Mammillaria bicolor f. nobilis
Handb. Kakteenkult. 263. 1907
科
Cactaceae
种
Mammillaria bicolor f. nobilis
命名人
(Pfeiff.) Schelle
中文属名
乳突球属
中文名
-
描述编辑描述
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、刺密集的物种。有些个体会强烈丛生,最终形成直径30至90厘米的大株丛,具有许多宽阔而坚硬的茎。其中 var. nobilis 是该属中最优良的品种之一,其特点是中刺数量较少但更长,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