Here on the dry sandbank, beside the path that runs obliquely8 across the moor9, I see half a dozen harebell-worts in the first, or caterpillar10, stage of their existence. The metaphor11 is less violent by far than you would at first imagine, for in its earlier days the harebell, like the caterpillar, does nothing but eat and lay by for the future; while in its second or flowering stage it does nothing but put forth12 its tender blue blossoms, which answer to the butterfly both in their attractive beauty and in the fact that they serve to produce the seeds (which are the analogues13 of eggs) for the coming generation. In the purely14 preparatory, or hard-eating, stage, the harebell has no stem or branches to speak of; it consists of a rosette of large orb-like leaves, often heart-shaped towards the stalk, and pressed close to the ground in a spreading circle. Each such rosette springs in April from a buried rootstock, which, in loose loamy soil, like that of these Surrey moors15, is often intricate; it burrows16 in and out with strange instinct among the dry sand and stones, in search of such rare moisture as it can manage to find for itself. But though water is scarce, access to light and air is easy; so the large round leaves, lying close on the bare ground, get sunshine in abundance, and feed to their hearts’ content upon their proper food—the carbon in the atmosphere—while vegetation around is still low and backward. In this stage they may be compared to the rosettes of London-pride, which are similarly clustered, but which do not die down as the flower-stem advances.
About June, however, the harebell plant has eaten and drunk enough to venture upon leaving its caterpillar stage behind, and sending up the loose cluster of waving blue flowers which represent its butterfly. In order to do this, and overtop the tall grasses which have sprouted17 meanwhile, it withdraws the whole of the living green-stuff from its heart-shaped root-leaves, and uses up the active material they contain in building its flower-stem. Thus, as the stem lengthens19, and the buds begin to swell20, the lower leaves die away altogether; only a few quite dissimilar and very narrow blades on the ascending21 branches now represent the original foliage22. After the flowers have set, even these last disappear, or dry up on the stem, their living material being withdrawn23 in turn to supply food for the developing seeds. This may seem odd at first, but it is a common incident in many life-histories of plants and animals. As a rule, indeed, the butterfly or winged stage of most insect lives is wholly devoted24 to a marriage flight; and there are several winged insects which never feed at all in the perfect state; they use themselves up in the formation of eggs, and then die of inanition.
Most of the sister campanulas, like Canterbury bells, are stiff and coarse and hairy plants, without grace or elegance25; but that is because they haunt woods and copses, or overgrown hedgerows, where they are sheltered from the wind, and enabled to grow large and rampant26. The harebell, on the contrary—the oread of its race—is a denizen27 of the open, wind-swept uplands; it loves the moors and heaths, the bare hilly pastures; and it has learnt in consequence to bend lightly before the breeze, springing up again as those invisible feet pass on, which gives it its familiar slenderness and elegance. The hanging domes28 of the flowers are entered from below by bumble-bees, which are strong enough to push aside the fringed and close-set teeth that edge the base of the stamens, put there on purpose to baffle less useful honey-thieving visitors. Equally strange is the egg-shaped capsule which, later on, contains the seeds; it opens by five short clefts29 near the top. The actual reason for this arrangement is itself a somewhat odd one. The seeds can only drop out through the pores or clefts when a high wind blows and sways the waving stem violently. At such times the little grains get carried by the breeze to considerable distances; and this serves not only to disseminate30 the kind, but also to carry the majority of the seeds to unoccupied spots, where rotation31 of crops can thus be secured by letting the young plants sprout18 at a distance from the soil exhausted32 by their mother. Similar devices for securing rotation are common in nature; they often occur in species like this, whose seeds seem at first sight wholly unprovided with wings, or floats, or other means of locomotion33.
点击收听单词发音
1 graceful | |
adj.优美的,优雅的;得体的 | |
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2 momentary | |
adj.片刻的,瞬息的;短暂的 | |
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3 attained | |
(通常经过努力)实现( attain的过去式和过去分词 ); 达到; 获得; 达到(某年龄、水平、状况) | |
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4 adolescence | |
n.青春期,青少年 | |
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5 epoch | |
n.(新)时代;历元 | |
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6 scattered | |
adj.分散的,稀疏的;散步的;疏疏落落的 | |
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7 drooping | |
adj. 下垂的,无力的 动词droop的现在分词 | |
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8 obliquely | |
adv.斜; 倾斜; 间接; 不光明正大 | |
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9 moor | |
n.荒野,沼泽;vt.(使)停泊;vi.停泊 | |
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10 caterpillar | |
n.毛虫,蝴蝶的幼虫 | |
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11 metaphor | |
n.隐喻,暗喻 | |
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12 forth | |
adv.向前;向外,往外 | |
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13 analogues | |
相似物( analogue的名词复数 ); 类似物; 类比; 同源词 | |
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14 purely | |
adv.纯粹地,完全地 | |
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15 moors | |
v.停泊,系泊(船只)( moor的第三人称单数 ) | |
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16 burrows | |
n.地洞( burrow的名词复数 )v.挖掘(洞穴),挖洞( burrow的第三人称单数 );翻寻 | |
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17 sprouted | |
v.发芽( sprout的过去式和过去分词 );抽芽;出现;(使)涌现出 | |
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18 sprout | |
n.芽,萌芽;vt.使发芽,摘去芽;vi.长芽,抽条 | |
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19 lengthens | |
(时间或空间)延长,伸长( lengthen的第三人称单数 ) | |
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20 swell | |
vi.膨胀,肿胀;增长,增强 | |
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21 ascending | |
adj.上升的,向上的 | |
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22 foliage | |
n.叶子,树叶,簇叶 | |
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23 withdrawn | |
vt.收回;使退出;vi.撤退,退出 | |
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24 devoted | |
adj.忠诚的,忠实的,热心的,献身于...的 | |
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25 elegance | |
n.优雅;优美,雅致;精致,巧妙 | |
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26 rampant | |
adj.(植物)蔓生的;狂暴的,无约束的 | |
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27 denizen | |
n.居民,外籍居民 | |
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28 domes | |
n.圆屋顶( dome的名词复数 );像圆屋顶一样的东西;圆顶体育场 | |
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29 clefts | |
n.裂缝( cleft的名词复数 );裂口;cleave的过去式和过去分词;进退维谷 | |
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30 disseminate | |
v.散布;传播 | |
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31 rotation | |
n.旋转;循环,轮流 | |
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32 exhausted | |
adj.极其疲惫的,精疲力尽的 | |
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33 locomotion | |
n.运动,移动 | |
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