[一花一木一世界] 錦葉紅龍草學名Alternanthera dentata cv. Red Marble,英文名Ruby Leaf、Moench、Rainbow,莧科蓮子草(滿天星)屬多年生草本植物,又稱赤葉千日紅,原產於西印度群島至巴西一帶,植株低矮植株高約十五至五十公分,嫩枝直立,老枝有橫張性,莖多分枝,長莖呈半匍匐性,莖紫褐色,單葉對生,葉橢圓形,先端漸尖,基部漸狹,全緣葉,紙質,略具光澤,葉面皺摺感,葉紫褐色,葉緣與葉面有玫瑰紅斑紋,葉脈明顯,葉柄長約六至十公釐,兩性花,頭狀花序,單生於枝頂,花序近球形,如白色小球,徑約十五至二十公釐,二至三花序並生,分歧,花梗長,具苞片與小苞片,小苞片白色,膜質,宿存,花被片五枚,披針形,乳白色,乾膜質,雄蕊二至五枚,花絲基部合生管狀或短杯狀,先端五裂,退化雄蕊全緣、齒裂或條裂,花藥一室,雌蕊心皮二、三枚,合生,柱頭頭狀,子房一室,子房上位,基生胎座,胞果,近球形。
常見之園藝莧科蓮子草屬觀賞品種有: Alternanthera axillaris(腋花錦莧) Alternanthera bettzickiana(毛蓮子草、毛蓮) Alternanthera bettzickiana 'Brilliantissima'(錦繡莧、五色草、紅草、紅節節草、紅蓮子草) Alternanthera brasiliana(巴西蓮子草、紅龍草) Alternanthera brasiliana 'Gail's Choice' Alternanthera brasiliana 'Purple Knight' Alternanthera brasiliana 'Red Marble' Alternanthera brasiliana 'Royal Tapestry' Alternanthera brasiliana 'Rubiginosa' Alternanthera caracasana(刺花蓮子草) Alternanthera dentata(齒葉錦莧) Alternanthera dentata 'Red Marble'(錦葉紅龍草) Alternanthera dentata 'Ruliginosa'(紅龍草) Alternanthera denticulata Alternanthera ficoidea(法國莧、綠莧草、錦莧、綠錦莧) Alternanthera ficoidea 'Amoena'(彩莧草、五色莧、洋莧、青葉模樣莧、鸚啄莧、模樣莧、紅綠莧) Alternanthera ficoidea 'Aurea' Alternanthera ficoidea 'Aurea Nana'(黃莧草、黃錦莧、黃葉莧、黃葉法國莧、金黃姬錦莧) Alternanthera ficoidea 'Brazilian Snow'(白莧草、白邊莧) Alternanthera ficoidea 'Chartreuse' Alternanthera ficoidea 'Creme de Menthe' Alternanthera ficoidea 'Gold threads' Alternanthera ficoidea 'Grenadine' Alternanthera ficoidea 'Mai Tai' Alternanthera ficoidea 'New Burgundy' Alternanthera ficoidea 'New Red'(紅莧草) Alternanthera ficoidea 'Partytime'(擬美人、霓虹莧) Alternanthera ficoidea 'Red Carpet' Alternanthera ficoidea 'Red Threads' Alternanthera ficoidea 'Rosea Nana' Alternanthera ficoidea 'Snowball' Alternanthera ficoidea 'Snow Carpet'(白莧草、白邊莧) Alternanthera ficoidea 'Snow on the Mountain' Alternanthera ficoidea 'Variegata'(白莧草、白邊莧) Alternanthera ficoidea 'White Carpet'(花葉法國莧) Alternanthera flavescens Alternanthera hassleriana Alternanthera maritima Alternanthera nodiflora(蓮子草、節節花) Alternanthera paronichyoides(匙葉蓮子草、綠莧草、紅莧草) Alternanthera philoxeroides(空心蓮子草) Alternanthera pungens(尖刺蓮子草、刺花蓮子草) Alternanthera reineckii(瑞氏蓮子草、血心蘭、小血心蘭) Alternanthera reineckii 'Lilacina' Alternanthera reineckii 'Needle Leaf' Alternanthera reineckii 'Pink' Alternanthera reineckii 'Purple'(大葉血心蘭) Alternanthera reineckii 'Roseafolia' Alternanthera sessilis(蓮子草、節節花) Alternanthera sessillis 'Alba'(雪莧、白雪莧) Alternanthera 'Brazilian Red Hots'
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