ERICA'S NOTEBOOK
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Orchids (There is only one orchid so I don't think it needs its own page)

Picture

Erica's Original Notes
​
Orchids are found from the tropics to the sub‑arctic and are the most developed of flowers, belonging to the class of parallel veining, to which the lily, onion and banana also belong. These plants are marvellous examples of sexual engineering ('orchis' means 'testicle'). The orchid was thought to be an aphrodisiac because of its shape (Doctrine of Signatures). It has adapted to attract pollinators by colour, odour and mimicry.


There are several types of orchids, including:
  • subterranean, found in Australia;
  • lithophytes, growing on rocks;
  • terrestrial, with underground roots;
  • saprophytes, living on decaying material;
  • epiphytes, with aerial roots for absorbing moisture. Epiphytes that live in an area with a dry season develop a hardened root tip covered with velamen (a layer of air-containing cells) which protects and insulates, absorbing moisture but preventing it from evaporating.

Orchid seeds are like dust and need a symbiotic fungus for growth.

Pseudo-bulb is the name given to the swollen stem for storage.

Propagation is by meristematic tissue in culture fluid (undifferentiated tissue from growth buds).

Corsages are made from the cattlea orchid because these have firm petals.

There are perhaps 40 species, subspecies and varieties of orchids in B.C., including Goodyera oblongifolia (rattlesnake orchid); G.repens (plantain orchid); Epipactis gigantea (stream orchid, giant helleborine) found at Radium Hot Springs; Cypripedium calceolus (yellow moccasin orchid); C.montanum; C.passerinum; Calypso bulbosa.

Tillandsia ursinioides (Spanish moss) is a bromeliad and not an orchid.

Updates 2013 (Gardener Walk Notes)
Cypripedium japonicum var. formosanum, found in the Sino-Himalayan Garden, does not require associated mycorrhiza for survival. There used to be other Cypripedium in the Boreal Forest area, but they have disappeared. Theft of these plants is a problem.  

Useful Links:
All about Orchids
Native Orchids of BC



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Photo used under Creative Commons from Superior National Forest
  • Home
  • Updates
    • What's New
    • Curator Updates
    • Garden Stories >
      • Garden Story Index
    • Self-Guided Tours
    • Walks & Talks >
      • Walks and Talks 2022
      • Walks -Talks 2021 & Zoom Tips
    • PDFs of Updates, Tours, & Talks >
      • Self-guided Tours (PDF)
      • Gardener Walks (PDF)
  • Plant IDs
    • ID By Flower Color >
      • Red Flowers
      • Pink Flowers
      • Orange Flowers
      • Yellow Flowers
      • Green Flowers
      • Blue Flowers
      • Purple Flowers
      • White Flowers
    • ID By Type >
      • Annuals
      • Berries-Fruits-Nuts
      • Bulbs, Corms, Rhizomes, Tubers >
        • Bulbs
        • Corms
        • Rhizomes
        • Tubers
      • Ferns
      • Grasses
      • Medicinal Plants
      • Native Plants
      • Perennials >
        • Peonies
        • Salvias
      • Rhododendrons >
        • Rhodendron Erica Notes
      • Shrubs >
        • Calycanthus
        • Hydrangeas >
          • Hydrangea Background
        • Peonies >
          • Peonies-Overview
        • Rhododendrons
        • Roses >
          • Rose Background
      • Trees >
        • Conifers >
          • Cypress
          • Firs
          • Pines
        • Deciduous Trees >
          • Dogwoods
          • Ginkgos
          • Magnolias
          • Witch Hazels
        • Native Trees
        • Tree of the Month
  • In the Garden
    • Map and Collection Lists
    • Art in the Garden >
      • Symposium & Exhibitions
    • Building and Grounds >
      • Bridges
      • Formal Rose Garden Hardscape and Art
      • Grotto Area & Black Garden
      • Korean Pavilion
      • Maze
    • Gardener Assignments
    • Collections >
      • Ash Collection
      • Camellia Collection
      • Rhododendron Walk
    • Gardens >
      • Gardens A-D >
        • Alma VanDusen Garden
        • Backyard Bird Garden
        • Bentall Garden
        • Black Garden
        • Canadian Heritage Garden >
          • Bees
          • Canadian Heritage Orchard
        • Cascadia Garden
        • Cherry Grove
        • Chilean Garden
      • Gardens E-H >
        • Eastern North America Garden
        • Fern Dell
        • Formal Rose Garden
        • Fragrance Garden
        • Heather Garden
        • Herb Garden
        • Heritage Rose Garden
      • Gardens I-P >
        • Laburnum Walk
        • Livingstone Lake
        • Meconopsis Dell
        • Meditation Garden
        • Mediterranean Garden
        • Ornamental Grasses
        • Perennial Garden
      • Gardens R-Z >
        • Rhododendron Walk
        • Sino-Himayalan Region
        • South African Garden
        • Southern Hemisphere
        • Stone Garden
        • Vegetable Garden
        • Woodland Garden
    • Garden History >
      • History photos
  • Science
    • Animals & Insects >
      • Birds
      • Butterflies and Moths
      • Insect Friends
      • Small Creatures
    • Buds
    • Colour and Vision
    • Dynamic Symmetry - Fibonacci Spirals
    • Flowers
    • Fruit
    • Germination
    • Habitats and Environments
    • Hormones
    • Leaves
    • Life on Earth
    • Light, Energy, and Rainbows
    • Plant Calendars
    • Pollination
    • Pollen
    • Roots
    • Scents
    • Seeds
    • Soil
    • Stems
    • Vascular Plants
    • Web of Interdependence
    • Weeds
  • Bloedel
  • Search
  • About
    • ERICA, ERICA'S TREE (and a short history of Guiding) - June 14, 2018
  • Contact