Xerophyte

Description

Notocactus horstiiSN|20345]]SN|20345]] fa muglianus is a form of Notocactus horstiiSN|20345]]SN|20345]], but not sufficiently differentiated and considered merely a local variant of the latter (if not the same). The key difference by which the two were separated, namely the presence of deeper rib with areoles more woolly and larger to 10 mm in diameter, flowers up to 5 cm wide with petals always tapering, 3-4 mm wide, orange red to salmon red, and stigma lobes coloured like the petals, seems entirely spurious. The fa mugelianus is not accepted by many botanists that treat it as synonym, but it still has a value for a collector because they identify plants with particular characters.