Anthurium carlablackiae is considered one of the most well-known and sought-after types among Anthuriums. It is especially valued for its striking contrast between the dark leaf surface and its prominent white veins, which can appear either broader or finer depending on the form. The species shows considerable variation, and well-known collectors and breeders such as Jay Vannini, Rory Antolak, Scott Cohen, and Paul Marcellini have each tracked their own selected forms through numbered lines. The species was originally discovered by Carla Black near Puerto Obaldía, Panama, in 2009 and was later named in her honor.
The plant is characterized by short, ribbed red petioles that may darken over time, as well as red cataphylls. Its leaves are heart-shaped, with emerging foliage that can appear red to reddish green before hardening off into a deep blue-green, sometimes almost black, tone. Cooler temperatures and lower light levels can intensify this dark coloration. The leaf undersides are pale with red primary lateral veins, while the upper surface features white to slightly greenish veins. The sinus is narrow, V-shaped, nearly closed, and can occasionally show a slight red-purple tint.
The A2 × RA7 combination comes from two clones that Rory Antolak passed on to Samuel A. While RA7 is now held by several collectors, A2 remains exclusive to Samuel’s collection and, as of 2026, has neither been sold nor selfed. This makes the cross the only available form of A2 genetics currently on the market. Its young leaves emerge in dark pink to brown tones before maturing into very dark green. The veins are relatively fine, similar to those of RA7. The inflorescence shows the characteristic traits of carlablackiae, with a white spathe and softly pink-tinted margins.