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TWO PRINCIPLES INVOLVED 117 



f With an enclosing involucre, at least before maturity (l). 

 { Without an enclosing involucre (d).* 

 Vertically divisible in one-seeded parts (i). 

 A one-seeded part resulting from such division (j). 

 Transversely divisible into one-seeded joints (n). 

 Not divisible into one-seeded parts nor the product of such 



division (k).^ 

 Not transversely dehiscent (/). 

 Transversely dehiscent (g). 

 Monocarpellary (m). 



Dicarpellary, the valves separating from the placentae (o). 

 Not monocarpellary nor dicarpellary, with valves separating 

 from placentae (2^). 

 r Soft throughout . Berry. 



i With a soft, tough rind Hesperidium. 



L With a hardened rind . Pepo. 



Putamen of bony hardness; solitary Drupe. 



Putamen of bony hardness; one of several which are 



coherent .... . . Pyrene. 



Putamen of bony hardness; one of many which are 



non-coherent Drupelet. 



Putamen thin and tough . . Pome: 



Schizocarpi 

 (If dicarpellary, with a carpophore . Cremocarp).S 



Part of a cremocarp . Mericarp^ 



Not part of a cremocarp . .Coccus, Nucula, or Nutlet. 



Dehiscent, the valves separating from the two 



placentae ... . . Most Silicles. 



With thin, winged pericarp . . Samara. 



With inflated pericarp Utricle. 



Pericarp, thickish in view of its size, not inflated, 



sometimes winged Akene. 



A non-glumaceous involucre, with contents Glans. 



A one-seeded fruit from a glans . . Nut. 



A glumaceous involucre with contents A few Spikelets. 



A one-seeded fruit from a spikelet . Caryopsis. 



(- Dehiscing by one suture only Follicle. 



J Dehiscing by both ventral and dorsal sutures Legume. 



L (When spirally coiled . Cochlea). 



* Exceptions occur. 



