Gymnos from A to Z

Gymnocalycium berchtii Neuhuber

The type habitat near Los Chañares was the only known population of G. Berchtii for many years. During my trip in 2005, we were able to find another habitat further to the south-east of it and during the last couple of years two more populations were found. G. berchtii is a universally acknowledged and very distinctive species.


Based on the first description by Neuhuber in Gymnocalycium 10 (3) 1997:
shapesolytary, flat or disk shaped
height / diameterup to 20 mm / 40-60 mm
epidermisdull, black-grey or black-brown, white frosted, looks violet-grey when heavily exposed to uv-rays
ribflat (7)-9, nearly straight and widens to the base, then 17-20 mm in diameter
rootstake root
areole shapeoval
areole distance9-12 mm
spinestraight, rare slightly curved, thin, 7-10 mm in length, mostly laying close at the body, dark-brown to black, in direction of the top reddish brown or lighter, scarcely greyish
centrals spinenone


shapeshort club-shaped
fruit length / diameter21-42 mm / 9,5-20 mm
fruit colorblue when ripe, seldom grey-green
peculiaritiesvertical ripping
diameter1,2-1,4 mm
seed groupGymnocalycium


flower shapefunnel-shaped
length/diameter53-79 mm / 43-60 mm
flower colorsoft-rose to soiled white, rose-brown gullet
exterior petalslanceolate, white with soft rose middle streak, light-green to light-rose center and sometimes a grey-green top at the outside, soft-rose base, up to 38 mm in length, at the widest part 9 mm in diameter, at the base 4mm in diameter I
interior petalslanceolate to trapezoid-like, sometimes a bit fringed, mother-of-pearl-like color, light-green at the bottom, fine rose middle streak, rose base, up to 25 mm in length, widest part is 7,5 mm in diameter, at the base 2mm in diameter
filamentslight-yellow, 8-11 mm in length, 1-2 basic rows, short, laying close at the style
stamensyellow, 1,5 mm long, 0,6 mm wide
style length / width12,9 mm / ca. 2,0 mm
style colorlight-green at the base and changing to white in direction of stigma
stigmayellow, 5 mm in length, 7-9 stigma branches, middle classed
Typus: Argentina, Provincia San Luis, Los Chañares, 690 m s.m., 16 Decembro.1989, leg. G. Neuhuber 89–158 (Holotypus: WU).