376 GLOSSARY 



Protandrous, where the anthers shed pollen before the stigma of the 



same flower is ready, jj. 159. 

 Proterogynous, where the stigma is mature before the anthers of the 



same flower, p. 159. 

 Prothallus, a tissue which nurses the embryo in certain Cryptogams. 

 Protoplasm, the living substance of the plant. 

 Protuberance, outgrowth; sec Hump, p. 51. 

 Pruinose, with a waxy bloom. 

 Pseudaxis, see Monochasium, p. 13. 

 Pubescent, softly hairy, p. 189. 

 Pulvinar, on the pulvinus, p. 301. 

 Punctate, dotted, p. 278. 

 Pyriform, pear-shaped, p. 318. 



Quincuncial sestivation, a particular ease of imbricate aestivation, p. 146. 

 Raceme, an indeflnite, mouopodial and acropetal inflorescence, with 



pedicels of equal length along the peduncle. 

 Racemoid, like a raceme in shape only, p. 13. 

 Racemose, of the tyi^e of the raceme. 



RacMs, the axis of an inflorescence, a compound leaf, etc., p. 206. 

 Raphe, the vascular strand running up the side of an anatropous 



ovule. 

 Receptacle, the dilated end of the peduncle or pedicel which acts as a 



bed on which the florets or their parts are inserted, p. 24. 

 Recurved, curved backwards, p. 262. 

 Reduced, cymes, &c., in which some flowers are missing, or in which 



the numbers are very small, p. 37. 

 Reflexed, turned back on its insertion. 

 Regular, with the parts so arranged round the axis that several planes 



of symmetry can be found. 

 Reniform, kidney-shaped, p. 344. 

 Reticulate, netted, p. 206. 

 Revolute, with the margins rolled back, p. 219. 

 Rhipidium, a fan-shaped cyme, p. 35. 

 Rosaceous, of the floral tyj^e of a Rose. 

 Rotate, wheel-shaped in the limb, the tube very short. 

 Rotund, approximately circular, ]i. 219. 

 Rugose, wrinkled, p. 181. 



Salver-shaped, like rotate but with a distinct tube, p. 339. 

 Samara, a winged achene, p. 233. 



Scale, a hardened or discoloured bract of a catkin, bud, &c., p. 34. 

 Scale-leaves, leaves of usually hardened texture, reduced size, and pro- 

 tective functions, p. 46. 

 Scape, a leafless jDeduncle inserted below the ground-level, p. 17. 

 Scarious, brown at the tips and margins as if scorched, p. 176. 



