David Stoughton Conant

Alsophila cuspidata, synonym Cyathea cuspidata, is a widespread species of tree fern native to Central and South America, where it grows in tropical rain forest up to the montane zone, as well as in open sites, on riverbanks and cleared pastureland at an altitude of 0–800 m. Its natural distribution covers Mexico, Guatemala, Belize, Honduras, El Salvador, Nicaragua, Costa Rica, Panama, Colombia, Ecuador, Peru, Bolivia, Paraguay, the Amazon Basin, Brazil and French Guiana. This species often has multiple trunks, which may be 15 m tall and about 10 cm in diameter. They are covered in black

Alsophila firma, commonly known as the maquique fern (Spanish: helecho maquique, Nahuatl languages: peshma), is a deciduous tree fern in the family Cyatheaceae endemic to Mexico, other countries of Central America, Colombia, and Ecuador. In the cloud forests of Mexico, it is considered an emblematic species and serves as a host for native epiphytic plants. However, habitat destruction and overconsumption of the trunks for handicraft production have threatened populations in Mexico. As a result, Alsophila firma is considered threatened in the state of Veracruz and has been given special

Alsophila balanocarpa, synonym Cyathea balanocarpa, is a species of tree fern native to Cuba, Jamaica and Hispaniola. Despite its wide distribution, little is known about this species. It is apparently of hybrid origin. In southeastern Cuba it hybridises with Alsophila woodwardioides to form the natural hybrid Alsophila × boytelii.

Alsophila woodwardioides is a species of tree fern native to Jamaica, Cuba and Hispaniola (the Dominican Republic).

Alsophila imrayana, synonym Cyathea imrayana, is a species of tree fern native to Dominica, Costa Rica, Panama, Venezuela, and Ecuador. The plant grows in submontane rain forest understorey and riparian zones on riverbanks, at an altitude of 1,000–2,000 metres (3,300–6,600 ft).

Alsophila grevilleana, synonym Cyathea grevilleana, is a species of tree fern endemic to Jamaica, where it grows in moist gullies and on wooded hills in both calcareous and noncalcareous soils at an altitude of 200–1200 m. The trunk of this plant is erect, about 7 m tall, and 10–15 cm in diameter. It is characteristically clothed in old stipe bases, brown scales and blackish spines. Fronds are tripinnate, dark green in colour, and up to 4 m in length. The last pinnae are sometimes separated, forming a distinctive clump around the trunk apex. The rachis is yellow-brown and almost smooth. This

Alsophila fulgens, synonym Cyathea fulgens, is a species of tree fern endemic to the Dominican Republic on the island of Hispaniola. It forms part of the complex centered on Alsophila woodwardioides comprising six very similar taxa from the Greater Antilles. The other five species are Alsophila jimeneziana (syn. Cyathea crassa), Alsophila grevilleana, Alsophila portoricensis and Alsophila tussacii. Large and Braggins (2004) note that this group is known to cross with members of the Alsophila minor complex. In the wild, A. fulgens also forms hybrids with Alsophila brooksii.

Alsophila erinacea, synonym Cyathea erinacea, is a species of tree fern native to Mexico, Costa Rica, Panama, Venezuela, Colombia, Ecuador, Peru and Bolivia. It grows in tropical rain forests, particularly in the understory, and on riverbanks up to the montane zone at an altitude of about 800–2,100 metres (2,600–6,900 ft).

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Alsophila sternbergii is a species of tree fern in the family Cyatheaceae.

Alsophila jimeneziana, synonym Cyathea crassa, is a species of tree fern endemic to the Dominican Republic. Little is known about this rare tree fern. A. jimeneziana is part of the Alsophila woodwardioides complex from the Greater Antilles, together with five other species: Alsophila fulgens, Alsophila grevilleana, Alsophila portoricensis, and Alsophila tussacii (all also placed in Cyathea). This species is not conspecific with Alsophila crassa Karsten, which is based on material collected from wet, cold, montane forest at Mérida by Franz Engel in 1859. The Checklist of Ferns and Lycophytes

Alsophila incana, synonym Cyathea incana, is a species of tree fern. It is native to Colombia, Ecuador, Peru, Bolivia, and northern Argentina. Very little is known about this plant.

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