Paper Flower Meaning

Example: Used other than as an idiom: see paper,‎ flower.
  He was wearing a red paper flower in his lapel.
A plant, Bougainvillea glabra, and its flower head, so called for the papery bracts.
2000, IKA SALEHI MOHAMMAD; M TAGHIZADEH, “HERBACEOUS HOST RANGE OF UME WITCHES" BROOM PHYTOPLASMA IN IRAN”, Iranian Journal of Plant Pathology:
  prosopis (syrian mesquite), sugarbeet, camelthorn, pigweed, potato, hemp, physalis, pepper, chrysanthemum, sesame, marigold, paper-flower, Mirabilis , carrot ...
2002, WJ Steyn; SJE Wand, DM Holcroft, G Jacobs, “Anthocyanins in vegetative tissues: a proposed unified function in photoprotection”, New Phytologist:
  Families within the order Centrospermae, including taxa like prickly pear (Opuntia sp.) and paper flower (Bougainvillea sp.), display transient red coloration
2002, R Schoellhorn; E Alvarez, Warm climate production guidelines for bougainvillea:
  Introduction / Common Name: Bougainvillea, Paper Flower / Scientific Name: Bougainvillea glabra / Family: Nyctaginaceae
A plant, the peach-leaved bellflower, Campanula persicifolia, and its flower.
1826, Thomas Hood, “The Winter Nosegay”, in Whims and oddities: in prose and verse, with forty original designs‎, page 67:
  There is my Quaker Aunt, A Paper-Flower, — with a formal border / No breeze could e'er disorder, — Pouting at that old beau—the Winter Cherry, / A pucker'd berry; / And Box, like a tough-liv'd annuitant
A plant, Psilostrophe cooperi, and its flower.
1990, TMC Robert; CP Szpak, RJ Deslippe, “Experimental assessment of factors affecting the distribution of adult female tree lizards”, Oikos:
  Between sites, small shrubs (zinnia, Zinnia pumila; paper flower, Psilostrophe cooperi) predominate.