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Libocedrus jacksonii
Taxonomy
Libocedrus jacksonii was named by Hill and Carpenter (1989). It is not extant. It is considered to be a form taxon. Its type specimen is LRRI-880, a leaf. Its type locality is Little Rapid River 2, which is in an Oligocene lacustrine mudstone/sandstone in Australia.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1989 | Libocedrus jacksonii Hill and Carpenter pp. 95-97 figs. 3C, D, 4A, B |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Libocedrus jacksonii Hill and Carpenter 1989
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill and R. J. Carpenter 1989 | Branches flattened, with opposite pairs of lateral and facial leaves. Facial leaves up to 1 mm long, length:width ratio slightly greater than 1, the free portion with convex margins, slightly keeled, apex bluntly acute. Lateral leaves not fused to facial leaves, with a strongly developed margin, up to 2 mm long and uo to 1 mm wide, about equal projection with facial leaves. Lateral leaf margin well developed, convex, or concave at the midpoint, and convex at the apex, apex bluntly acute. Stomatal distribution unknown. External stomatal opening with a pronounced Florin ring with a high ridge, up to six lobes, and with a peripheral groove. Well developed circular papillae common between stomata. Inner surface of stoma typically cupressaceous, indentations fot papillae not conspicuous. |