Subspecies, varieties, forms and cultivars of plants belonging to the Matucana haynei group

• Matucana comacephala F.Ritter: (subs. myriacantha) has solitary globular to cylindrical stems with cream-coloured spines and large pink to sometimes orange-red blossoms. Distribution: Ancash, Cordillera blanca, Peru.
• Matucana crinifera F.Ritter: (subs. haynei) stem densely covered by yellowish-white, hair-like spines and showy blossoms, white at the bottom pinkir to red on top. Distribution: Machac, Ancash, Peru.
• Matucana crinifera f. cristata hort.: (subs. haynei) Crested form.
• Matucana haynei (Otto) Britton & Rose: (subs. haynei) has stems to 30 cm high and at least 30 spines: Distribution: Matucana.
• Matucana haynei subs. herzogiana (Backeb.) Mottram: usually less than 10 cm high with relatively few, more or less curved, setaceous spines. Distribution: Cordillera Negra.
• Matucana haynei subs. hystrix (Rauh & Backeb.) Mottram: has cylindrical stems to 30 cm high, 4 distinct dark brown central spines, and numerous radials. Distribution: Nazca, Ica, and Lucanas, Ayacucho.
• Matucana haynei subs. hystrix var. atrispina Rauh & Backeb.: like Matucana haynei subs. hystrix but with more robust blackish spines, ash-grey and conspicuously swollen at the base. Distribution: Nazca to Lucamas and adjacent areas, southern Peru.
• Matucana haynei subs. myriacantha (Vaupel) Mottram: has very short stems, rarely more than 8 cm high, and as many as 10 central spines and 25 radials. Distibution: above Balsas, Cajamarca.
• Matucana herzogiana var. perplexa Backeb.: similar to Matucana haynei subs. herzogiana, but with more numerous and longer spines. The flowers are bright red and zygomorphic. Distribution: Cordillera Negra, Peru
• Matucana multicolor Rauh & Backeb. in Backeb.: has multicoloured spination. The central spines ranges from amber, to black-brown, to black-violet, or nearly white. Distribution: Nazca-Puquio road at about 4,100m ASL.
• Matucana myriacantha f. roseoalba (hort., F.Ritter) Lodé: (subs. myriacantha) has dense cream coloured spines cover almost completely the plants body. Flowers are glossy pink and white, tubular and zigomorphyc.
• Matucana variabilis Rauh & Backeb. in Backeb.: (subs. haynei) It has thin variable spines (cream to amber coloured) suggesting the epithet. Distribution: Ancash, Peru.
• Matucana villarica n.n.: Brewster County, Texas, USA.
• Matucana yanganucensis Rauh & Backeb. in Backeb.: (subs. haynei) Same as Matucana haynei.