the surface of the pot. It should be placed in the warmest 

 part of the stove, and its roots in particular freely syringed. 

 The soil should be turfy peat, kept open with broken bricks 

 or pots, to allow a free passage for the water. Water must 

 be given more freely at certain seasons than at others ; but it 

 does not require such a long period of rest as Catasetums 

 and plants of that kind, and therefore may be kept almost 

 continually growing. 



It is multiplied by division, the front shoots making the 

 best plants. 



So little is correctly known concerning the native habits 

 of the great order of Orchidaceous epiphytes, that I gladly 

 avail myself of a vacant space to give the following localities 

 of some other Oncidiums, as stated by M. Descourtilz in 



his MSS. 



Oncidium ciliatum. Flowers in September, in low woods, sur- 

 rounding the table-land (plateaux) of the neighbourhood 

 of Bananal. 



Oncidium iridifolium. Found in Brazil, exclusively on 

 branches of the Orange and Lemon, flowering in April. 

 The fruit is large, and has six large transparent wings. 

 Very common in the province of St. Paul's, about the 

 town of Bom Jesus de Bananal, choosing in preference drj/ 

 places exposed to the sun. 



Oncidium jmbes. Thin forests, surrounding the table-land 

 near Bom Jesus de Bananal, flowering in the month of 

 May. 



Oncidium divaricatum. Trunks of the highest trees, in 

 elevated mountains of the Serra das Argoas in the district 

 of Ilha Grande, flowering in February. 



