File:Casasia clusiifolia (seven year apple) (San Salvador Island, Bahamas) 2 (15141331583).jpg

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Casasia clusiifolia (Jacquin, 1797) - seven year apple in the Bahamas.

Plants are multicellular, photosynthesizing eucaryotes. Most species occupy terrestrial environments, but they also occur in freshwater and saltwater aquatic environments. The oldest known land plants in the fossil record are Ordovician to Silurian. Land plant body fossils are known in Silurian sedimentary rocks - they are small and simple plants (e.g., Cooksonia). Fossil root traces in paleosol horizons are known in the Ordovician. During the Devonian, the first trees and forests appeared. Earth's initial forestation event occurred during the Middle to Late Paleozoic. Earth's continents have been partly to mostly covered with forests ever since the Late Devonian. Occasional mass extinction events temporarily removed much of Earth's plant ecosystems - this occurred at the Permian-Triassic boundary (251 million years ago) and the Cretaceous-Tertiary boundary (65 million years ago).

The most conspicuous group of living plants is the angiosperms, the flowering plants. They first unambiguously appeared in the fossil record during the Cretaceous. They quickly dominated Earth's terrestrial ecosystems, and have dominated ever since. This domination was due to the evolutionary success of flowers, which are structures that greatly aid angiosperm reproduction.

The seven year apple is a shrub-like tree that occurs along marine shorelines in Florida and in the Caribbean. Such environments are prone to drought and saltwater spray, especially during storms. Casasia clusiifolia is quite tolerant of such conditions. The leaves are distinctive in being elongated, glossy, relatively thick, and being laterally curled downward. The “apple” fruits are slightly elongated, subspherical structures. The fruits change color as they ripen over a year, from greenish to yellowish to brownish to blackish.

Classification: Plantae, Angiospermophyta, Rubiales, Rubiaceae

Locality: North Point Peninsula, northeastern San Salvador Island, eastern Bahamas


More info. at:

<a href="https://edis.ifas.ufl.edu/fp110" rel="nofollow">edis.ifas.ufl.edu/fp110</a>
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Source Casasia clusiifolia (seven year apple) (San Salvador Island, Bahamas) 2
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15141331583 (archive). It was reviewed on 12 November 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

12 November 2019

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Date/TimeThumbnailDimensionsUserComment
current04:21, 12 November 2019Thumbnail for version as of 04:21, 12 November 20194,288 × 2,848 (2.6 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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