十二卷屬

十二卷屬（拉丁學名：Haworthia Duval），又叫瓦葦屬、蛇尾蘭屬，是黃脂木科下的一屬植物，原產地大多在南非，共有150種以上植物，被廣泛用於園藝栽培。 該屬在我國曾被叫做瓦葦屬。十二卷屬是近年較為流行的植物 ，其品種繁多，形態各異 ，株形大多小巧玲瓏，清秀典雅 ，非常適合個人栽培觀賞 。在眾多的十二卷品種 中，既有適合普通家庭栽培的條紋十二卷、水晶掌等 ，用 以點綴几案、 書桌、電腦桌、窗台等處，效果獨特；也有適合高級愛好者收集栽培的玉扇、萬象等品種。十二卷屬植物的共同特徵是植株矮小 ，單生或叢生 ，葉片大多數呈蓮座狀排列 ，少有兩列疊生或螺鏇形排列成圓筒狀。總狀花序 ，小花白綠色。

基本信息

• 中文學名：十二卷屬
• 別名：瓦葦屬、蛇尾蘭屬
• 拉丁學名：Haworthia Duva
• 界：植物界
• 門：被子植物門
• 綱：單子葉植物綱(或百合綱)
• 目：天門冬目
• 科：黃脂木科
• 亞科：阿福花亞科(獨尾草亞科)
• 屬：十二卷屬
• 分布區域：南非野外、作為盆栽在世界各地

形態特徵

多年生旱生多汁草本，植株較小。無莖或有短莖，葉肉質，通常較小，長在10厘米以下，葉集生莖上或輻射狀基生。花莖從葉叢中伸出，總狀花序；花小形或中等大小，花白色，有綠色或粉紅色條紋，花被片6，下部結合成圓筒狀，上部裂片長圓形，不整齊反卷；雄蕊6，短於花被片；子房無柄，3室，具多數胚珠。蒴果，三果瓣，室背開裂；種子扁而有棱。

主要分類

十二卷屬

十二卷按葉片軟硬可分為軟葉系亞屬、硬葉系亞屬和大型硬葉系亞屬3類。

軟葉系：葉質較軟，葉片短而肥，通常頂端較肥厚或呈截形，有透明或半透明的 "窗" ,並有明顯的脈紋 .光線可透過 "窗"進入植株體 內進行光合作用。 如毛漢 十二卷、綠玉扇、青蟹、靜鼓、白銀壽 、京之華錦，冰燈玉露等。

硬葉系：其葉質較硬，葉片劍形或三角形，大多數品種 葉面上有白色疣突，具有反射強烈 陽光 的生 理 作用。如青 瞳、十二之縞、象牙之塔 、 雄姿城 、龍城、東之星座、龍鱗等。 其中，大型硬葉系亞屬的天使之淚、環紋冬之星座錦 、瑞鶴錦目前國記憶體量不多，因此價格不菲。

綜合還可分為塔型 （如九輪塔）、殿型 （如琉璃殿）、條紋型 （如條紋十二卷錦）、截型 （如玉扇）、 珠型 （如玉露）等。

十二卷的多種形態

十二卷屬全屬約150餘種，按植株和葉的形態分為硬葉類和軟葉類兩類。硬葉類植物葉面常被白色斑點，或結節成條狀(縞狀)；軟葉類葉多汁透明，葉緣常有美麗的毫毛，葉的上部常呈透明狀，有的呈明顯的“窗”狀結構(如壽、萬象)。

條紋十二卷Haworthia fasciata (Willd.) Haw.：葉片輪生在莖軸上，呈蓮座狀；葉三角狀披針形，葉面深綠色，具較大的排列成橫條紋白色瘤狀突起(縞狀)；

