EXPLANATION OK PLATE XVI. 



rifj. "i lir;inili witli nialiiiU! closfil <iiiu\s (October of secoiid seuson); /', iiiatiiiv cone; c. cuiin scalr, oiitci' or 

 (lorHal vii!W showing ai>(>iilijsis; il, ventral view of the same with heeil in phieo; c, seed ilotaelied fruiii wiii^'; /, seed 

 with wing intact; <j, leaf forms, two and throo leafed bundles. 

 9G 



