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Plants of the Limestone Barrens

Plants of the Limestone Barrens. A Presentation by John Maunder Curator Emeritus of Natural History The Rooms Provincial Museum of Newfoundland and Labrador The Limestone Barrens Habitat Stewardship Program Conservation and Sustainable Ecotourism Conference Plum Point, Newfoundland

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Plants of the Limestone Barrens

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  1. Plants of the Limestone Barrens A Presentation by John Maunder Curator Emeritus of Natural History The Rooms Provincial Museum of Newfoundland and Labrador The Limestone Barrens Habitat Stewardship Program Conservation and Sustainable Ecotourism Conference Plum Point, Newfoundland October 12-13, 2006

  2. Plants? … What plants? … Cape Norman

  3. At first glance, there’s almost nothing there! Burnt Cape [photo: Pat Montegue]

  4. But, when you begin to look more closely … Watt’s Point

  5. … usually MUCH more closely…. Watt’s Point

  6. Flowers Cove You’ll see an amazing garden of botanical treasures!

  7. Redtipped Lousewort - Pedicularis flammea – Big Brook Some quite spectacular …

  8. Glacier Sedge – Carex glacialis – Boat Harbour Others pretty dull …

  9. But, what’s all the fuss about? Alpine Ragwort - Packera pauciflora – L’Anse aux Meadows

  10. Dwarf Hawk’s Beard – Crepis nana – Burnt Cape What makes these plants so special?

  11. Aren’t they just like plants from other places?

  12. Common Dandelion – Taraxacum officinale – Raleigh Well … some are …

  13. Northern Anemone - Anemone parviflora – Burnt Cape But most aren’t …It’s all a bit complicated

  14. Our limestone barrens species fall into about 5 special categories … … grouped by their general distribution near Eddies Cove West

  15. 1. Newfoundland Endemic “Limestone-Loving” Species Species found only in Newfoundland, in the whole world!

  16. Barrens Willow – Salix jejuna – Cape Norman

  17. Fernald’s Braya – Braya fernaldii – Big Brook and Watt’s Point

  18. Long’s Braya – Braya longii Sandy Cove and Yankee Point

  19. … and, MAYBE? “Burnt Cape Cinquefoil” -Potentilla usticapensis … [orPotentilla pulchella var. pulchella] … There are varying taxonomic interpretations … so its endemic status is uncertain Burnt Cape

  20. 2. Gulf of St. Lawrence Endemic “Limestone-Loving” Species Species found only in the Gulf of St. Lawrence region (which includes the Newfoundland west coast and Strait of Belle Isle), in the whole world!

  21. St. Lawrence Primrose – Primula laurentiana – Raleigh

  22. Newfoundland Pussytoes – Antennaria eucosma Cape St. George

  23. Longleaf Arnica – Arnica lonchophylla – Humber Gorge

  24. 3. Disjunct “Limestone-Loving” Species Species found both in some far-away place, AND in our area, with a BIG GAP in between.

  25. Dwarf Hawk’s Beard – Crepis nana – Burnt Cape …. Disjunct to N tip of Labrador, and arctic and western North America

  26. Newfoundland Orchid – Pseudorchis albida subsp. straminea Burnt Cape - Disjunct to Greenland and one locality in Hudson Bay

  27. Woolly Arnica – Arnica angustifolia subsp. tomentosa – Point Riche Peninsula … Disjunct to mountains of northwestern North America [photo: Rene Charest]

  28. Pendantpod Oxytrope - Oxytropis deflexa var. foliosa – disjunct [from S Labrador] to N tip of Labrador, Gaspe, Hudson Bay, and low arctic and western North America

  29. Bodin’s Milkvetch – Astragalus bodinii – Cook’s Harbour … disjunct to western North America

  30. 4. More Widespread “Limestone-Loving” Species

  31. Calypso Orchid - Calypso bulbosa var. americana – Burnt Cape

  32. Yellow Ladyslipper – Cypripedium parviflorum var. pubescens – Port au Choix

  33. Small Roundleaf Orchis - Amerorchis rotundifolia – Burnt Cape

  34. Frog Orchid – Dactylorhiza viridis Killdevil Mountain [photo: M. Anions] and Burnt Cape

  35. Purple Mountain Saxifrage – Saxifraga oppositifolia – Table Mountain

  36. Tufted Saxifrage - Saxifraga cespitosa – Old Port au Choix

  37. Island Gentian – Gentianopsis nesophila – St. John Bay

  38. Alpine Chickweed – Cerastium alpinum subsp. lanatum – Lower Cove

  39. White Mountain Avens – Dryas integrifolia Sandy Cove [photo: N. Djan-Chekar] and Flowers Cove [photo: Pat Montague]

  40. Yellow Mountain Saxifrage – Saxifraga aizoides – Eddies Cove West

  41. Alpine Bearberry - Arctous alpina – L’Anse-au-Loup

  42. Newfoundland Oxytrope – Oxytropis campestris var. minor – Mount Parent, P.Q.

  43. Elegant Milkvetch - Astragalus eucosmus – L’Anse aux Meadows

  44. Hairy Willow - Salix vestita – Port au Choix

  45. 5. Widespread Species which are not “Limestone Loving” They’ll grow almost anywhere!

  46. Larch – Larix laricina – Big Brook

  47. White Spruce – Picea glauca – Table Head [photo: Pat Montague]

  48. Living on the limestone barrens can be quite a challenge!

  49. How do the plants manage it? Trailing Juniper - Juniperus horizontalis – Port au Choix [photo: Pat Montague]

  50. What conditions do they have to overcome? Alpine Pussytoes – Antennaria alpina subsp. canescens – Watt’s Point

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