康氏十二卷Haworthia comptoniana：葉上半部呈水平狀三角形，並透明形成“窗”，“窗”上有綠色紋理，葉緣有小齒狀突起。

屬下物種

以下表格內容參考

Name	Status	Date supplied
Haworthia agnis Battista	Accepted	2012-3-26
Haworthia akaonii M.Hayashi	Accepted	2012-3-26
Haworthia albispina M.Hayashi	Accepted	2012-3-26
Haworthia amethysta M.Hayashi	Accepted	2012-3-26
Haworthia angustifolia Haw.	Accepted	2012-3-26
Haworthia angustifolia var. altissima M.B.Bayer	Accepted	2012-3-26
Haworthia angustifolia var. baylissii (C.L.Scott) M.B.Bayer	Accepted	2012-3-26
Haworthia angustifolia var. paucifolia G.G.Sm.	Accepted	2012-3-26
Haworthia ao-onii M.Hayashi	Accepted	2012-3-26
Haworthia aquamarina M.Hayashi	Accepted	2012-3-26
Haworthia arabesqua M.Hayashi	Accepted	2012-3-26
Haworthia arachnoidea (L.) Duval	Accepted	2012-3-26
Haworthia arachnoidea var. aranea (A.Berger) M.B.Bayer	Accepted	2012-3-26
Haworthia arachnoidea var. namaquensis M.B.Bayer	Accepted	2012-3-26
Haworthia arachnoidea var. nigricans (Haw.) M.B.Bayer	Accepted	2012-3-26
Haworthia arachnoidea var. scabrispina M.B.Bayer	Accepted	2012-3-26
Haworthia arachnoidea var. setata (Haw.) M.B.Bayer	Accepted	2012-3-26
Haworthia arachnoidea var. xiphiophylla (Baker) Halda	Accepted	2012-3-26
Haworthia aristata Haw.	Accepted	2012-3-26
Haworthia attenuata (Haw.) Haw.	Accepted	2012-3-26
Haworthia attenuata var. radula (Jacq.) M.B.Bayer	Accepted	2012-3-26
Haworthia azurea M.Hayashi	Accepted	2012-3-26
Haworthia baker 1896. Fc.	Accepted	2012-4-18
Haworthia batesiana Uitew.	Accepted	2012-4-18
Haworthia bathylis M.Hayashi	Accepted	2012-3-26
Haworthia bayeri J.D.Venter & S.A.Hammer	Accepted	2012-3-26
Haworthia bella M.Hayashi	Accepted	2012-3-26
Haworthia bicarinata Parr	Accepted	2012-4-18
Haworthia blackburniae W.F.Barker	Accepted	2012-3-26
Haworthia blackburniae var. derustensis M.B.Bayer	Accepted	2012-3-26
Haworthia blackburniae var. graminifolia (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia bolusii Baker	Accepted	2012-3-26
Haworthia bolusii var. blackbeardiana (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia borealis M.Hayashi	Accepted	2012-3-26
Haworthia breueri M.Hayashi	Accepted	2012-3-26
Haworthia bronkhorstii M.Hayashi	Accepted	2012-3-26
Haworthia bruynsii M.B.Bayer	Accepted	2012-3-26
Haworthia caerulea M.Hayashi & Breuer	Accepted	2012-3-26
Haworthia caesia M.Hayashi	Accepted	2012-3-26
Haworthia calaensis Breuer	Accepted	2012-3-26
Haworthia calva M.Hayashi	Accepted	2012-3-26
Haworthia candida M.Hayashi	Accepted	2012-3-26
Haworthia capillaris M.Hayashi	Accepted	2012-3-26
Haworthia chloracantha Haw.	Accepted	2012-3-26
Haworthia chloracantha var. denticulifera (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia chloracantha var. subglauca Poelln.	Accepted	2012-3-26
Haworthia coarctata Haw.	Accepted	2012-3-26
Haworthia coarctata var. adelaidensis (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia coarctata f. greenii (Baker) M.B.Bayer	Accepted	2012-3-26
Haworthia coarctata var. tenuis (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia compacta (Triebner) Breuer	Accepted	2012-3-26
Haworthia cooperi Baker	Accepted	2012-3-26
Haworthia cooperi var. dielsiana (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia cooperi var. doldii M.B.Bayer	Accepted	2012-3-26
Haworthia cooperi var. gordoniana (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia cooperi var. leightonii (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia cooperi var. pilifera (Baker) M.B.Bayer	Accepted	2012-3-26
Haworthia cooperi var. truncata (H.Jacobsen) M.B.Bayer	Accepted	2012-3-26
Haworthia cooperi var. venusta (C.L.Scott) M.B.Bayer	Accepted	2012-3-26
Haworthia crausii M.Hayashi	Accepted	2012-3-26
Haworthia crinita M.Hayashi	Accepted	2012-3-26
Haworthia crystallina M.Hayashi	Accepted	2012-3-26
Haworthia cummingii Breuer & M.Hayashi	Accepted	2012-3-26
Haworthia cymbiformis (Haw.) Duval	Accepted	2012-3-26
Haworthia cymbiformis var. angustata Poelln.	Accepted	2012-3-26
Haworthia cymbiformis var. incurvula (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia cymbiformis var. obtusa (Haw.) Baker	Accepted	2012-3-26
