About Dennis: I've been looking at his userpic keywords, which are all names of trees, and I did some Googling for tree symbolism to see what would turn up as a translation. I pulled from three different sources (none of which are what I would call reputable, but they were top hits on Google) and got disparate answers. Links are provided in the first set of answers; the order of sources remains consistent throughout.
birch - meekness, grace; new beginnings, cleansing of past, vision quests; and growth, renewal, stability, initiation, adaptability. rowan - Tree of Life, prudence; [no entry]; power, vision, balance, healing, mystery, connection, protection, divination, transformation ash - grandeur; sacrifice, sensitivity and higher awareness; growth, expansion, and higher perspective. alder - [no entry]; [no entry]; giving and nurturing. willow - forsaken love; magic, healing, inner vision, dreams; imagination, psychic ability, flexibility. hawthorn - contentment, hope; [no entry]; balance and duality, contradictions. oak - hospitality, endurance and triumph; strength and courage, conjugal fidelity and fulfillment; life, strength, wisdom, nobility, family, loyalty, power, longevity, heritage, honor. holly - [no entry]; protection, overcoming of anger, spiritual warrior; style, dignity and honor even in the midst of great challenge, protection. hazel - [no entry]; hidden wisdom, dousing, divination; knowledge. vine - [no entry]; [no entry]; regeneration, continuation, opportunity, connection, expansion, fertility, bounty. ivy - [no entry]; [no entry]; growth, renewal, connection, friendship, opportunity. reed - [no entry]; [no entry]; purpose, protection, purification, clarification, communication. elder - compassion, zealousness, sorrow, death; birth and death, fairy realm; death, cycles, rebirth, renewal, creativity, regeneration, transformation.
no subject
birch - meekness, grace; new beginnings, cleansing of past, vision quests; and growth, renewal, stability, initiation, adaptability.
rowan - Tree of Life, prudence; [no entry]; power, vision, balance, healing, mystery, connection, protection, divination, transformation
ash - grandeur; sacrifice, sensitivity and higher awareness; growth, expansion, and higher perspective.
alder - [no entry]; [no entry]; giving and nurturing.
willow - forsaken love; magic, healing, inner vision, dreams; imagination, psychic ability, flexibility.
hawthorn - contentment, hope; [no entry]; balance and duality, contradictions.
oak - hospitality, endurance and triumph; strength and courage, conjugal fidelity and fulfillment; life, strength, wisdom, nobility, family, loyalty, power, longevity, heritage, honor.
holly - [no entry]; protection, overcoming of anger, spiritual warrior; style, dignity and honor even in the midst of great challenge, protection.
hazel - [no entry]; hidden wisdom, dousing, divination; knowledge.
vine - [no entry]; [no entry]; regeneration, continuation, opportunity, connection, expansion, fertility, bounty.
ivy - [no entry]; [no entry]; growth, renewal, connection, friendship, opportunity.
reed - [no entry]; [no entry]; purpose, protection, purification, clarification, communication.
elder - compassion, zealousness, sorrow, death; birth and death, fairy realm; death, cycles, rebirth, renewal, creativity, regeneration, transformation.