INDEX AND GLOSSARY 



459 



legume, 157; nodules. on root, 78; pistil, 

 129, Fig. 206; stock, 384, Fig. 532; 

 sweet, 254, 263, 381, Fig. 245; tendril, 

 114, Fig. 177. 



Pea'ch, 2, 32, 251, 271, 287, 387, 388, 

 Figs. 105, 431, 476, 535; bud, 37, 39, 

 40, 41; crystals, 276; fruit, 161; foliage, 

 65; family, 379; inclusions, 275; leaf, 

 99; phyllotaxy, 48; and nectarine, 237; 

 pruning, Figs. 103, 105, 108. 



Peanut, 141, 157, 251, Figs. 237, 238, 

 274, 430. 



Pear, 251, 272, 391; bud, 36, 39, 40, 

 111, Figs. 56, 61, 62, 65-67, 70; dis- 

 eases of, 92; fruit, 162, 266, Fig. 293; 

 form of, 68, Figs. 118, 119; inflo- 

 rescence, 123, Fig. 196; leaf-scar, 37; 

 phyllotaxy, 48; -quince graft, 27; 

 sclerenchyma, 282; thorns, 108. 



Peat, 210. 



Pedicel: stem of one flower in a cluster, 

 (261). 



Peduncle: stem of a flower-cluster or of a 

 solitary flower, (261). 



Pelargonium, 374. 



Peltate: attached to its stalk inside the 

 margin, (209), Figs. 135, 140. 



Pentamerous: in 5's, (291). 



Pentstemon, 406. 



Peony, 358; fruit, 157; stomates, 299. 



Pepo: fruit of pumpkin, squash, etc., (325). 



Pepper-grass, 243, 368. 



Pepper, red, 4, 410, Fig. 547. 



Peppermint, 401. 



Pepper-root, 367. 



Perennial: of three or more seasons' 

 duration, (10). 



Perianth: floral envelopes of lily-like 

 plants (more properly of monocoty- 

 ledonous plants), (295). 



Periblem, 279. 



Pericarp: ripened ovary, (311). 



Perichsetia, 197. 



Perigynous: borne around the ovary, 

 (306). 



Peristome, 198. 



Perithecium, 190. 



Periwinkle, 419. 



Persimmon, 271. 



Persistent: ren-aining attached, (216). 



Personate, 145, Fig. 243. 



Peruvian bark, 271. 



Petal: one of the separate leaves of a 

 corolla, (266), Fig. 209. 



Petiole: leaf-stalk, (206). 



Petiolule: stalk of a leaflet, (208). 



Petunia, 410, Figs. 548, 549. 



Phaseolus, 384, Figs. 530, 531. 



Phellogen, 293. 



Phenogam: seed-bearing or flowering 

 plant, (353), 324. 



Philadelphus, 395. 



Phloem, 283. 



Phlox, 144, 233, 416, Fig. 241; family, 

 416. 



Phosphorus, 76. 



Photosynthesis: the making of organic 

 matter from CO 2 and water, in the 

 presence of light, (177, 178). 



Phyllodium: leaf-like petiole, (226), Fig. 

 163. 



Phyllotaxy: arrangement of leaves and 

 flowers on the stem, (112). 



Physalis, 409. 



Physostegia, inflorescence, Fig. 185. 



Picea, 325, Fig. 483. 



Pie-plant, 350. 



Pigeon-grass, 243. 



Pigweed, 3, 67, 239, 242, 243, Figs. 

 406, 408, 411. 



Pine, 15, 93, 162, 232,. 249, 281, 394, Figs. 

 10, 19, 421-423, 451, 462, 481, 482; and 

 cone, Fig. 299; foliage, Fig. 158; ger- 

 mination, 171; and light, 44; needles, 

 102; pollination, 138; shoot, Fig. 158; 

 stem, Figs. 461, 466; trees, Figs. 388, 

 390; wood structure, 267, Fig. 440. 



Pine-sap, 425, 426. 



Piney, 258. 



Pink, 4, 159, 353; family, 353; fire, 354; 

 grass, 342; wild, 354. 



Pinnae, 321. Pinnules, 321. 



Pinnate, 95, Fig. 141. 



Pinnatifid, 97. 



Pinus, 324, Figs. 481, 482. 



Pinxter flower, 425. 



Pistil: ovule-bearing or seed-bearing or- 

 gan, (271), Figs. 206-209. 



Pistillate: having pistils and no stamens, 

 (274), Figs. 190, 229, 230. 



Pisum, 381. 



Pitchforks, 440, Fig. 558. 



Pits, 267. 



Plane tree, leaf-scar, Fig. 474. 



Plankton, 207. 



Plantain, 243, inflorescence, 120. 



Plant-breeding, 240. 



Plant-food, denned, 69. 



Plant society, 228. 



Plastid, 263, 264. 



Plerome, 279. 



Pleurisy root, 418. 



Plum, 20, 251, 254, 387, 388, Figs. 537, 

 538; blossom, 162, Fig. 209; bud, 39; 

 drupe, 161, Fig. 289; phyllotaxy, 48; 

 pollination, Fig. 218; thorns, 108. 



Plumule: bud in the embryo, (332). 



Plur-annual: of one season's duration 



because killed by frost, (14). 

 .Pod: dehiscent pericarp, (312). 



Podophyllum, 361. 



Pogonia, 342. 



