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Caesalpinia claibornensis

Taxonomy
Caesalpinia claibornensis was named by Herendeen and Dilcher (1991). Its type locality is Warman Clay Pit, which is in an Eocene/Eocene terrestrial horizon in the Claiborne Formation of Tennessee.

Synonymy list
YearName and author
1991Caesalpinia claibornensis Herendeen and Dilcher

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RankNameAuthor
genusCaesalpiniaL
RankNameAuthor
speciesclaibornensis

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.

Diagnosis
ReferenceDiagnosis
P. S. Herendeen and D. L. Dilcher 1991Fruits are 5.1-8.1 cm long (x=6.9 cm), 1.2-2.1 cm wide (x=1.7 cm, excluding the wing) and have a continuous vascularized wing along the placental suture that is 3.5-9 mm wide (x=4.7 mm, max. width). The wing is usually wider at the fruit center than at the ends. The fruits are thin and membranous. The fruit base is acute to obtuse, the apex is blunt and rounded or occasionally mucronate with a persistent style base (ca. 1 mm long). The fruits are short stipitate (ca. 2 mm) and contain three to seven ovules. The fruit valve venation consists of numerous, closely spaced primary veins that arise from the placental and nonplacental sutures at 90 degrees angles. These veins divide and anastomose to form a fine reticulum. The wing venation consists of a poorly organized storied looping pattern in which veins arise from the placental suture, divide several times, and return toward the suture. The valve venation is often better preserved than is the wing venation.