Uebelmannia buiningii Donald 1968

Plants short cylindrical, greenish to reddish brown with a rough surface from wax, to 8 cm (3.1 in) in diameter. Ribs 18, straight, 15 mm (0.6 in) apart, divided into downward-

pointing tubercles about 5 mm apart. Areoles with sparse wool. Spines reddish brown, becoming white with age. Central spines 4, forming a cross. Radial spines 2-4, shorter than the centrals, straight, to 5 mm long. Flowers yellow, to 2.7 cm (1.1 in) long and 2 cm (0.8 in) in diameter. Fruits ovoid, yellow, to 4 mm in diameter. Distribution: quartz in the Serra Negra, Minas Gerais, Brazil. Uebelmannia buiningii is listed in Appendix I of cites.

Uebelmannia gummifera (Backeberg & Voll) Buining 1967 Parodia gummifera Backeberg & Voll 1950 Uebelmannia meninensis Buining 1968, U. gummifera subsp. meni-nensis (Buining) P.J. Braun & Esteves 1995

Plants globose to slightly elongate, gray-green, to 10 cm (3.9 in) high and 6 cm (2.4 in) in diameter. Ribs about 32, tuberculate at first, later narrow and continuous. Areoles grayish white, nearly confluent and encompassing the stems. Central spine one, straight, gray, pointing slightly upward. Radial spines 3, one pointing slighdy downward, to 5 mm long. Flowers bright yellow, to 2 cm (0.8 in) long and 1.5 cm (0.6 in) in diameter. Fruits yellowish green, to 8 mm (0.3 in) long and 6 mm (0.2 in) in diameter. Distribution: Serra de Ambrosia, Minas Gerais, Brazil. Uebelmannia gummifera is listed in Appendix I of cites.

Uebelmannia pectinifera Buining 1967 Uebelmannia pectinifera var. pseudopectinifera Buining 1972 Uebelmannia flavispina Buining & Brederoo 1973, U. pectinifera svbsp.flavispina (Buining & Brederoo) P. J. Braun & Esteves 1995 Uebelmannia pectinifera var. multicostata Buining & Brederoo 1975 Uebelmannia pectinifera var. horrida P.J. Braun 1984, U. pectinifera subsp. horrida (P. J. Braun) P.J. Braun &Esteves 1995

Plants more or less cylindrical, dark reddish brown, to 75 cm (30 in) high, to 15 cm (5.9 in) in diameter, usually covered

with waxy white scales. Ribs 15-40, acute. Areoles nearly confluent, with brownish to gray felt. Spines 1-4, brown to nearly black, erect, often interlacing, to 20 mm (0.8 in) long. Flowers slender funnelform, to 1.5 cm (0.6 in) long and 1 cm (0.4 in) in diameter. Fruits pear shaped to cylindrical, violet-red, 1.5-2.5 cm (0.6-1 in) long. Distribution: mountains of Minas Gerais, Brazil.

Uebelmannia pectinifera is listed in Appendix I of cites. Three subspecies of U. pectinifera are recognized; the differences seem to be slight, and all three occur within a fairly limited region of Minas Gerais. Subspecies pectinifera has stems with 18 ribs and reaches about 50 cm (20 in) in height; it occurs in the higher mountains. Subspecies flavispina has stems with as many as 29 ribs and is about 35 cm (14 in) in height; it occurs west of Diamantina. Subspecies horrida has stems with more than 23 ribs and reaches 1 m (3.3 ft) in height; it occurs in the Serra do Espinha^o.

Uebelmannia pectinifera

676 Weberbauerocereus

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