27蚌花

蚌花

Tradescantia spathacea

. 蚌花，又名紫背万年青、紫锦兰，是鸭跖草科的一种多年生草本植物，
茎短，叶密生成束抱茎，叶剑状，重叠，叶面青绿色，背面紫色，花白色，
生于两片河蚌般紫色萼片内。花期 8-10 月。以花叶入药，可用于肺燥咳
嗽，咯血，百日咳，淋巴结结核，痢疾，便血。

Tradescantia spathacea, the boatlily[1] or Moses-in-the-cradle, is a
herb in th伞e 形Co花m序m腋el生ina，c长eae8～fa1m0i厘ly 米fir，st 小de花sc1ri0b～ed30in朵1，78萼8.片It5is枚n，ati合ve生为五棱
tthoeBYeluizcea,t状áGn杯uPa形tee，nmin顶asl端ual,a急a)n尖bdu。tsow花uid较the小elyrn有cuM刚ltei毛vxai，cteo花d(C冠ash筒iaa长npao约sr,n1Ta厘mabe米ans，tcao金l ,a黄annd色dn，aturalized
in parts of Florida, Texas, Hawaii, and various oceanic islands.[2][3][4]

Tradescantia spathacea has naturalized in Florida and Louisiana and is
listed as a Category I invasive exotic species by the Florida Exotic Pest Plant
Council. This means that it is known to be "invading and disrupting native plant
communities in Florida."

Tradescantia spathacea has fleshy rhizomes and rosettes of waxy lance-
shaped leaves. Leaves are dark to metallic green above, with glossy purple
underneath. These will reach up to 1 foot (0.30 m) long by 3 inches (76 mm)
wide. They are very attractive foliage plants that will reach 1 foot (0.30 m) tall.
They are hardy in USDA zones 9-12and are also grown as ornamental
houseplants.

Uses

American Indians used T. virginiana to treat a number of conditions, including
stomachache and cancer. It was also used as a food source.[18] The cells of
the stamen hairs of some Tradescantia are colored blue, but when exposed to
sources of ionizing radiation such as gamma rays, the cells mutate and change
color to pink; they are one of the few tissues known to serve as an
effective bioassay for ambient radiation levels.[6][18]