Xerophyte

Description

Coryphantha macromerisSN|10268]]SN|10268]] is small plant profusely branched with long projecting spines, ultimately forming low mats or hemispheric mounds to 100 cm diameter. The ssp. runyonii is distinguishable for the grey-green stems up to 7.5 cm high and tubercles to 7.5 mm long.

Roots

It has deep succulent taproot often massive and large.

Note

The flowers of C. macromeris are virtually identical to those of Mammillaria wrightiiSN|9411]]SN|9411]] and Escobaria viviparaSN|9953]]SN|9953]]

Flowers

Apical or nearly so at mid-level of tubercle, outer tepals heavily fringed; flower bright rose-pink or magenta, often with darker midstripes and paler margins

Spines

Weakly appressed or projecting, slightly curved, often flexible. Radial 9-15 per areole, white, grey, tan, or brown, 15-25 mm long; subcentral spines 2-3 in adaxial part of areole; central spines 3-8 per areole, pale grey to black, abaxial central spine porrect or descending,

Stem

Noticeably tuberculate, hemispheric to short cylindrical, sometimes obscured by profusion of immature branches, 4-12 cm; tubercles unusually large 15-25 mm and grooved only on the upper half, flaccid or flabby; areolar glands seasonally conspicuous;