Across
- 1. Tropical, subtropical, temperate, sea level to 13,000 feet
- 4. Mountainous with steady rainfall
- 6. Sandy plains, rich upland, central to east America Maine to Florida
- 7. Dry ridges to peat bogs and swamps
- 11. Temperate areas of Northern Hemisphere
- 12. Limestone soils, deep loams, loess soil, fertile alluvial deposits
- 13. Woodland shade, grassy or peaty, moss and lichen
- 15. Upland groves, well drained soil in valleys
- 18. North America, typically near streams
- 19. Frigid soils with 40-50 inches of annual rain, snow to 15 feet
- 20. Lower well drained loam, Great Lakes to Eastern USA
Down
- 2. Southern Mexico, Central America and South America to Brazil and Bolivia
- 3. India, Sri Lanka, Myanmar, Thailand, Laos (SE Asia) 500m to 5000m of rain per year
- 5. Eastern North America from Southern Canada to Florida and Texas
- 8. Northern US and Canada to Alaska, Scattered spots in the Rockies
- 9. Cool mountainous areas, repopulates after fire strikes
- 10. Upland sand and loams, No. Dakota to Texas
- 14. Western USA, Himalayas and Mediterranean
- 16. Western Asia, Europe to the Caspian Sea/ Balkans
- 17. A narrow stretch of Pacific Coast, So. Oregon to California