外胚乳

Perisperm The nutritive tissue in the seeds of many Caryophyllaceae.It is a diploid tissue derived from the nucellus rather than the embryosac.

外胚乳：存在于多数石竹科植物的种子中的营养组织，二倍性，来源于珠心而不是胚囊。

Seed vertical, brown, of same shape as utricle; embryo semi-annular; radicle inferior; perisperm scant.

垂直的种子，棕色，相同形状于胞果；胚半环形；胚根下位。外胚乳不够。

Firstly, it is found that there are many obvious differences between Acorus and Araceae. Their differences are based on many aspects which include characteristics of morphology, anatomy and epidermis of leaf, types of tapetum in anther walls , patterns of endothecial thickenings, and ways of development of endosperms, presence or absence of perisperm, components of photochemistry, and sequences of rbcL.

研究表明：1。菖蒲属与天南星科其它属在叶的形态、结构、表面特征，花药绒毡层类型，药室内壁增厚的特点，胚乳的发育方式，外胚乳的有无，植物化学成分，rbcL基因序列等多方面存在着显著的差异。

Seeds mostly arillate; endosperm little, perisperm abundant; embryo small; cotyledons 2, fleshy.

种子多数有假种皮；内胚乳较少，外胚乳丰富；胚小；子叶2，肉质。

Seeds 1 to numerous, reniform, ovoid, or rarely dorsiventrally compressed, abaxially grooved, blunt, or sharply pointed, rarely fimbriate-pectinate; testa granular, striate or tuberculate, rarely smooth or spongy; embryo strongly curved and surrounding perisperm or straight but eccentric; perisperm mealy.

种子1 至多数，肾形，卵球形，或者很少背腹扁平，背面有槽，钝，或者明显尖，很少流苏状栉状；种皮颗粒状，具条纹或者具瘤，很少光滑或者海绵状胚显著弯曲，围绕外胚乳或者直而偏心；外胚乳粉状。

Seed horizontal, lenticular; testa leathery, lustrous; embryo annular; perisperm farinaceous.

种子水平，透镜状；种皮似皮革，有光泽；胚环状；外胚乳谷粉制。

Seeds with copious starchy perisperm and a minute embryo embedded in small endosperm.

种子具大量的粉质外胚乳和一小胚嵌入在小的胚乳里。

Seeds with embryo curved around a hard, starchy perisperm.

种子的胚弯曲环绕着坚硬的具有淀粉的外胚乳。

Embryo spiral; perisperm separated into two parts by embryo, or perisperm absent.

胚螺旋形；外胚乳通过缺席胎儿或者外胚乳分成两个部分。

Seed vertical; embryo horseshoe-shaped; radicle inferior; perisperm copious.

种子垂直胚马蹄形；胚根下位。外胚乳丰富。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。