Haworthia cymbiformis var. ramosa (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia cymbiformis var. reddii (C.L.Scott) M.B.Bayer	Accepted	2012-3-26
Haworthia cymbiformis var. setulifera (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia cymbiformis var. transiens (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia davidii (Breuer) M.Hayashi & Breuer	Accepted	2012-3-26
Haworthia decipiens Poelln.	Accepted	2012-3-26
Haworthia decipiens var. cyanea M.B.Bayer	Accepted	2012-3-26
Haworthia decipiens var. minor M.B.Bayer	Accepted	2012-3-26
Haworthia decipiens var. pringlei (C.L.Scott) M.B.Bayer	Accepted	2012-3-26
Haworthia decipiens var. virella M.B.Bayer	Accepted	2012-3-26
Haworthia devriesii Breuer	Accepted	2012-3-26
Haworthia diaphana M.Hayashi	Accepted	2012-3-26
Haworthia diversicolor (Triebner & Poelln.) M.Hayashi	Accepted	2012-3-26
Haworthia elizeae Breuer	Accepted	2012-3-26
Haworthia emelyae Poelln.	Accepted	2012-3-26
Haworthia emelyae var. comptoniana (G.G.Sm.) J.D.Venter & S.A.Hammer	Accepted	2012-3-26
Haworthia emelyae var. major (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia emelyae var. multifolia M.B.Bayer	Accepted	2012-3-26
Haworthia emeralda M.Hayashi	Accepted	2012-3-26
Haworthia eminens M.Hayashi	Accepted	2012-3-26
Haworthia enigma M.Hayashi	Accepted	2012-3-26
Haworthia esterhuizenii M.Hayashi	Accepted	2012-3-26
Haworthia exilis M.Hayashi	Accepted	2012-3-26
Haworthia fasciata (Willd.) Haw.	Accepted	2012-3-26
Haworthia flavida M.Hayashi	Accepted	2012-3-26
Haworthia floccosa M.Hayashi	Accepted	2012-3-26
Haworthia florens M.Hayashi	Accepted	2012-3-26
Haworthia floribunda Poelln.	Accepted	2012-3-26
Haworthia floribunda var. dentata M.B.Bayer	Accepted	2012-3-26
Haworthia floribunda var. major M.B.Bayer	Accepted	2012-3-26
Haworthia fluffa M.Hayashi	Accepted	2012-3-26
Haworthia foliosa Haw.	Accepted	2012-4-18
Haworthia fukuyae M.Hayashi	Accepted	2012-3-26
Haworthia fusca Breuer	Accepted	2012-3-26
Haworthia glabrata (Salm-Dyck) Baker	Accepted	2012-3-26
Haworthia glauca Baker	Accepted	2012-3-26
Haworthia glauca var. herrei (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia gracilis Poelln.	Accepted	2012-3-26
Haworthia gracilis var. isabellae (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia gracilis var. picturata M.B.Bayer	Accepted	2012-3-26
Haworthia gracilis var. tenera (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia gracilis var. viridis M.B.Bayer	Accepted	2012-3-26
Haworthia groenewaldii Breuer	Accepted	2012-3-26
Haworthia hamata M.Hayashi	Accepted	2012-3-26
Haworthia harryi M.Hayashi	Accepted	2012-3-26
Haworthia hastata M.Hayashi	Accepted	2012-3-26
Haworthia hayashii M.Hayashi	Accepted	2012-3-26
Haworthia heidelbergensis G.G.Sm.	Accepted	2012-3-26
Haworthia heidelbergensis var. minor M.B.Bayer	Accepted	2012-3-26
Haworthia heidelbergensis var. scabra M.B.Bayer	Accepted	2012-3-26
Haworthia heidelbergensis var. toonensis M.B.Bayer	Accepted	2012-3-26
Haworthia herbacea (Mill.) Stearn	Accepted	2012-3-26
Haworthia herbacea var. flaccida M.B.Bayer	Accepted	2012-3-26
Haworthia herbacea var. lupula M.B.Bayer	Accepted	2012-3-26
Haworthia herbacea var. paynei (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia hisui M.Hayashi	Accepted	2012-3-26
Haworthia hybrida Haw.	Accepted	2012-4-18
Haworthia indigoa M.Hayashi	Accepted	2012-3-26
Haworthia integra Poelln.	Accepted	2012-3-26
Haworthia integra var. standeri Esterhuizen	Accepted	2012-3-26
Haworthia jadea M.Hayashi	Accepted	2012-3-26
Haworthia jakubii Breuer	Accepted	2012-3-26
Haworthia janseneana Uitew.	Accepted	2012-4-18
Haworthia jansenvillensis Breuer	Accepted	2012-3-26
Haworthia jeffreis M.Hayashi	Accepted	2012-3-26
Haworthia kemari M.Hayashi	Accepted	2012-3-26
Haworthia kewensis Poelln.	Accepted	2012-4-18
Haworthia kingiana Poelln.	Accepted	2012-3-26
Haworthia koelmaniorum Oberm. & D.S.Hardy	Accepted	2012-3-26
Haworthia koelmaniorum var. mcmurtryi (C.L.Scott) M.B.Bayer	Accepted	2012-3-26
Haworthia lachnosa M.Hayashi	Accepted	2012-3-26
