Discreta Collectanea Linnaeana

Oreocereus celsianus

Oreocereus is a genus of white-haired columnar cacti from South America, and the largest species is O, celsianus, which can grow to a height of about 10 feet (3 m). The coral-red or pinkish-red flowers are tubular, adapted to pollination by hummingbirds. This is a very adaptable species that can take freezing temperatures in winter (if not too sustained), as well as desert heat and cool coastal conditions. Native to the Andes in Argentina and Bolivia.

Haworthiopsis coarctata var. adelaidensis

The plants in the genus Haworthiopsis were all formerly in Haworthia, and they are often listed as such in books. The two genera have similar tubular flowers with curled-back tips, with stripes running down the middle of the tepals / petals. However. the species of Haworthiopsis have firmer leaves, often with white warts or ridges. This feature is very evident in H. coarctata, from South Africa's Eastern Cape Province. Because these charming and easy-to-grow plants are very popular with collectors, every little variant has been given a name; the variety adelaidensis may not be different enough to really deserve a separate name, but it has been given one anyhow, referencing the town of Adelaide, South Africa.