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Sori borne on the basal segments of the pinnules, indusium cylindrical, mouth hardly dilated and lobed; receptacle protruding, curved, dark brown.
孢子囊群生於小羽片的基部裂片上;囊群盖筒状,口部几不扩大和分裂;囊群托长而突出,弯曲,黑褐色。
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Leaves tufted; stipes stout, up to 1.2 m long, densely covered with golden brown hairs at base; lamina up to 2 m long and 1 m wide, tripinnatifid; pinnae alternate, sparsely spaced; pinnules linear-lanceolate, to 15 cm long and 1-2.5 cm wide, short-stipitate; ultimate lobes linear, more or less falcate, shallowly serrate, dark green and shining above, light green to glaucous below.
叶簇生;叶柄粗壮,长可达1.2米,基部亦密被金黄褐色毛;叶片长可达2米,宽达1米,三回羽状分裂;羽片互生,疏离;小羽片线状披针形,长达15厘米,宽1-2.5厘米,具短柄;末回裂片线形,略呈镰状,边缘有浅锯齿,上面深绿色,有光泽,下面灰白色。
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Leaves crowded near apex of the trunk, spirally arranged; stipes dark brown, with sharp spines; lamina large, oblong, tripinnate; pinnae 17-20 pairs, alternate, longest one to 60 cm long, the basal one reduced; rachis short-spiny; pinnules 18-20 pairs, sessile or nearly so, lanceolate, to 10 cm long and 2.5 cm wide, divided almost to the costa; segments more or less falcate, toothed.
叶螺旋状排列,聚生於茎端;叶柄棕色,具锐刺;叶片大,长矩圆形,三回羽状深裂;羽片17-20对,互生,最大的长达60厘米,基部一对缩短,羽轴有短刺;小羽片18-20对,无柄或近於无柄,披针形,长达10厘米,宽2.5厘米,深裂几达中脉;末回裂片多少镰状,有齿。
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Leaves tufted; stipes 3-10 cm long, glabrous, narrowly winged near apex; lamina oblong-ovate to triangular, generally 10-12 cm long, bi- or tripinnate; pinnae 3-5 pairs, oblong-ovate, sessile; rachis narrowly winged; pinnules pinnately dissected, segments linear.
叶簇生;叶柄长3-10毫米,无毛,近顶端有狭翅;叶片长卵圆形至三角形,通常长10-12厘米,二回或三回羽状分裂;羽片3-5对,互生或近对生,长卵圆形,无柄,羽轴有狭翅;小羽片羽状细裂;末回裂片细长,线形。
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According to previous studies, false veins can roughly divide into two major types:(1) recurrent vein: form by fusion of leaflets, for instance, false veins of Angiopteris;(2) false veinlet: form by reduced veinlets, for instance, false veins of Hymenophyllaceae.
从过去的研究中,大致可将假脉分为两大类型(1)回脉:由相邻小羽片之边缘互相愈合而成,例如观音座莲属之假脉;(2)假支脉:由支脉退化而成,例如膜蕨科之假脉。
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Any of the ultimate leaflets of a bipinnately compound leaf.
小羽片,二回羽片二回羽片结构的一种根本小叶
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The pinnate division of a pinna in a bipinnately compound leaf, or the ultimate divisions of a leaf which is more than twice pinnately compound.
小羽片 Pinnule 二回或二回以上羽状复叶的末级羽片。
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In contrast, P. obliquum has lamina with basal pinnae contracted, scales of petiole brown adaxially, scales of rachis up to 2.3×0.5 mm, pinnae green, chartaceous, matt adaxially, and serrulate on margin, and microscales 0.2-0.5×0.1-0.2 mm.
obliquum相似,但吞天井耳蕨的叶片基部最宽,向基部不缩短,叶柄鳞片近轴面深棕色,叶轴鳞片达3.6×0.8mm,羽片深绿色,近革质,向轴面有光泽,边缘具略波状微齿或近全缘,小鳞片达2×0.5mm;而斜羽耳蕨的叶片的基部缩短,叶柄鳞片向轴面棕色,叶轴鳞片达2.3×0.5mm,羽片绿色,草质,向轴面无光泽,边缘有锯齿,小鳞片达0.5-0.8×0.2-0.3mm。
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Stem leaves petiolate, petioles ca. 10 cm; sheaths broadly ovate, 2.5–4 cm, purple-red adaxially, densely white-setose abaxially; blades triangular-oblong, 10–15 × 5–7 cm, 3-pinnate; pinnae 5–7 pairs, only basal pinnae short-petiolulate; ultimate segments obovate or oblanceolate, 3–5 × 2–3 mm, setose along nerves abaxially, entire or 2–3 toothed, cuspidate at apex.
茎生叶具叶柄,叶柄约厘米;鞘宽卵形,正面2.5 -4厘米,紫红色,密被白色具刚毛;叶片三角形的长圆形, 10-15 * 5-7 厘米,3回羽状;羽片5-7 对,只是基本的羽片短的小叶柄;末回裂片倒卵形或倒披针形, 3-5 * 2-3 毫米,具刚毛沿着叶脉背面,全缘或齿状,骤尖在先端。
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A leaflet or primary division of a pinnately compound leaf.
复叶的羽片羽状复叶的小叶子或羽片部分
- 更多网络解释与小羽片相关的网络解释 [注:此内容来源于网络,仅供参考]
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pinna:羽片
在二回羽状复叶中的小叶称羽片(pinna). 以此类推,可以有三回至多回羽状复叶,最末一次的羽片称小羽片(pinnule). 有的羽状复叶的小叶大小不一、参差不齐或大小相间,则称为参差羽状复叶,如番茄、龙芽草等.
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fertile pinna:能育羽片
02.123 小羽片 pinnule | 02.124 能育羽片 fertile pinna | 02.125 能育小羽片 fertile pinnule
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pinnula:小羽片
pinnatifid 羽状半裂的 | pinnula 小羽片 | pinnulate 具小羽片的
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pinnule:小羽片
以此类推,可以有三回至多回羽状复叶,最末一次的羽片称小羽片(pinnule). 有的羽状复叶的小叶大小不一、参差不齐或大小相间,则称为参差羽状复叶,如番茄、龙芽草等. 掌状复叶(palmately compound leaf) 在复叶上缺乏叶轴,
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intercalated pinnule:间小羽片
frond 蕨叶 | intercalated pinnule 间小羽片 | fertile pinna 实羽片
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fertile pinnule:能育小羽片
02.124 能育羽片 fertile pinna | 02.125 能育小羽片 fertile pinnule | 02.126 营养羽片 foliage pinna
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fertile pinnule:可孕性小羽片
"可孕性羽片;产孢子羽片","fertile pinna" | "可孕性小羽片","fertile pinnule" | "可孕性植物","fertile plants"
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sterile pinnule:不育小羽片
02.127 不育羽片 sterile pinna | 02.128 不育小羽片 sterile pinnule | 02.129 间小羽片 intercalated pinnule
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sterile pinnule:裸小羽片
护颖 sterile lemma;empty glume | 裸羽片 sterile pinna | 裸小羽片 sterile pinnule
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pinnulate:具小羽片的
pinnoite 柱硼镁石 | pinnulate 具小羽片的 | pinnule 小羽片