玄武(Echinocereus blanckii)。鹿角柱属(Echinocereus)。原产北美墨西哥及中美一带。植株多分枝丛生,柱状,直径3.5厘米,长20厘米,体青绿色。6—7个棱呈螺旋状排列。刺座着生于乳突顶端,周刺6—8枚呈放射状,长1—1.2厘米,白至紫褐色,中刺1枚(培养最佳时中刺可生3枚)长约2—3厘米。大轮花呈钟状,直径约8厘米,呈紫色,雌蕊柱头为翠绿色,雄蕊为黄色,外观非常美丽动人。花期在5—6月,白天开放晚上闭合,不受直射阳光照射可持续开5—8天。栽培:本种生长强健,喜阳光充足,耐半阴的栽 Basaltic (Echinocereus blanckii). Antler (Echinocereus). Native North America Mexico and China and the United States. Branches more than tufted, columnar, 3.5 cm in diameter, 20 cm long, body turquoise. 6-7 ribs arranged spirally. Prothisis was born in the top of the mastoid, weeks sting 6-8 radial, 1-1.2 cm long, white to purple-brown, stabbed a (best training stabbed 3) about 2-3 cm. Large round flower was bell-shaped, about 8 cm in diameter, purple, pistil stigma emerald green, stamens yellow, the appearance is very beautiful and moving. Flowering in May-June, open during the day and closed at night, not exposed to direct sunlight can be sustained open 5-8 days. Cultivation: This kind of growth robust, hi sunny enough, resistant to half-shade planted