Download The subgenus Tephrocactus;: A historical survey with notes by Gilbert & ILIFF, James LEIGHTON-BOYCE PDF

By Gilbert & ILIFF, James LEIGHTON-BOYCE

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Extra info for The subgenus Tephrocactus;: A historical survey with notes on cultivation

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Diademata. g. , 1 : 216-17, 279), is clearly unacceptable. It is evident from the habit, tiny terete sublanceolate (more or less pointed) stemsegments and straight, centrally placed spines of Haworth’s plant that this cannot have belonged to the O. diademata group; while the early records give repeated testimony that O. glomerata Haw. was at that time recognised as having a close affinity with O. andicola where these same characters would well correspond. The inclusive synonymy of “The Cactaceae” has very understandably been widely ignored so far as O.

365, 372). : 145) observes that the stemsegments of O. glomerata are hardly 2½ cm long (vix pollicares) and gives Mendoza, a much more probable locality, as the source of his material. Haworth’s reference to Brazil is almost certainly an error, though this may have been the country from which the species reached Europe. O. glomerata is also recorded from Chile (Fl. , 3 : 28), while O. , regarded as synonymous by Backeberg, was based upon material collected several hundred miles to the north of Mendoza in the high Andes of Argentina: Prov.

Ramuli sublanceolato-teretes carne farctim crassi, subvirides, vix semunciam lati. Areolae ordinariae setis brevissimis densissimis uniformibus, unaque spina plus minus centrali cornea, corneoque colore biunciali, vix flaccida, neque rigida, sed in arcum flexibili. “With branches packed together in a clump; the central spines single, straight, tapering to a fine point, flat on both sides, very long. It is found in Brazil, and thrives in the celebrated collection of the London Horticultural Society, as yet without flowering.

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