Xerophyte

中刺

2 (to 6) pure white or white with dark tip that protrude far out from the rest, straight or slightly curved, up to 4 cm long (or more).

种子

Brown.

描述

Mammillaria geminispinaSN|14012]]SN|14012]] 是一种高度多变、密布棘刺的物种。部分植株具有强烈的丛生倾向，最终可长成直径30至90厘米的大株型，具许多宽而坚硬的茎干。其中 var. nobilis 是该属中最优良的种类之一，其特点是中央刺数量较少但更长，且长度相近。

疣突

Rounded with latex. The axil is filled by white wool and 10 - 20 long white bristles.

花

Campanulate, pinkish to carmine red, with darker midveins, to 20 mm long and in diameter usually in a ring in the growth of the previous year but sometime more randomly over the body. If grown from seed, M. geminispina can take seven to eight years before flowering.

刺

Spines variable but noticeably longer then in other form and varieties.

茎

Short cylindrical, light green whit latex, up to 18 cm high and 8 cm in diameter.

辐射刺

16 to 20 chalky white, interlacing up to 7 mm long.

果实

Red