| Common Name | Scientific Name | Code |
| n/a | Cnemidaria sessilifolia (Jenman) Domin [excluded] | CNSE |
| n/a | Cyathea ponapeana (Hosok.) Glassman | CYPO11 |
| n/a | Nephelea pubescens (Kunth) R. Tryon [excluded] | NEPU7 |
| n/a | Nephelea R. Tryon | NEPHE3 |
| n/a | Trichipteris C. Presl | TRICH29 |
| n/a | Trichipteris pubescens (Baker) R. Tryon [excluded] | TRPU19 |
| alsophila | Alsophila R. Br. | ALSOP |
| Alsophila amintae | Alsophila dryopteroides (Maxon) R. Tryon | ALDR3 |
| Alsophila amintae | Cyathea dryopteroides Maxon | CYDR2 |
| Alsophila brooksii | Cyathea brooksii Maxon | CYBR7 |
| Alsophila bryophila | Cyathea bryophila (R. Tryon) Proctor | CYBR10 |
| Alsophila bryophila | Cyathea pubescens sensu Maxon, non Mett. ex Kuhn | CYPU14 |
| Alsophila portoricensis | Cyathea portoricensis Spreng. ex Kuhn | CYPO6 |
| Alsophila portoricensis | Nephelea portoricensis (Spreng. ex Kuhn) R. Tryon | NEPO2 |
| birdwing treefern | Cyathea borinquena (Maxon) Domin | CYBO3 |
| Brooks's alsophila | Alsophila brooksii (Maxon) R. Tryon | ALBR3 |
| cnemidaria | Cnemidaria K. Presl | CNEMI |
| Cnemidaria horrida | Cyathea horrida (L.) Sm. | CYHO10 |
| Cnemidaria horrida | Hemitelia horrida (L.) R. Br. ex Spreng. | HEHO4 |
| Cnemidaria sessilifolia | Cyathea sessilifolia Jenman [excluded] | CYSE14 |
| Cooper's cyathea | Cyathea cooperi (Hook. ex F. Muell.) Domin | CYCO18 |
| creeping treefern | Cyathea armata (Sw.) Domin | CYAR13 |
| Cyathea andina | Cyathea escuquensis (Karst.) Domin | CYES2 |
| Cyathea andina | Hemitelia escuquensis Karst. | HEES |
| Cyathea borinquena | Alsophila boringuena Maxon | ALBO2 |
| Cyathea borinquena | Trichipteris borinquena (Maxon) R. Tryon | TRBO4 |
| Cyathea cooperi | Sphaeropteris cooperi (Hook. ex F. Muell.) R. Tryon | SPCO18 |
| Cyathea parvula | Alsophila aquilina Christ | ALAQ2 |
| Cyathea parvula | Cyathea aquilina (Christ) Domin | CYAQ |
| Cyathea pungens | Alsophila procera (Willd.) Desv. | ALPR4 |
| Cyathea pungens | Trichipteris procera (Willd.) R. Tryon | TRPR6 |
| Cyathea tenera | Cyathea brittoniana Maxon | CYBR9 |
| deepwoods fern | Cnemidaria horrida (L.) K. Presl | CNHO |
| forest alsophila | Alsophila amintae Conant | ALAM5 |
| helecho gigante | Cyathea tenera (J. Sm. ex Hook.) T. Moore | CYTE10 |
| helecho gigante de la sierra | Alsophila bryophila R. Tryon | ALBR4 |
| Jamaican treefern | Cyathea furfuracea Baker | CYFU |
| parrotfeather treefern | Cyathea andina (Karst.) Domin | CYAN |
| Puerto Rico alsophila | Alsophila portoricensis (Spreng. ex Kuhn) Conant | ALPO7 |
| rough tree fern | Cyathea australis (R.Br.) Domin | CYAU5 |
| small treefern | Cyathea parvula (Jenman) Domin | CYPA7 |
| spiny treefern | Cyathea pungens (Willd.) Domin | CYPU8 |
| treefern | Cyathea Sm. | CYATH |
| West Indian treefern | Cyathea arborea (L.) Sm. | CYAR |