2019 55¢ Cactus Flower (Echinocereus dasyacanthus)
Value: 55¢ 1-ounce First-class rate (Forever)
Issue Date: February 15, 2019
First Day City: Mesa, AZ
Type of Stamp: Definitive
Printed by: Banknote Corporation of America
Printing Method: Offset
Format: Double-sided booklet of 20
Quantity Printed: 400,000,000
Cacti have some of the most unusual common names of any plants. These can be chosen based on what the cactus looks like, where it grows, or who first discovered it. Since many cacti have similar features, they are constantly being reclassified. This means the Latin name changes, too. Keeping the common name helps distinguish the species no matter which genus it is moved to.
The Texas rainbow cactus's name says a lot about it. it can be found from Arizona to Mexico, but is most plentiful in Texas. The cactus's scientific name, Echinocereus dasyacanthus,comes from the Greek dasys and akantha, meaning "shaggy thorns." This is appropriate given the many overlapping spines found on most Texas rainbow cacti, giving them a fuzzy-looking exterior. These spines can vary in color and sometimes appear as bands, similar to a rainbow.
The Texas rainbow cactus is a common addition to indoor cactus collections. They grow slowly and stay relatively small throughout their lifetime. In addition to its colorful spines, this cactus produces bright yellow flowers in early spring, adding even more beauty to this already striking plant.