Arrojadoa
Arrojadoa penicillata
Arrojadoa is a genus of flowering plants of the cactus family ( Cactaceae ). The botanical name of the genus honors the plant collector Miguel Arrojado Ribeiro Lisboa ( 1872-1932 ).
Description
The bushy, erect, semi-erect or creeping -growing species of the genus Arrojadoa little branch from the base. The green, slender cylindrical shoots are sometimes divided and reach for diameters from 0.5 to 5 centimeters a plant height up to 2 meters. At 7 to 17 ribs, the areoles fit tightly together. The small thorns are often bristly. At the end of each growing season, a terminal cephalium is formed, which is growing in the next growing season and forms a ring shaped tufts of white wool and reddish bristles.
The tubular flowers are red, pink, purple, violet or white and will open on the day. They are up to 4.5 centimeters long and often occur in clusters from the cephalium at the shoot tip. The flower cup and the flower tube are bald. The perianth hardly opens. The stamens and the style does not stand out.
The spherical to pear- shaped, smooth, bare fruits are purple, pink or red. You are berry-like, juicy and have a white flesh. They reach a diameter of up to 2 centimeters. The oval to pear- shaped seeds are black and warty. They are up to 1.5 mm long.
Systematics and distribution
The species of the genus Arrojadoa are widespread in eastern Brazil.
The first description of the genus was made in 1920 by Nathaniel Lord Britton and Joseph Nelson Rose. The type species is Cereus rhodanthus Gürke. Belong to the genus of the following types:
- Arrojadoa × albiflora natural hybrid between Arrojadoa Dinae and Arrojadoa rhodantha
- Arrojadoa Dinae Arrojadoa Dinae subsp. Dinae
- Arrojadoa Dinae subsp. eriocaulis