| central and south ameri… | 0.36 |
| arizona | 0.25 |
| texas | 0.25 |
| reproduce by spore | 0.75 |
| produce spore | 0.75 |
| grow tall | 0.64 |
| grow | 0.62 |
| look great | 0.61 |
| spread by rhizome | 0.61 |
| provide food | 0.60 |
| grow in area | 0.59 |
| grow in woodland | 0.57 |
| grow in moist areas | 0.53 |
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| root | 0.66 |
| frond | 0.59 |
| enzyme | 0.33 |
| true leaves | 0.30 |
| xylem | 0.30 |
| phloem | 0.30 |
| flower | 0.30 |
| anti-inflammatory | 0.16 |
| few brown leaves | 0.16 |
| moist soil | 0.59 |
| shade | 0.52 |
| little maintenance | 0.43 |
| high humidity | 0.41 |
| moist, shady spot | 0.38 |
| water | 0.36 |
| less water | 0.30 |
| pliantly | 0.25 |
| lots of shade and ambie… | 0.25 |
| frequent misting | 0.25 |
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| plant | 0.68 |
| vascular plants | 0.59 |
| ancient plants | 0.41 |
| aquatic plant | 0.36 |
| primitive form of plant… | 0.25 |
| the most common plant | 0.25 |
| planted | 0.61 |
| watered | 0.45 |
| propagated | 0.45 |
| used as houseplant | 0.42 |
| cooked | 0.41 |
| thought | 0.36 |
| easy to grow | 0.36 |
| kept moist | 0.33 |
| fed | 0.30 |
| forced to consider the … | 0.30 |
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