白花藏芥
白花藏芥 |
中文名:白花藏芥 學 名:Phaeonychlum albiflorum (T. Anderson) Jafri 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:罌粟目 科:十字花科 屬:藏芥屬 種:白花藏芥 |
白花藏芥(學名:Phaeonychlum albiflorum (T. Anderson) Jafri)是十字花科、藏芥屬植物。花莖高可達10厘米,具葉。花白色,幼果線形。 [1]
目錄
白花藏芥形態特徵
花草植株直立或近於直立,高10—30厘米,密被灰白色柔毛或有微小分枝毛及星狀毛。基生葉蓮座狀,倒披針形至匙狀長圓形,長4—10厘米,寬0.5—1.5厘米,通常全緣,帶肉質,上面灰綠色,下面灰白色,有少數平行脈,兩面被柔毛,有葉柄。
花草有多數花,密集於頂端,果期延伸長達20厘米;曹片近於直立,橢圓形,長3—4毫米,邊緣有狹膜質,背面有毛宿存;花瓣白色或淡紅色,基部及背面帶紫色,倒卵形,長7—8毫米,寬3—3.5毫米;短雄蕊長3—4毫米,長雄蕊長4—5毫米;子房條形而扁,密被星狀毛;花柱短,柱頭頭狀。
長角果條形而扁,長1.5—2厘米,寬約2毫米,帶扭曲,密被星狀毛;果瓣有1明顯的中脈,花柱極短,柱頭2淺裂,隔膜完全,無脈。種子5—7粒,卵形,長約1毫米,淺褐色。
花莖高3-10厘米,具葉。基生葉窄匙形或倒披針形,長1-2厘米,寬2-4毫米,全緣或有1-3圓齒;莖生葉線形或倒披針形,較小。
花白色,直徑5-6毫米。幼果線形,長約5毫米,密生微星毛。
Phaeonychlum albiflorum (T. Anderson) Jafri
Cheiranthus albiflorus T. Anderson; Christolea albiflora (T. Anderson) Jafri
花期6-7月。Cheiranthus albiflorus T. Anderson in J. D. Hooker, Fl. Brit. India 1: 133. 1872; Christolea albiflora (T. Anderson) Jafri; Ermania albiflora (T. Anderson) O. E. Schulz.
Plants 2-8 cm tall; caudex slender, few branched, usually without leaf remains of previous years. Trichomes short-stalked, dendritic or few forked, appressed. Stems erect, often simple from caudex, pubescent. Basal leaves rosulate; petiole 1-5 mm, not ciliate, slender; leaf blade oblanceolate or narrowly spatulate, 2-10(-17) × 1-4 mm, uniformly tomentose on both surfaces, base attenuate or cuneate, margin entire or distally 1-3-toothed, apex obtuse to subacute.
Cauline leaves similar to basal, smaller upward, narrowly oblanceolate or sublinear, middle and upper ones always entire. Racemes 8-15-flowered, basally bracteate. Pedicel slender, suberect or ascending, straight, 2-5 mm in flower, tomentose. Sepals 2-2.7 × 1-1.5 mm, sparsely pubescent, margin broadly membranous.
Petals white, fading lavender on claw, broadly spatulate, 6-8 × 3-4 mm, apex rounded; claw 3-4 mm. Filaments white, median pairs 2.7-3.5 mm, lateral pair 1.5-2 mm; anthers oblong, 0.5-0.6 mm. Immature fruit linear, densely tomentose; style ca. 0.5 mm; stigma capitate, entire. Seeds unknown.