Mocora / Bussu Palm

Overview

Manicaria saccifera — known locally as mocora, and in English as the bussu palm — is the architectural plant of Tortuguero’s yolillal swamp forests. Its leaves are among the largest of any palm: up to 8 metres long, pinnately veined, with blades reaching 2.3 metres wide. From a canal boat, the effect is of a low green wall rising directly from the water — a dense curtain of enormous paddle-shaped fronds that closes off the canal edges in mature stands.

The genus name refers to the extraordinary spathe (flower sheath), which dries into a rigid sack-like structure — the source of both the Latin epithet and the common name “monkey cap palm” in some regions. The seeds are buoyant and germinate after floating considerable distances, a dispersal strategy called hydrocory that is well suited to the flood-prone swamp system.

Why Tortuguero

The yolillal — the swamp palm community dominated by Manicaria saccifera and Raphia taedigera — is one of the defining ecosystems of Tortuguero National Park and one of the most extensive remaining examples of this habitat type in Central America. It covers broad zones of the park interior, particularly in the lower-lying areas between the canal network and the beach. This is saturated, poorly-drained swamp — ground you cannot walk on without sinking — and it is precisely this inaccessibility that has allowed such large stands to persist.

Traditional communities across the Caribbean coast used the dried leaves for thatching, considering them among the most durable natural roofing materials available. In the Tortuguero area, that use is now largely historical, replaced by corrugated metal, though the knowledge remains with older residents.

How to see them (honestly)

• Effort required: none if you are on a canal tour. Mocora fronds form the dominant visual texture of the canal banks in many sections of the park interior.
• Best view: slow-boat secondary-channel tours, where you pass within arm’s reach of the fronds. In the dry season, with lower water levels, you can sometimes see the short trunk at the base of the frond cluster.
• What to look for: distinguish from the similar Raphia taedigera (jícaro) by leaf texture — Manicaria fronds have a distinct ribbed, obovate form with crenate-margined leaflets rather than the cleanly pinnate Raphia leaflets. Both are dominant at Tortuguero; knowing which is which takes a guided eye.
• Flowering: the unusual sack-like spathe is visible when the palm flowers, typically at irregular intervals. It is distinctive enough that even a casual visitor will notice it if present.

Status note

Least Concern, with a wide range across the Caribbean lowlands. The principal threat is wetland drainage for banana and oil-palm agriculture, which has eliminated yolillal habitat across much of its historical range in Central America. Tortuguero’s park boundary has so far protected the largest remaining Costa Rican stands.