Xerophyte

Habit

It is a solitary globose cactus that may clump with age. Plant has flattened ribs resembling Lophophora, the ones that lack spines look so much like peyote that the uninformed may think they actually are.

Note

Paul Hutchinson of the University of California Botanical Gardens discovered Matucana madisoniorumSN|2238]]SN|2238]] about 1963 or so in a valley in Peru.

Flowers

Zygomorphic tending to lean on one side, white to cream/white, 3.5 cm in diameter, and slightly longer 5-7 (10) cm long.

Blooming Season

Flowers more than once in several flushes throughout the summer.

Spines

Sometimes individual plants may be almost entirely spineless, while other specimens are covered with spines or have spines missing on parts of the plant. Seedlings of this species are all densely covered with long, curving spines; however, seedlings from plants growing at lower altitudes will ordinarily lose their spines at maturity, while those from higher altitudes keep theirs, but it is very variable in this respect, and spineless plants can grow spiny offsets, or get just an occasional spine.

Stem

Flat globular to elongate with age up to 15 cm tall and 10 cm in diameter. One of most endearing feature of this plant is its unusual rough textured blue or grey-green epidermis.