討論:倒卵葉冬青
山羊百科,林文智老師的植物、山岳、攝影紀錄
点叶冬青系 Ser. 1. Stigmatophorae (Loes.) S. Y. Hu
Key 2 (Ilex sect. Paltoria (Ruiz & Pavon) Maximowicz)
1 Leaf blade abaxially punctate; pyrenes 4, 3-5 mm in diam., abaxially usually smooth, striate, not sulcate (2)
2 (1) Branchlets usually zigzag; male cymes 1-3-flowered, rarely more flowered; pedicels equaling or slightly longer than peduncles; rudimentary ovary pyramidal. 金平氏冬青 Ilex triflora var. kanehirai 38 I. triflora
Branchlets straight; male cymes 1-7-flowered, more than 1-flowered cymes with pedicels shorter than peduncles; rudimentary ovary subglobose or conical (3)
3 Flowers 4-merous; leaf blade usually obovate or elliptic, rarely obovate-elliptic or oblong-elliptic, 0.5-7 × 0.4-3 cm; male cymes fasciculate on current year’s branchlets or solitary (4)
4 Leaf blade obovate, elliptic, obovate-elliptic, or oblong-elliptic, 1-7 × 0.5-3 cm, petiole usually longer than 4 mm (6)
6 (4) Leaf blade 1-3.5 × 0.5-1.5 cm; fruiting pedicel 4-6 mm; persistent stigma thickly discoid; pyrenes oblong-ellipsoidal, abaxially smooth, striate, not sulcate. 假黃楊 Ilex crenata 42 I. crenata
Leaf blade 2-7 × 1-3 cm; fruiting pedicel longer than 7 mm; pyrenes abaxially convex, striate, and slightly rugose or smooth and 5-striate (7)
7 (6) Petioles 4-6 mm, lateral veins evident on both surfaces of leaves; fruit 9-11 mm in diam., persistent stigma discoid-mammilliform; pyrenes ellipsoidal, abaxially convex, striate, and slightly rugose. 43 I. viridis
7 Petioles 5-10 mm, lateral veins indistinct on both surfaces of leaves; fruit 7-8 mm in diam., persistent stigma thinly discoid; pyrenes ovoid-ellipsoidal, abaxially smooth, 5-striate. 倒卵葉冬青 Ilex maximowicziana 44 I. maximowicziana
- 倒卵叶冬青 Ilex maximowicziana Loes.
常綠小喬木,高2.5-3米,胸徑約4釐米;當年生幼枝近四角形,具縱棱及槽,黃綠色,被微柔毛,較老的枝灰褐色,圓柱形具縱脊,被毛,皮孔不明顯,具突起的葉痕。葉生於1-3年生枝上,革質,倒卵形,橢圓形或闊橢圓形,長2-6釐米,寬1-2.5釐米,先端鈍或急尖,稀圓形,基部急尖或楔形,邊緣具細圓齒狀鋸齒,葉面綠色,具光澤,除沿主脈被微柔毛外,余無毛,背面淡綠色,無毛,具褐色腺點,主脈在葉面凹陷,在背面隆起,側脈4-6對,略可見或兩面不明顯;葉柄長7-10毫米,上面具淺槽,略被微柔毛,頂端具葉片下延的狹翅;托葉微小,線狀鑽形。
- 雄花序:1-5個聚傘花序簇生於當年生枝的葉腋內,每一聚傘花序具2-3花或單花,花序梗長5-11毫米,頂端具苞片2枚,花梗長1.5-2毫米,均被微柔毛,花梗基部具卵形小苞片2枚;花萼盤狀,4深裂,裂片闊卵圓形,長、寬均約1.5毫米,先端鈍圓;花冠輻狀,白色,花瓣4,卵圓形,長約3毫米,寬約2毫米,基部稍合生;雄蕊短於花瓣,花藥長圓形;退化子房近球形,頂端鈍或具小喙。雌花不詳。果球形,直徑7-8毫米,單生於當年生枝的葉腋內,果梗長8-12毫米,自基部向頂端逐漸增粗,具縱棱,被微柔毛,中部具鑽狀小苞片2枚;宿存花萼伸展,四角形,直徑約4毫米,4深裂,裂片近圓卵形,邊緣稍齧蝕狀;宿存柱頭薄盤狀,小,直徑約2毫米。分核4,卵狀橢圓形,長約5毫米,背部寬約4毫米,平滑,背部具5條稍微凸起的縱條紋,無溝,無皺紋,內果皮革質。花期4月,果期8-11月。
產於我國臺灣(屏東、台東);生於山地常綠闊葉林內。分佈於日本琉球群島。模式標本采自琉球群島 (Ishigaki) 。 本種與亮葉冬青Ilex viridis Champ. ex Benth.極近,惟後者的葉柄較短,長為葉片長度的1/13至1/6,側脈在葉兩面明顯,分核背部具稍隆起的皺紋。而本種的葉柄較長,為葉片長度的1/3或1/4,側脈兩面不明顯,分核背面具5條稍微突起的縱條紋,而無皺紋。
点叶冬青系 Ser. 1. Stigmatophorae (Loes.) S. Y. Hu
- 三花冬青 Ilex triflora Bl.
Ilex triflora Bl. Bijdr. 1150. 1826 常绿灌木或乔木,高2-10米;幼枝近四棱形,稀近圆形,具纵棱及沟,密被短柔毛,具稍凸起的半圆形叶痕,皮孔无。叶生于1-3年生的枝上,叶片近革质,椭圆形,长圆形或卵状椭圆形,长2.5-10厘米,宽1.5-4厘米,先端急尖至渐尖,渐尖头长3-4毫米,基部圆形或钝,边缘具近波状线齿,叶面深绿色,干时呈褐色或橄榄绿色,幼时被微柔毛,后变无毛或近无毛,背面具腺点,疏被短柔毛,主脉在叶面凹陷,背面隆起,两面沿脉毛较密,侧脉7-10对,两面略明显或不明显,网状脉两面不明显;叶柄长3-5毫米,密被短柔毛,具叶片下延而成的狭翅。
- 雄花1-3朵排成聚伞花序, 1-5聚伞花序簇生于当年生或二三年生枝的叶腋内,花序梗长约2毫米,花梗长2-3毫米,两者均被短柔毛,基部或近中部具小苞片1-2枚;花4基数,白色或淡红色;花萼盘状,直径约3毫米,被微柔毛,4深裂,裂片近圆形,具缘毛;花冠直径约5毫米,花瓣阔卵形,基部稍合生;雄蕊短于花瓣,花药椭圆形,黄色;退化子房金字塔形,顶端具短喙,分裂。雌花1-5朵簇生于当年生或二年生枝的叶腋内,总花梗几无,花梗粗壮,长4-8(-14)毫米,被微柔毛,中部或近中部具2枚卵形小苞片;花萼同雄花;花瓣阔卵形至近圆形,基部稍合生;退化雄蕊长约为花瓣的1/3,不育花药心状箭形;子房卵球形,直径约1.5毫米,柱头厚盘状,4浅裂;果球形,直径6-7毫米,成熟后黑色;果梗长13-18毫米,被微柔毛或近无毛;宿存花萼伸展,直径约4毫米,具疏缘毛;宿存柱头厚盘状;分核4,卵状椭圆形,长约6毫米,背部宽约4毫米,平滑,背部具3条纹,无沟,内果皮革质。花期5-7月,果期8-11月。