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HALBINGERI   Walther, 1958

Series Urbiniae

Type : Halbinger s.n., said to have come from near Paila, Hidalgo, Mexico. CAS 289374.


Etymology : Named for C. Halbinger, Mexico City.


Distribution : Mexico (Hidalgo: S of Actopán, El Arenal, Cerro de las Canteras; Queretaro, Puente Tepozan; Veracruz).



First Description by Walther in Cactus and Succulent Journal US 30: 89. 1958 (from living plant grown in Golden Gate Park, S.F., received from C. Halbinger of Mexico City) :


Plants rather small.


Rosettes stemless, belatedly caespitose.


Leaves about 30, crowded, thick-turgid, obovate, to 25 mm long and 13 mm broad, subtriquetrous in upper half, at apex obtuse but minutely aristate-apiculate, greyish-green, somewhat glaucous.


Inflorescence a simple raceme, scape to 12 cm tall, slender, erect or weakly spreading, bracts linear-lanceolate, to 10 mm long, ascending, triquetrous, sharply keeled, shortly acuminate, pedicels 6 mm long, somewhat turbinate below calyx.


Flowers 6 - 9, sepals unequal, longest 6 mm long, rotately spreading at anthesis, corolla about 12 mm long if one discounts the out-curved petal-tips, more or less urceolate-campanulate, orange, petals conspicuously subulate-apiculate at apex, with distinct basal hollow within, nectaries 0.7 mm long, narrowly elliptic, very oblique.


Flowering time : July.


Cytology : n = 62


Distributed by ISI n° 168 (1959) : Text is not correct : The plant offered was of unknown origin.


Link to a French description.

Note :

The plants commonly encountered with this name do not correspond well to the original description. They are far from being stemless and they are offsetting right away and not only belatedly. Whether they can be regarded as E. halbingeri all the same is unclear.

Photo Jacquie Koutsoudis

Photo Emmanuelle Aubé

Photo Margrit Bischofberger

Photos Stefan Neuwirth

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