 2550 m.

 

 

Description (according to IHSP, 2003) :

 

Shrublets, densely papillose except inner flower parts.

 

Roots sometimes thickened.

 

Stems ± strictly erect, unbranched or few-branched in the lower ½.

 

Flowering stems dying back in the upper ½, 10 - 60 cm, bark not peeling.

 

Leaves spreading, spatulate, rounded, 15 - 40 (-50) x 5 - 15 mm, only present in the uppermost 2 - 5 cm of sterile stems, mostly deciduous after flowering.

 

Inflorescences lax spikes or thyrses, 3 - 18 cm, with 6 - 20 short scorpioid branches with 1 - 3 fIowers each, pedicels almost absent.

 

Flowers : Sepals ascending, oblong, ± acute, spurred, 2.5 - 3 x 1.25 - 1.5mm, corolla pentagonal, basally campanulate, petals dorsally keeled, 4 - 6 mm, white, keel greenish,tube 1 - 1.5 mm, lobes spreading, triangular, acute, dorsally papillose (except the margins), 3 - 4.5 x 1.5 - 2 mm.

 

Cytology : n = 20




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