Haworthia laeta M.Hayashi	Accepted	2012-3-26
Haworthia lapis Breuer & M.Hayashi	Accepted	2012-3-26
Haworthia latericia M.Hayashi	Accepted	2012-3-26
Haworthia ligulata M.Hayashi	Accepted	2012-3-26
Haworthia limifolia Marloth	Accepted	2012-3-26
Haworthia limifolia var. arcana Gideon F.Sm. & N.R.Crouch	Accepted	2012-3-26
Haworthia limifolia var. gigantea M.B.Bayer	Accepted	2012-3-26
Haworthia limifolia var. glaucophylla M.B.Bayer	Accepted	2012-3-26
Haworthia limifolia var. ubomboensis (I.Verd.) G.G.Sm.	Accepted	2012-3-26
Haworthia lockwoodii Archibald	Accepted	2012-3-26
Haworthia longiana Poelln.	Accepted	2012-3-26
Haworthia maculata (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia maculata var. intermedia (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia magnifica Poelln.	Accepted	2012-3-26
Haworthia magnifica var. acuminata (M.B.Bayer) M.B.Bayer	Accepted	2012-3-26
Haworthia magnifica var. atrofusca (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia magnifica var. dekenahii (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia magnifica var. splendens J.D.Venter & S.A.Hammer	Accepted	2012-3-26
Haworthia maraisii Poelln.	Accepted	2012-3-26
Haworthia maraisii var. meiringii M.B.Bayer	Accepted	2012-3-26
Haworthia maraisii var. notabilis (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia marginata (Lam.) Stearn	Accepted	2012-3-26
Haworthia marmorata M.Hayashi	Accepted	2012-3-26
Haworthia marumiana Uitewaal	Accepted	2012-3-26
Haworthia marumiana var. archeri (W.F.Barker ex M.B.Bayer) M.B.Bayer	Accepted	2012-3-26
Haworthia marumiana var. batesiana (Uitewaal) M.B.Bayer	Accepted	2012-3-26
Haworthia marumiana var. dimorpha (M.B.Bayer) M.B.Bayer	Accepted	2012-3-26
Haworthia marxii Gildenh.	Accepted	2012-3-26
Haworthia minor (Aiton) Duval	Accepted	2012-3-26
Haworthia mirabilis (Haw.) Haw.	Accepted	2012-3-26
Haworthia mirabilis var. badia (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia mirabilis var. beukmannii (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia mirabilis var. calcarea M.B.Bayer	Accepted	2012-3-26
Haworthia mirabilis var. consanguinea M.B.Bayer	Accepted	2012-3-26
Haworthia mirabilis var. paradoxa (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia mirabilis var. sublineata (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia mirabilis var. triebneriana (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia mollis M.Hayashi	Accepted	2012-3-26
Haworthia monticola Fourc.	Accepted	2012-3-26
Haworthia monticola var. asema M.B.Bayer	Accepted	2012-3-26
Haworthia mortonii Breuer	Accepted	2012-3-26
Haworthia mucronata Haw.	Accepted	2012-3-26
Haworthia mucronata var. calitzdorpensis Breuer	Accepted	2012-3-26
Haworthia mucronata var. habdomadis (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia mucronata var. morrisiae (Poelln.) Poelln.	Accepted	2012-3-26
Haworthia mucronata var. rycroftiana (M.B.Bayer) M.B.Bayer	Accepted	2012-3-26
Haworthia mutica Haw.	Accepted	2012-3-26
Haworthia mutica var. nigra M.B.Bayer	Accepted	2012-3-26
Haworthia nigra (Haw.) Baker	Accepted	2012-3-26
Haworthia nigra var. diversifolia (Poelln.) Uitewaal	Accepted	2012-3-26
Haworthia nigrata M.Hayashi	Accepted	2012-3-26
Haworthia nortieri G.G.Sm.	Accepted	2012-3-26
Haworthia nortieri var. globosiflora (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia nortieri var. pehlemanniae (C.L.Scott) M.B.Bayer	Accepted	2012-3-26
Haworthia oculata M.Hayashi	Accepted	2012-3-26
Haworthia odetteae Breuer	Accepted	2012-3-26
Haworthia ohkuwae M.Hayashi	Accepted	2012-3-26
Haworthia opalina M.Hayashi	Accepted	2012-3-26
Haworthia outeniquensis M.B.Bayer	Accepted	2012-3-26
Haworthia pallens Breuer & M.Hayashi	Accepted	2012-3-26
Haworthia pallidifolia (G.G.Sm.) M.Hayashi	Accepted	2012-3-26
Haworthia parksiana Poelln.	Accepted	2012-3-26
Haworthia pectinis M.Hayashi	Accepted	2012-3-26
Haworthia pilosa M.Hayashi	Accepted	2012-3-26
Haworthia pubescens M.B.Bayer	Accepted	2012-3-26
Haworthia pubescens var. livida M.B.Bayer	Accepted	2012-3-26
