Thelocactus conothelos ssp. flavus HK 362

(=Th. panarottoanus) stem single or clustering, forming small clumps up to 40 cm across, globose, single heads 5-12 cm wide. Ribs indistinct with conical tubercles. Central spines 4, 15-80 mm long, ochre to greyish, straight or slightly curved, acicular. Radial spines 3-5, 7-35 mm long, ochre to greyish, straight, acicular. Flowers 30-45 mm wide, yellow. (20 st/seeds/samen)