74 SHADE IN COFFEE CULTURE. 



tributed, closing as soon as the sunshine disappears, which permits ventilation and 

 the deposition of dew. A distance of 10 meters apart is also suggested by Sanchez. 



Plantain. (See Musa.) 



Pois doux (French Antilles). (See Inga dxdcis., 



Pois doux (Guadeloupe). (See Inga laurina.) 



Pois mascate. (See Mucuna utilis.) 



Pomarosa (Spanish America). (See Jamhosa jambos.) 



Pomme-rose (French Islands). (See Jamhosa jamhos.) 



Pongamia glabra. 



Synonym. — Galedupa metadata. 



Common name. — Balicbalic (Philippine Islands); Madrecacao (Philippine 

 Islands). 

 Blanco does not state that this tree is planted for shade. Possibly it may have 

 been called madrecacao because of its similarity to Gliricidia maculata {Galedupa 

 pungam). 



Poon sikat (Banda). (See Alhizzia moluccana.) 



Pito. 



Mentioned by Yorba among the principal trees planted for coffee shade in Mexico. 



Podocarpus. 



A genus of coniferous trees with species native in the mountains of the American 

 tropics, the Pacific islands, and the Malay region. Experiments made by Professor 

 Nobbe (Die Landwirtschaftlichen Yersuchsstationen, 51, 1898-99, p. 241) show that 

 at least one of these, P. chinensis, is able to assimilate nitrogen by the aid of a 

 symbiotic filamentous fungus affecting the roots. It is accordingly not impossible 

 that this genus is worthy of attention in connection with coffee culture, particularly 

 in regions where it is native. 



Poplar. 



According to the quotation given on page 18, a "poplar tree" is used for coffee 

 shade in Arabia. Later writers have not referred to it. 



Poro bianco. 



Mentioned in a special bulletin on "Coffee in America," published by the Bureau 

 oj the American Republics, as a quick-growing tree planted for coffee shade in 

 Costa Rica. 



Ptero carpus marsupium. 



Common name. — Honne (Coorg, India) . 

 A leguminous forest tree left standing for shade in coffee plantations. (Cameron. ) 



Quelita (Nicaragua). (See Jatrqpha multifida.) 



Rain tree. (See Pithecolohium soman.) 



Rammon. (See Trojphis americana.) 



Red Cedar (British India). (See Cedrela toona.) 



Regen boom (Dutch Colonies). (See Pithecolohium saman.) 



Rice. (See Oryza satlva.) 