Haworthia pulchella M.B.Bayer	Accepted	2012-3-26
Haworthia pulchella var. globifera M.B.Bayer	Accepted	2012-3-26
Haworthia pumila (L.) Duval	Accepted	2012-3-26
Haworthia pungens M.B.Bayer	Accepted	2012-3-26
Haworthia pusilla M.Hayashi	Accepted	2012-3-26
Haworthia pygmaea Poelln.	Accepted	2012-3-26
Haworthia pygmaea var. argenteomaculosa (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia regalis M.Hayashi	Accepted	2012-3-26
Haworthia regina M.Hayashi	Accepted	2012-3-26
Haworthia reinwardtii (Salm-Dyck) Haw.	Accepted	2012-3-26
Haworthia reinwardtii var. brevicula G.G.Sm.	Accepted	2012-3-26
Haworthia reinwardtii f. chalumnensis (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia reinwardtii f. kaffirdriftensis (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia reinwardtii f. olivacea (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia reinwardtii f. zebrina (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia reticulata (Haw.) Haw.	Accepted	2012-3-26
Haworthia reticulata var. hurlingii (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia reticulata var. subregularis (Baker) M.B.Bayer	Accepted	2012-3-26
Haworthia retusa (L.) Duval	Accepted	2012-3-26
Haworthia salina (Poelln.) M.Hayashi	Accepted	2012-3-26
Haworthia sapphaia M.Hayashi	Accepted	2012-3-26
Haworthia scabra Haw.	Accepted	2012-3-26
Haworthia scabra var. johanii M.Hayashi	Accepted	2012-3-26
Haworthia scabra var. lateganiae (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia scabra var. morrisiae (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia scabra var. starkiana (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia schoemanii M.Hayashi	Accepted	2012-3-26
Haworthia scottii Breuer	Accepted	2012-3-26
Haworthia semiviva (Poelln.) M.B.Bayer	Accepted	2012-3-26
Haworthia serrata M.B.Bayer	Accepted	2012-3-26
Haworthia sordida Haw.	Accepted	2012-3-26
Haworthia sordida var. lavranii C.L.Scott	Accepted	2012-3-26
Haworthia sparsa M.Hayashi	Accepted	2012-3-26
Haworthia specksii Breuer	Accepted	2012-3-26
Haworthia springbokvlakensis C.L.Scott	Accepted	2012-3-26
Haworthia subhamata M.Hayashi	Accepted	2012-3-26
Haworthia subularis M.Hayashi	Accepted	2012-3-26
Haworthia succinea M.Hayashi	Accepted	2012-3-26
Haworthia tarkasia M.Hayashi	Accepted	2012-3-26
Haworthia × tauteae Archibald	Accepted	2012-3-26
Haworthia teres M.Hayashi	Accepted	2012-3-26
Haworthia tessellata Baker	Accepted	2012-4-18
Haworthia tradouwensis Breuer	Accepted	2012-3-26
Haworthia tretyrensis Breuer	Accepted	2012-3-26
Haworthia tricolor (Breuer) M.Hayashi	Accepted	2012-3-26
Haworthia truncata Schönland	Accepted	2012-3-26
Haworthia truncata var. maughanii (Poelln.) Halda	Accepted	2012-3-26
Haworthia truncata var. minor Breuer	Accepted	2012-3-26
Haworthia turgida Haw.	Accepted	2012-3-26
Haworthia turgida var. longibracteata (G.G.Sm.) M.B.Bayer	Accepted	2012-3-26
Haworthia turgida var. suberecta Poelln.	Accepted	2012-3-26
Haworthia unicolor Poelln.	Accepted	2012-4-18
Haworthia variegata L.Bolus	Accepted	2012-3-26
Haworthia variegata var. hemicrypta M.B.Bayer	Accepted	2012-3-26
Haworthia variegata var. modesta M.B.Bayer	Accepted	2012-3-26
Haworthia variegata var. petrophila M.B.Bayer	Accepted	2012-3-26
Haworthia veltina M.Hayashi	Accepted	2012-3-26
Haworthia venetia M.Hayashi	Accepted	2012-3-26
Haworthia venosa (Lam.) Haw.	Accepted	2012-3-26
Haworthia venosa subsp. granulata (Marloth) M.B.Bayer	Accepted	2012-3-26
Haworthia venosa subsp. tessellata (Haw.) M.B.Bayer	Accepted	2012-3-26
Haworthia venosa subsp. woolleyi (Poelln.) Halda	Accepted	2012-3-26
Haworthia villosa M.Hayashi	Accepted	2012-3-26
Haworthia vincentii Breuer	Accepted	2012-3-26
Haworthia violacea M.Hayashi	Accepted	2012-3-26
Haworthia viscosa (L.) Haw.	Accepted	2012-3-26
Haworthia vlokii M.B.Bayer	Accepted	2012-3-26
Haworthia wittebergensis W.F.Barker	Accepted	2012-3-26
Haworthia x Tauteae Archib.	Accepted	2012-4-18
Haworthia zantneriana Poelln.	Accepted	2012-3-26
Haworthia zantneriana var. minor M.B.Bayer	Accepted	2012-3-26
Haworthia zenigata M.Hayashi	Accepted	2012-3-26

