MELASTOMACEiE. 



585 



have found its way into the Brazilian collection through some mis- 

 chance. Its aspect, indeed, is more like that of some Oriental or 

 Oceanic species; but I find no record that can apply to it in Dr. 

 Pickering's MS. notes of the insular collections. M. Naudin considers 

 the plant to be the type of a new genus, of his tribe Miconiales, if 

 truly American, to stand near Glidemia (from which it does not 

 widely differ in its floral characters) ; or to be appended to the subtribe 

 Dissochcetece, in case it should prove to be of Oceanic origin. The 

 name alludes to the congested and multibracteate or involucrate 

 inflorescence, which forms a striking character in the plant. 



Plate 73. — Pleiochiton crassifolia: a flowering branch, of the 

 natural size. Fig. 1. A general involucre, displayed. 2. Involucel 

 and the enclosed flower-bud. 3. An unopened flower. 4. Vertical 

 section of the same. 5. A petal. 6. Anterior, and 7, posterior view 

 of a stamen. 8. Pistil, detached. 9. Transverse section of a five- 

 celled, and 10, of a four-celled ovary. 11. An ovule. — The details 

 variously magnified. 



5. HENEIETTEA, DC. 

 1. Henriettea succosa, DC. 



Henriettea succosa, DC. Prodr. 3, p. 104 ; Naudin, in Ann. Sci. Nat. ser. 3, 18, p. 104. 

 H. Brasiliensis, Casaretto, Nov. Stirp. Bras. p. 85; Walp. Repert. 5, p. 716. 



Hab. Organ Mountains, near Rio Janeiro, Brazil. 

 6. LEANDRA, Eaddi. 



1. LEANDRA VILL08A, DC. 



Hab. Rio Janeiro, and in the Organ Mountains, Brazil. 

 2. Leandra? angustifolia, DC. 



Leandraf angustifolia, DC. Prodr. 3, p. 154; Naudin, 1. c. p 90. 



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