luddhus wrote:This statement on the Gymnocalycium mihanovichii page: "This is the plant that is seen all over the world in multi coloured forms grafted onto Hylocereus", is it really correct? All flowers I have seen on these have been pink.
thanks for your input, there seems to be some confusion in this section of Gymnocalycium, http://www.cactus-art.biz describes it this way.
Shmuel wrote:luddhus, I think the statement of "multi colored forms" refers to the gamma-ray zapped bright red or yellow skinned grafts, not the flowers.
I know, but the flowers are described as "greeny brown".
Gymnocalycium friedrichii and G. stenopleurum are sometimes combined with G. mihanovichii, and sometimes kept as separate species. The main distinctions of G. friedrichii and G. stenopleurum from G. mihanovichii are:
G. friedrichii has prevalently purplish pink, wide open flowers and well-pronounced polymorphism of spines. Besides it has tall slender ribs and roller-shaped prominent thickening around areoles.
G. mihanovichii has wider, lower ribs, in juvenile plants divided into separate chins, in maturity every rib have flat surface and a pleat above each areole. But the essential thing is its pale or brownish-yellow, not fully opening flower.
G.stenopleurum Has white, fully opening flowers.
But many intermediate forms are also known and nowadays it is suggested that all should be combined into only one variable species. http://www.cactus-art.biz/schede/GYMNOCALYCIUM/Gymnocalycium_mihanovichii/Gymnocalycium_mihanovichii/Gymnocalycium_mihanovichii.htmcactiguide lists it this way
Taxonomy for Gymnocalycium mihanovichii, its infra species, and synonyms.
Name - Author - Publication - Year
Britton & Rose
Published: Cactaceae (Britton & Rose) 05:33:00 AM 1922 [12 Oct 1922] [ IPNI ]
Gymnocalycium mihanovichii var. albiflorum
Published: Friciana 111/17: 5 1963 [ IPNI ]
Gymnocalycium mihanovichii var. filadelfiense
Published: Kakteenlexikon 170 1966 [ IPNI ]
Gymnocalycium mihanovichii var. friedrichii
Published: Repert. Spec. Nov. Regni Veg. Sonderbeih. C Lief. 29, tab. 113 1936 [ IPNI ]
Gymnocalycium mihanovichii f. nigrum
Published: Cactaceae [Itô] 409, without type 1981 [ IPNI ]
Published: Kakteen Südamerika 1: 265 (1979) 1979 [ IPNI ]http://www.cactiguide.com/ipni_name_data/?genus=Gymnocalycium&species=mihanovichii&unique_key=2089maybe I should do a re-write including the var friedrichii and var stenopleurum
I have an image of var friedrichii (pink flower) does anyone have an image of var stenopleurum (white flower) that i could use