126 



INDEX AND GLOSSARY. 



Pendulous ; drooping, hanging dowii. 



Pentagonal ; with 5 sides and 5 angles. 



Pentandrous ; with 5 stamens. 



Pepo, 116, 13. 



Perennial ; enduring three years or more. 



Perfoliate, 242, 2. 



Perianth, 54. 



Pericarp, 112. 



Perigynous ; inserted into the calyx. 



Peristome ; the rim or border surrounding 

 the orifice of the thee a of a moss. 



Pemianent ; same as persistent. 



Persistent, 98. 



Personate, 104, 5. 



Petal, 101. 



Petaloid ; resembling petals. 



Petiolate, 221. 



Petiole, 221, 222. 



Ph^nogamia, 46, 345. 



PUose, 99, a. 



Pimise ; (wmgs) the segments of a pinnate 

 leaf. 



Pinnate, 240, 1, 



Pinnatifid, 232, 15. 



Pistil, 58, 75. 



" physiological structure of, 83. 

 " theoretical structure of, 84. 



Pistillate ; bearing pistils. 



Pith, 199. 



Placenta, 87. 



Plaited, 217, 6. 



Plant defined, 10. 



Plicate ; folded like a fan. 



Plumose, 99, a. 



Plumule, 124, b. 



Pod ; legumes, siliques, &c. 



Pollen, 70. 



Polyandrous ; with many stamens. 



Polyadelphous ; stamens united in seve- 

 ral sets. 



Polygamous ; having staminate or pistil- 

 late and perfect flowers oh the same 

 tree. 



Polygynous ; with many pistils. 



Polypetalse, 354. 



Polypetalous, 101. 



Polysepalous, 96. 



Polyspermous ; manv-seeded. 



Pome, 116, 12. . 



Pores; apertures of perspiration in the 



cuticle. 

 Premorse, 145, b. 

 Prickles, 43. 

 Primine, 90. 

 Prismatic ; formed like a prism, with 3 



or more angles. 

 Procumbent ; trailing on the ground. 

 Prohferous ; forming young plants about 



the roots. 

 Prostrate ; trailing flat on the ground, 

 Pubescent, 41, a. 

 Pulp ; the soft, juicy, cellular substance 



found in berries and other fruits. 

 Pulverulent; powdery. 

 Punctate, 237, 10. 



Pungent ; stinging or pricking. 

 Putamen, 112. 

 Pyriform; pear-shaped. 

 Pyxis, 116, 11. 



Quinate, 241, 9. 

 Quincuncial, 108, 3. 



Raceme, 298. 



Racemose ; resembling a raceme. 



Rachis, 290. 



Radiate ; when the outer flowers of an in- 

 florescence are largest, or furnished 

 with rays. 



Radiate-veined, 230, 2. 



Radical, 220. 



Radicle, 124, a. 



Ramial, 220. 



Ramose, 144. 



Raphe, 121. 



Raphides, 29, f. 



Receptacle, 59. 



Recurved ; bent or curved backwards. 



Reflexed ; curved backwards and down- 

 wards. 



Reniform, 232, 12. 



Repand, 235, 11. 



Respiration, 275 — 280. 



Resupinate ; inverted. 



Reticulate, 229, 1. 



Retrorse ; bent backwards. 



Retuse, 236, 5. 



Revolute, 217, 4. 



Rhizoma, 181. 



Rhomboid ; oval and angular in the mid- 

 dle. 



Rib [costa] ; ridge caused by projecting 

 veins, &c. 



Ringent, 104, 5. 



Root, 136 — 160. 

 " growth of, 153. 

 " forms of, 143, &c. 

 " use of, 154. 

 " physiological structure of, 151. 



Rosaceous, 105, 2. 



Rostrate ; with a beak. 



Rosulate ; arranged in a radiant manner, 

 like the petals of a double rose. 



Rotate, 104, 4. 



Rugose, 237, 9. 



Runcinate, 232, 13. 



Runner, 185. 



Saccate ; with a bag or sack. 

 Sagittate, 232, 11. 

 Samara, 116, 10. 

 Sap, 268. 

 Sapwood, 203. 

 Sarcocarp, 112. 

 Scabrous; rough. 



Scale ; the bracts of the Composite. 

 Scape, 186, 289. 



Scarious ; drv, colorless, membranaceous. 

 Scorpoid ; when racemes are revolute be- 

 fore expansion, as Drosera, &c. 



