Austrocactus, Britton & Rose

Walter, Helmut E. & Guerrero, Pablo C., 2022, Towards a unified taxonomic catalogue for the Chilean cacti: assembling molecular systematics and classical taxonomy, Phytotaxa 550 (2), pp. 79-98 : 88

Austrocactus :

—The Austrocactus species from around the town of Chile Chico was shown to be A. coxii (K.Schum.) Backeb. (see Walter 2019) and not A. patagonicus Hosseus according to Rodríguez et al. (2018) and Hunt et al. (2013, 2016). A. coxii can easily be distinguished from A. patagonicus (= A. bertinii Britton & Rose ) by large multi-headed cushions (vs. simple, rarely few-headed in A. patagonicus ), branches 10–15 cm long (vs. 50–60 cm) and 5 cm thick (vs. to 15 cm), all spines straight (vs. hooked), centrals 2.0– 2.5 cm (vs. 2–4 cm), flowers yellow to orange (vs. pinkish to white).