Mammillaria albicoma Boedeker 1929

Plants branching basally, often forming flat mounds with spines obscuring the stems. Stems flattened globose to short cylindrical, to 5 cm (2 in) high, 3-5 cm (1.2-2 in) in diameter. Tubercles conical to cylindrical, spirally arranged, bright green, truncate apically, without latex, axils with felt and bristles. Central spines 3-4, sometimes absent, straight, white with reddish brown tips, 4-5 mm long. Radial spines 30-40, hairlike, white, 8-10 mm (0.3-0.4 in) long. Flowers wide fun-nelform, pale greenish yellow to cream, 10-15 mm (0.4-0.6 in) long and in diameter. Fruits red, small. Seeds black. Distribution: Tamaulipas, Mexico.

Mammillaria albiflora (Werdermann) Backeberg 1937 Mammillaria herrerae var. albiflora Werdermann 1931

Plants usually solitary, sometimes forming clusters with the stems obscured by spines. Stems somewhat cylindrical, slender, to 5 cm (2 in) or more high, 1-2 cm (0.4-0.8 in) in diameter. Tubercles small, without latex, axils naked. Spines 60-80, short, white, interlacing, fine. Flowers white with pale pinkish flush, to 35 mm (1.4 in) long and 25 mm (1 in) in diameter. Distribution: Guanajuato, Mexico.

Mammillaria albilanata Backeberg 1939 Mammillaria ignota Loudon 1841, not validly published Mammillaria fuauxiana Backeberg 1950 Mammillaria tegelbergiana H. E. Gates ex G. E. Lindsay 1966, M. albilanata subsp. tegelbergiana (H. E. Gates ex G. E. Lindsay) D. R. Hunt 1997

Mammillaria reppenhagenii D. R. Hunt 1977, M. albilanata subsp. rep-

penhagenii (D. R. Hunt) D. R. Hunt 1997 Mammillaria lanigera Reppenhagen 1987

Mammillaria noureddineana Reppenhagen 1987 Mammillaria igualensis Reppenhagen 1989 Mammillaria monticola Reppenhagen 1989 Mammillaria albilanata subsp. oaxacana D. R. Hunt 1997

Plants usually solitary, sometimes several-stemmed with age. Stems globose to short cylindrical, sunken apically, to 15 cm (5.9 in) high and 8 cm (3.1 in) in diameter. Tubercles gray-green, spiraling, firm, without latex, axils coarsely woolly. Central spines 2-4, stiff, straight, white to cream, with brownish tips, 2-3 mm long. Radial spines 15-26, stiff, straight to slightly curved, chalky white, 2-4 mm long. Flowers carmine to purplish pink to pink, to 7 mm (0.3 in) long. Fruits pink to red. Seeds pale brown. Distribution: Guerrero, Oaxaca, Puebla, Chiapas, and Colima, Mexico.

Four subspecies of Mammillaria albilanata are recognized. Subspecies albilanata has deep carmine flowers, 15-20 radial spines, and occurs only in Guerrero. Subspecies oaxacana has carmine red to pink flowers, 20-22 radials, and occurs in Oaxaca and Puebla. Subspecies reppenhagenii has carmine flowers with lighter margins, 19-26 radials, and occurs in Colima. Subspecies tegelbergiana has purplish pink flowers, 18-24 radials, and occurs in Chiapas.

Mammillaria amajacensis Brächet, M. Lacoste & f. Otero

1991

Plants usually solitary. Stems globose to short cylindrical, 910 cm (3.5-3.9 in) high and in diameter. Tubercles conical, dark blue green, axils densely woolly. Central spines 2-4, straight, pinkish gray with blackish tips, to 15 mm (0.6 in) long, lower ones longest. Radial spines absent. Flowers pinkish cream with darker midveins. Fruits red. Seeds brown. Distribution: Hidalgo, Mexico.

Mammillaria Albicoma
Mammillaria albicoma

Mammillaria albiflora

406 Mammillaria angelensis

Mammillaria angelensis R. T. Craig 1945 Ebnerella angelensis (R. T. Craig) Buxbaum 1951, Chilita angelensis (R. T. Craig) Buxbaum 1954, Mammillaria dioica subsp. angelensis (R.T.Craig) D.R.Hunt 1998

Plants usually solitary, sometimes clustering. Stems globose to short cylindrical, to 15 cm (5.9 in) high and 6 cm (2.4 in) in diameter. Tubercles conical, blue-green, axils densely woolly and with white bristles to 10 mm (0.4 in) long. Central spines 3-4, straight, purplish brown with lighter bases, to 15 mm (0.6 in) long, lower one hooked and longer. Radial spines 16-20, straight, smooth, stiff, white, 5-10 mm (0.20.4 in) long. Flowers white to darker, with pinkish midveins, to 20 mm (0.8 in) long and 30 mm (1.2 in) in diameter. Fruits red. Seeds black. Distribution: Ángel de la Guarda and Ventana Islands, and the region of Bahía de Los Angeles on the Baja California Peninsula, Mexico.

Mammillaria anniana Glass & R. Foster 1981

Plants usually many-stemmed. Stems globose to flattened globose, apple green, to 3 cm (1.2 in) high and in diameter. Tubercles tapering gradually, round in cross section, without latex, axils with tufts of wool and twisted hairs. Spines not readily distinguishable as centrals and radials. Central spines 5-9, needle-like, yellow to golden amber, stiff, 9-12 mm (0.4-0.5 in) long, mostly straight, one hooked. Radial spines 13-14, yellowish white, stiff, thin, straight, 6-11 mm (0.2-0.4 in) long. Flowers not opening widely, pale whitish yellow, 8-12 mm (0.3-0.5 in) long; pericarpels unusually long. Fruits red, 10-15 mm (0.4-0.6 in) long. Seeds black. Distribution: Tamaulipas, Mexico.

Mammillaria armillata K. Brandegee 1900 Neomammillaria armillata (K. Brandegee) Britton & Rose 1923, Chilita armillata (K. Brandegee) Orcutt 1926, Ebnerella armillata (K. Brandegee) Buxbaum 1951

Plants solitary at first, later clustering. Stems slender cylindrical, to 30 cm (12 in) high, 4-5 cm (1.6-2 in) in diameter. Tubercles blue-green, conical to cylindrical, firm, without latex, axils with wool and bristles. Central spines 1-4, stout, yellowish gray, becoming darker with age, 10-20 mm (0.40.8 in) long, one strongly hooked. Radial spines 9-15, interwoven, whitish, thin and bristle-like straight, 7-12 mm (0.30.5 in) long. Flowers funnelform, pinkish creamy yellow, to 20 mm (0.8 in) long and in diameter. Fruits club shaped, red. Seeds black. Distribution: Baja California Sur, Mexico.

Continue reading here: Mammillaria aureilanata Backeberg 1938

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