Weingartia pucarensis HJ1201
|Diers & Jucker|
Weingartia pucarensis is a species of plant in the genus Weingartia from the cactus family(Cactaceae). The species name refers to the mountain range where the species was discovered, the Cerro Pucara.
Weingartia pucarensis grows individually and in culture only very rarely sprouting slightly with more or less flat to hemispherical bodies. These reach a diameter of up to 12 centimeters and heights of up to 6 centimeters. The branched roots run flat through the ground. The mostly shiny epidermis of the plants is dark brownish red to dark purple, rarely dark greenish in color. The 13 to 18 ribs, some of which are indistinctly recognizable, are broken up into broad and long, downwardly drawn out humps. 2 to 3 bumps are formed per rib. They are up to 17 millimeters wide, up to 35 millimeters long and 5 to 8 millimeters high in the middle of the body. The young areoles are first circular, then later elongated oval. They sit on the tip of the cusp or slightly shifted vertically and are 5 to 7 millimeters long and 2 to 4 millimeters wide. The upper areoles, on which the flowers appear, are covered with short, yellowish felt, later they become bare. They are never thick or long. The 4 to 6 central spines cannot always be clearly distinguished from the radial spines and are 10 to 30 millimeters long. They are in a crosswise arrangement. A thorn , often the longest, is bent forward or obliquely downward. Another spike is bent upwards at an angle, two others are oriented upwards to the left and right and sometimes one or two laterally and more or less upwards at an angle. The 6 to 11 radial spines are sloping from the plant on all sides and are 5 to 25 millimeters long. The thorns are needle-like, straight or slightly curved and grayish-white to slightly yellowish and reddish-brownish in color towards the tip.
The deep yellow and very rarely slightly orange colored flowers usually appear near the apex, sometimes in the upper part of the plant body and rarely in the lower part. They stand individually, rarely in pairs and each in the upper areole section. They are 20 to 28 millimeters long and 30 to 35 millimeters wide. The more or less spherical pericarpel is 2.0 to 4.5 millimeters high and 3 to 4 millimeters wide. It is reddish carmine or rarely green in color and almost completely covered with 4 to 6 dark carmine and rarely light green heart-shaped scales that are bald in their armpits. The scales are 0.6 to 2.0 millimeters long and 0.8 to 3.0 millimeters wide. The funnel-shaped to slightly bell-shaped receptaculum is light carmine and rarely pure yellow in color. It reaches a length of 8 to 15 millimeters and a width of 4.0 to 4.5 millimeters at the bottom and 11 to 14 millimeters at the top. It is covered with broadly heart-shaped to broadly linear scales. The throat is dark carmine or rarely greenish yellow. The 15 to 19 slightly lanceolate to long oval and pointed petals stand in two circles and are intensely yellow in color and reddish at the base. The outer ones are 10 to 13 millimeters long and 4 to 5 millimeters wide; the inner ones are 10 to 12 millimeters long and 2.5 to 5 millimeters wide. The 160 to 230 stamens are in 6 spiral circles. The filaments are carmine at the bottom and light reddish to dark yellowish towards the anther, rarely all pure yellow, colored. The anthers are yellow and 1.0 to 1.2 millimeters long and 0.5 millimeters wide. The greenish style becomes yellowish towards the top and is 10 to 11 millimeters long. The whitish yellowish scar is divided into 4 to 7 spread out, slightly pointed branches.
The spherical to ellipsoidal fruit is 6.0 to 8.5 millimeters long and 5 to 7 millimeters wide. It remains on the plant for a long time and bears a 11 to 18 millimeter long dried flower remnant. It is covered with initially reddish and rarely greenish scales, which later dry up brownish. It contains 110 to 200 seeds. The oval to bean-shaped seeds are black and rarely black-brown. They are 1.1 millimeters long and 0.9 millimeters wide.
Distribution and systematics
Weingartia pucarensis is widespread in the Bolivian department of Potosí in the Linares province on Cerro Pucara at altitudes of 2150 to 2500 meters. They grow in stony soils between red sandstone rocks and are exposed to the sun for 3 to 6 hours a day or in humus soils in the shade of bushes. The accompanying flora includes species from the following genera: Blossfeldia , Cleistocactus , Parodia , Echinopsis and Gymnocalycium Pflanzii and Lobivia krahn-juckeri .
- Lothar Diers, Hansjörg Jucker: Weingartia pucarensis (Cactaceae) - a new species from Bolivia . In: Cacti and other succulents . Volume 62, Number 5, 2011, pp. 129-131.