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11. PSIDIUM  Linnaeus, Sp. Pl.  1: 470. 1753; Gen. Pl. ed. 5, 211.  1754.  
 [I]
[Ancient Greek name psidion for Punica, alluding to supposed resemblance]  
 
Leslie R. Landrum
 
 
 
 
Shrubs or trees, glabrous or pubescent, hairs simple. Leaves sometimes drought deciduous, opposite; blade venation usually brochidodromous. Inflorescences 1- or 3-flowered, axillary, solitary flowers or dichasia; bracteoles caducous. Flowers usually 5-merous, sessile or pedicellate; hypanthium obconic; calyx lobes distinct or connate beyond summit of ovary to form calyx tube, sometimes forming calyptra (in closed flower bud, calyptra completely closed or open only as a terminal pore, tearing regularly into 5 lobes or irregularly); petals whitish; stamens [100–]280–720; ovary [2- or]3–6-locular; placenta bilamelate, often protruding as a peltate structure; ovules 12–180 per locule, biseriate or multiseriate. Fruits berries, green, yellow, or red, pyriform, globose, or subglobose. Seeds few–100+; seed coat dull, bony, densely woody, ca. 9–30 cells thick at narrowest point, covered with thin layer of pulpy tissue when wet, or glaze or crusty tissue when dry; embryo curved; cotyledons usually reflexed, linear to elliptic, shorter than hypocotyl. 
Species ca. 70 (2 in the flora): introduced, Florida; Mexico, West Indies, Central America, South America (except Chile). 
 
 
 
 
 
 
 
 
                        
                         
		
                          
                          
			
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  Leaf blades glabrous, obovate, oblanceolate, or elliptic, lateral veins 8–13 pairs (weak to obscure); floral buds each usually with a terminal pore, apex rounded | 
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  1 Psidium cattleyanum | 
 
  | + | 
  Leaf blades appressed-pubescent abaxially, elliptic, elliptic-oblanceolate, elliptic-obovate, lanceolate, or oblong, lateral veins 9–22 pairs (prominent); floral buds each without terminal pore, apex usually conic | 
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  2 Psidium guajava | 
 
 
 
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Lower Taxa 
 
  
                        
                          
                        
	
                        
                      
 
                      
	 
                      
                         
		
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