Figure above:

Marble relief of Athenian production, dating to the I century A.D., now in the National Museum (Museo Nazionale Romano, Palazzo Massimo), Rome.
The image represents the Hesperides, Nymphs to whom was entrusted the custody of the garden where the tree of the golden apples stood. The tree had been given by the Mother Earth, Gaia, to Hera as a gift at her marriage with Zeus. The Hesperides, according to Hesiod, were daughters of the Night and took their name from Hesperus, the Evening Star. They stood at the outmost limits of the world, towards the West. It seems not casual the relationship between the place in which the Nymphs lived, in the direction of the sunset, and the world of the dead, since both were associated with a particular moment of the vital cycle and were regarded as contiguous with fertility and regeneration. The apples, indeed, were fruits associated with fecundity, in particular the quince, whose fruit is full of seeds, that was called, because of its color, krysómelon, “the golden apple” (Pliny, Natural History, XV, 37).


[Source: http://greek-go.dot5hosting.com/ancient-greek-gods/nymphs/nymphs-statues.php]

Figure below:

Marble relief from Bithynia (in modern Turkey), dating to the I century B.C. and now in the National Museums (Staatliche Museen), Berlin, Germany. It shows a Nymph and a Satyr near a stele with an Ithyphallic Hermes. In classic mythology, the Nymphs were regarded as female divinities inhabiting every part of the natural domain. In particular, the Nymphs of the trees were called Dryads or Hamadryads. The former took their name from the oaks and incarnated their vegetative strength, but were not a single thing with them, characteristic that distinguished the Hamadryads, who were born and died with the trees, with which they made a single whole.

[Source: http://library.artstor.org/library/]