374 GLOSSARY 



Nutlets, small nut-like fruits, 274. 



Obcordate, reversed heart-shaped, p. 189. 



Obcuneate, reversed wedge-shaped, p. 274. 



Obdeltoid, reversed triangular, p. 189. 



Ob-diplostemonous, diplostemonous, but arranged out of the normal 



regularly alternating order. 

 Oblique plane, any plane between the median and lateral planes in a 



lateral flower, p. 123. 



Oblong, somewhat longer than oval and the sides more parallel. 

 Obsolete, all but vanished. 

 Oosphere, the as yet unfertilised egg-cell. 

 Organ, any part with definite functions. 

 Organography, description of the organs, p. 58. 

 Orthotropous, straight : the axis of the ovule not curved. 

 Ovary, the box-like enclosure of the ovules formed by the closed carpels, 



p. 65. 



Ovate, egg-shaped in outline. 

 Ovules, the incipient seeds borne on the carpels. 

 Ovuliferous scale, the scale which bears the ovule. 

 Palmate, divided like a hand, p. 238. 

 Palmatifld, divided into lobes like the hand, p. 225. 

 Panicle, a raceme of racemes, p. 28. 



Papilionaceous, a particular order of flower often resembling a butterfly. 

 Pappus, the hairy calyx of the Compositae. 

 Papyraceous, paper-like, p. 205. 



Parasitic, gaining its food-materials from other living organisms. 

 Parietal, on the walls of the ovary. 

 Pectinate, comb-like, p. 197. 

 Pedicel, a lateral stalklet bearing one flower, p. 9. 

 PediceUate, on a little stalk, p. 206. 

 Peduncle, a stalk bearing flowers, p. 9. 

 Pedunculate, with a definite stalk, p. 350. 



Peltate, a shield-like body with the stalk or handle in the middle, p. 135. 

 Pendulous, suspended from or near the top of the ovary. 

 Pentacyclic, of five whorls or cycles. 

 Pentandrous, with five stamens, &c. 

 Perfect, of a flower having all the floral parts, p. 55. 

 Perianth, a floral envelope not strictly determinable into either calyx 



or corolla, p. 129. 



Periderm, the corky part of the cortex, p. 195. 



Perigone, the name sometimes given to the perianth of a ? flower. 

 Perigyny, with the stamen and petals inserted on the calyx or open 



calyx-tube, p. 59. 



