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Two New Brazilian Species of Oryctina (Loranthaceae) with a Revised Key to the Genus

Job Kuijt
Novon
Vol. 10, No. 4 (Winter, 2000), pp. 391-397
DOI: 10.2307/3392993
Stable URL: http://www.jstor.org/stable/3392993
Page Count: 7
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Two New Brazilian Species of Oryctina (Loranthaceae) with a Revised Key to the Genus
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Abstract

Two new species from central Brazil of the South American genus Oryctina (Loranthaceae) are described and illustrated, O. eubrachioides Kuijt and O. quadrangularis Kuijt. The absence of a calyculus in the male flower of several Oryctina species represents a nearly unique feature within the family, and the lack of staminodia in the female flower has elsewhere been noted only in two species of Cladocolea. The affinities of Brazilian species with Venezuelan ones are briefly discussed. Distinctions between the two groups of species, based largely on the structure of bracteoles and staminodia, suggest that the generic name Maracanthus may have to be revived for the Venezuelan species. A new key to the genus is presented, including the new species.

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