426 



INDEX AND GLOSSARY 



Pear, 359, Figs. 63, 101, 102, 182, 266; 



phyllotaxy, 49; sclerenchyma, 2r)7; 



-apple graft, 28; bud, 36, 40, Figs. C2, 



57, 58, 61-63, 66; fruit, 155. Fig. 1:66; 



-hawthorn graft, 28; inflorescence, 108, 



Fig. 182; leaf-scar, 37; -quince graft, 



28; thorns, 104; tree, 15; form of, 63, 



Figs. 101. 102. 

 Peat. 202. 

 Pedicel: stem of one flower in a clus'cr. 



(247). 

 Peduncle: stem of a flower cluster or of a 



solitary flower, (247). 

 Pelargonium hortorum, 314, Fig. 183. 

 Peltate: attached to its stalk inside tlio 



margin, (197), Figs. 126, 135. 

 Pentamerous: in 5's, (271). 

 Pentstemon. 375. 

 Peony fruit. 151. 

 Pepo: fruit of pumpkin, squash, etc, 



(298). 

 Pepper-grass, 336. 

 Pepper, red, 378, Fig. 488. 

 Peppermint, 370. 

 Perennial: of three or more seasons' 



duration, (10). 

 Perfect flower: having both stamens and 



pistils. (257). 

 Perianth: floral envelopes of lily-like 



plants (more properly of nionocoty- 



ledonous plants), (275). 

 Periblem, 253. 



Pericarp: ripened ovary, (286). 

 Perichatia, 190. 

 Perigynous: borne around the ovary, 



(283). 

 Peristome, 191. 

 Peritherium, 183. 

 Periwinkle, 3S7, 388. 

 Persistent: remaining attached, (204). 

 Personate, 137. 

 Petal: one of the separate leaves of a 



corolla, (251). 

 Petiolule: stalk of a leaflet, (196). 

 Petiole: leaf-stalk, (194) 

 Petunia, 378, Figs. 489, 490. 

 Phaseolus, 352, Figs. 471, 472. 

 Phellogen, 266. 

 Phenogam: seed-bearing or flowering 



plant, (325), 292. 

 Philadelphus, 363. 

 Phloem, 257. 



Phlox, 137, 225, 384, Fig. 218. 

 Phosphorus, 72. 

 Photosynthesis: the making of organic 



matter from COo and water, in the 



presence of light, (163). 

 Phyllotaxy: arrangement of leaves and 



flowers on the stem, (111). 



Phyllodiuni: leaf-like petiole, (214). 



Phy.salis, 377. 



Pliysostegia inflorescence. Fig. 175. 



Picea, 293. Figs. 270. 271, 424. 



Pie-plant. 317, Figs. 78, 79 



Pigweed. 3, 62, Figs. 372 383 384. 



Pine, 15, 292. Figs. 10 21 145, 272, 

 421-3; cone, Fi<;- 272: foliage, Fig. 

 145; stem. Fig. 407; tell-rale. Fig. 364: 

 trees. Fig 353; pollination, 132. 



Pine-sap. 394. 



Piney, 326. 



Pink, 321; dehiscence, 152, Fig. 2.50. 



Pinnate, 91. 



Pinnatifid, 92. 



Pinus, 292, Fig. 421-3. 



Pinxter flower, 394. 



Pistil: ovule-bearing or seed-bearing or- 

 gan, (253). 



Pistillate: having [listils and no slaincns. 

 (257). 



Pisum sativum, 349. Figs. ICO, 2St. 



Pitchforks, 162, 40S, Fig. 499. 



Pits, 237. 



Plankton. 199. 



Plantain infiorescence, 116. 



Plant-breoiling, 231. 



Plant-food, defined, 61. 



Plasmodium, 235. 



Plerome, 253. 



Plum, 20, 356, Figs. 194, 262, 478, 479; 

 phyllotaxy, 49; pollination. Fig. 202; 

 blossom. Fig. 194; drupe, 153, Fig. 

 262; thorns, 104. 



Plumule: bud in the embryo, (.305). 



Plur-annual: of one .season's duration 

 because killed by frost, (14). 



Pod: dehiscent pericarp, (287). 



Podophyllum, 329. 



Pogonia, 310. 



Poinscttia, 320; bracts, 107; starch, 

 247-249. 



Polarity, 50. 



Polemoniacefp, 384. 



Polianthes tuherosT, 301. 



Pollards, 54, Fig. 87. 



Pollen germinating. Fig. 203. 



Pollen: spores borne by the stamen, 

 (254), 175. 



Pollination: transfer of pollen from sta- 

 men to pistil, (263). 



Pollinium: pollen in a coherent mass, 

 (279). 



Polyanthus, 390. 



Polygalaceffi, 346. 



Polygonaeea', 317. • 



Polygonatum, 301. 



Polygonum, 318, Figs. 193, 4,55; climb- 

 ing, 108. 



