A botanical crossword

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Across
  1. 3. Leaf stalk (7)
  2. 7. A plant that completes its lifecycle in one growing season (6)
  3. 9. Large brown algae (4)
  4. 12. A popular garden plant from the Three Kings Islands. All plants today descend from a single individual (10,8)
  5. 15. Tallest moss in the world (scientific name) (8,7)
  6. 19. Species of speargrass/Aciphylla that grows around the Wellington coast (scientific name) (9)
  7. 21. Leptinella _____ a threatened species with a population near Titahi Bay (4)
  8. 24. Genus of distinctive introduced orange fungus (scientific name) (12)
  9. 26. Sophora species that only grows around Cook Strait (scientific name) (7)
  10. 27. The perching lily genus Collospermum has now been transferred to this genus (7)
  11. 28. Word that means obtaining native plants from local areas (11)
  12. 29. The most speciose genus of New Zealand shrubs (8)
  13. 31. Mass of pollen grains in an orchid (8)
Down
  1. 1. Number of southern beech species in New Zealand (4)
  2. 2. Tree whose wood was used by Māori for fishing floats (4)
  3. 4. A plant that grows on another plant (but which is not parasitic) (8)
  4. 5. New Zealand tree whose wood was used by early settlers to make butter boxes for export (9)
  5. 6. Small shrub similar in appearance to24 Down but distinguished by its hair-like stipules (scientific name) (8,6)
  6. 8. Species that mimics horopito (Pseudowintera colorata) (scientific name) (10, 7)
  7. 10. One of the only two NZ species in the Proteaceae (common name) (8)
  8. 11. NZ plant genus that once killed an elephant (scientific name) (8)
  9. 13. Floating native fern (6,5)
  10. 14. Genus of NZ’s only indigenous fully parasitic plant (scientific name) (12)
  11. 16. Small flowered Veronica tree with knobbly trunk found at Te Kopahou reserve (10)
  12. 17. Moisture-loving tree with buttress roots (common name) (7)
  13. 18. Seed coat (5)
  14. 20. Māori name of the plant also known as wild Irishman (9)
  15. 22. Early NZ botanist who was also a missionary and printer (7)
  16. 23. Māori name for Muehlenbeckia astonii (8)
  17. 24. Stalk that holds up an anther (8)
  18. 25. nationality of Carl Linnaeus, the father of taxonomy (7)
  19. 30. Hook grasses (Uncinia) have recently been transferred to this genus (5)