147 
the woody regions of the Andes of Peru, between the tropic of Can- 
cer and the Equinoctial line, and from 9 to 11 degrees south, 
the vegetation of the Yallhoy is there perennial ; for though the 
nights are considerably cold, it never snows or freezes in those 
places, nor does the mercury or spirit of wine in Reaumur’s ther- 
mometer descend lower than five degrees above zero, and the 
greatest heat experienced at mid-day does not exceed twenty- 
four degrees of that thermometer. Be Se 
There are frequent rains from October to May ; but the plants 
obtain some sunshine, though for short and casual intervals, in 
almost all the cloudy and rainy days of the oS 
erage 
EXPLANATION OF THE PLATE. 
aa aia 
1. Flower with the carina erect, and the ale open. 2. Flower with the ale and carina 
expanded, shewing the stamens. Lateral view of the flower. 4. Calyx. 5. Calyx 
magnified. 6. Petal seen on its interior face. 7. The carina declining. 8. The carina 
erect. §. Appendix of the carina, with the stamens declined. 10. Appendix of the 
carina erect. 11. Stamen, 12. Stamen with the anther open. 13. Pistil. 14. Pistil 
magnified. 15. Drupe. 16, Nut. 17, Transverse section of the nut. 18, Kernel 
2 
