Some plants of the genus Impatiens; specifically, the touch-me-not balsam or yellow balsam (Impatiens noli-tangere).
The squirting cucumber (Ecballium elaterium).
Any of various plants with fruits or seed capsules that, when ripe, burst open and discharge their seeds when touched, or with leaves that fold and droop when touched.
Someone (such as a disagreeable person) or something (such as a painful experience or taboo topic) to be avoided or not interfered with.
A warning to avoid or not to interfere.
A picture depicting Jesus appearing to Mary Magdalene shortly after his resurrection from the dead (see the etymology).
The plant Nardostachys jatamansi (syn. Nardostachys grandiflora).
A perfumed ointment, extracted from the plant Nardostachys jatamansi that belongs to the Valerian family and grows in the Himalayas.
Lavandula stoechas, another species used in antiquity to produce an aromatic oil.
Any plant of the genus Aralia of the Araliaceae family.
False spikenard (Maianthemum racemosum, syn. Smilacina racemosa)
Ploughman's spikenard (Inula conyza, now Pentanema conyzae).
Wild spikenard (Asarum europaeum).