生長環境

原生地的生態環境：非洲東部在臨近沙漠的半乾旱地區，有一層相當繁茂的灌木常常形成密集灌木叢，與十二卷植物結合在一起，由於受到印度洋潮濕氣流的影響，它們正好處在熱帶輻合帶，因此能接受較多的降雨量，使這類植被較為繁茂，特殊的氣候加速了岩石的風化，從而使土壤中鈣質的含量增高，土壤多呈淺褐色且富含腐熟的肥力，為植物提供了必要的生長元素。冬季即每年的6～7月，溫和雨季，平均溫度在15℃左右，是這類植物的生長季節，夏季氣候溫暖而於燥，為每年12月至次年1月，平均氣溫為26。C，植株會進入休眠階段。實際上，在熱帶和亞熱帶地區很多的植物種類都有休眠的特徵，它們休眠的主要原因是因為乾旱所致。

十二卷屬植物是屬於多肉植物里比較特殊的一類，因為原生地受印度洋暖濕氣流的影響，生長環境草木繁盛，這類小型的肉質植物生長在草叢的覆蓋下，每天有3～4h的光照就能長期生長旺盛，在強烈的光照環境下，葉片很快會被灼傷，生長溫度適宜在12～28℃，高於或低於此溫度都會進入休眠。十二卷屬的植物大部分都有粗大的肉質根系，內儲滿水分，使得植株在乾旱的季節里維持生命狀態。

栽培方法

養好十二卷注意三個條件：

1、深盆：因它們是深根系。

2、遮陽：忌強光充足散光最佳。

3、透氣：土質疏鬆透氣，3.1，根據本地資源配製;3.2，視植體大小定顆粒大小，顆粒多於泥碳;3.3，純 顆粒配製加入泥碳顆粒或營養顆粒。