''Thrinax excelsa'', commonly known as broad thatch, is a species of

palm Palm most commonly refers to: * Palm of the hand, the central region of the front of the hand * Palm plants, of family Arecaceae ** List of Arecaceae genera * Several other plants known as "palm" Palm or Palms may also refer to: Music * Palm (b ...

which is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

Jamaica Jamaica (; ) is an island country situated in the Caribbean Sea. Spanning in area, it is the third-largest island of the Greater Antilles and the Caribbean (after Cuba and Hispaniola). Jamaica lies about south of Cuba, and west of Hispan ...

Description

''Thrinax excelsa'' is a

fan palm Fan palm as a descriptive term can refer to any of several different kinds of palms ( Arecaceae) in various genera with leaves that are palmately lobed (rather than pinnately compound). Most are members of the subfamily Coryphoideae, though a fe ...

with solitary stems that range from tall and in diameter. Plants have between 6 and 17

palmate The following is a list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular ...

ly compound leaves with 52 to 65 leaflets. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed ...

s are arched and are not longer than the leaves. The

bisexual flowers Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction. Among all living organisms, flowers, which are the reproductive st ...

are small. The fruit are small, single-seeded,

globose A sphere () is a geometrical object that is a three-dimensional analogue to a two-dimensional circle. A sphere is the set of points that are all at the same distance from a given point in three-dimensional space.. That given point is the ...

and white when mature.

Distribution

The species is endemic to Jamaica, which it grows between

above sea level Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as '' orthometric heights''. The ...

in the

John Crow Mountains The John Crow Mountains are a range of mountains in Jamaica. They extend parallel with the northeast coast of the island, bounded to the west by the banks of the Rio Grande, and joining with the eastern end of the Blue Mountains in the southeast. ...

References

excelsa Endemic flora of Jamaica Trees of Jamaica Plants described in 1853 {{tree-stub