186 



INDEX AND GLOeSABY. 



Normal, according to rule, regular. 

 Nuoiform, nut-like. 

 Nueleua, kernel (so. ovule), 537. 

 Nut. See Glans, 562. 



Ob (in composition), denotes inversion ; as, 

 Obcompressed, flattened back and front. 

 Obcordate, 284. Oblanceolate, 266. 

 Oblique, unequal-sided (so. leaves). 

 Oblong, 265. Obovate, 266. Obtuse, 283. 

 Obvolute (in 33ativation), 214. 

 Ocbrca, sheathing stipules, 249. 

 OcUroleCicous, cream-color, pale yellow. 

 Octo (in Greek composition), eight. 

 Ootandria, 877. Octandrous, 8-stamened. 

 Oetogynous, 8-styled, 878. 

 Offset, a short lateral shoot, 159. 

 Oligos (in Greek composition), fcvr ; as, 

 Oligandria, with few stamens. 

 Olivaceous, olive-green, brownish-green. 

 Opaque, dull, not shining. 

 Opercular, with a lid, 496. 

 Opposite, two at a node, 153, 222. 

 Orbicular, Orbiculate, circular, 265. 

 Orchidaceous, 484. 

 Organogens, 829. 

 Organography, 39. 



Organic world, 30. Organic soU, 837. 

 Orthotropous (ovule), erect, 536. 

 Osseous, bony, as tlie peach-stone. 

 Oval, 265. Ovate, 265. 

 Ovary, 515. Ovule, 532. 

 Ovoid, egg-shaped as in fruits. 

 Oxygen, 831. 



Palea3 or Pales, 339, 489. 



Paleaceous, chaffy, having pales. 



Palmi-veined, 260. Pahnate, 272. 



Panduriform, fiddle-shaped. 



Panicle, 352. Paniculate, pauioled. 



Papihonaceous, 475. 



Pappus the calyx of Composites, 485. 



Parallel-veined, 258. 



Pariphyses, jointed threads arouna the 



antheridia of mosses. Fig. 522. 

 Parasites, 144. 

 Parencliyma, 664, 730. 

 Parietal, on the wall (paries), 526. 

 Parted, deeply divided into parts. 

 Patent, wide open. Patulous, half open. 

 Pear-shaped, obovoid, larger above. 

 Pectinate, combed, finely pmnatifld. 

 Pedate, shaped like a bird's foot, 273. 

 Pedicel, 328. Peduncle, 327. 

 Peltate, shield-form, 271. 

 Pendent, Pendulous, hanging, drooping. 

 PeniciUate, with a tuft of hairs, as if a 



camel's-hair pencil. 

 Pente (in Greek composition), five ; as, 

 Pentamerous, 5-parted. 

 Peatandrous, 503. Pentandria, 877. 



Pepo, a fruit like a melon, 568. 

 Perennial, living several years, 92. 

 Perfect flower, with both stamen asd 



pistil. 

 Perfoliate (through the leaf), 293. 

 Peri (in Greek composition), around. 

 Perianth, 402 ; forms o^ 469. 

 Pericarp, 547. 

 Perigynium, 488. 

 Perigynous, 464. 

 Period of flowering, 365. 

 Perisperm, same as Albumen, 590. 

 Peristome, G32. 



Persistent, remaining long in place. 

 Personate, 480. 

 Petals, 401 ; forms of, 455. 

 Petalifera3, 898. 

 Petaloid, with the fonn or texture of 



petals. 

 Petiole, 243. Petiolate, 239. 

 Petiolule, 246. 

 Phsenogamia, 89, 895. 

 Phyllodium, plur. Phyllodia, 307. 

 Phyllotaxy, leaf-arrangement, 220. 

 Physiology, 41, 736. 

 Phytology, 43 (Greek, phyios, a plant). 

 Pileorhiza, cap of a rootlet, 725. 

 Pileus, cap of some Pungals. Fig. 537, c 

 Pilous, with erect, thin hairs, 298. 

 Pine, size of, 101, — CaUfornian, 101. 

 Pinnate, 287. Pinnatifld, 268, 269. 

 Pistil, 407, 511. 



Pitchers (leaves). See Ascidia, 308. 

 Pith, 692. Pitted cells, 650, 667. 

 Pitted, with depressions or excavations. 

 Placenta, 520 ; free axile, 528. 

 Pleurenchyma, 666. 



Plicate, plaited lengthwise as a fan, 394. 

 Plumous, feathery. 

 Pliimulo (a little plume), 103, 593. 

 Pollen, 608. Pollen tube, 756. 

 PoUinia, masses of pollen, 500. 

 Poly (in Greek compounds), many. 

 Polyadelphous, 506,-877, § 3. 

 Polygamous, Polygamia, 877, § 5. 

 Polypetalaa. See Dialypetate, 903. 

 Polypetalous, Polysepalous, 458. 

 Pome, a Iruit like an apple, 569. 

 Posterior, next the axis. 

 Potato, manner of its growth, 188. 

 Precocious, floweruig before the leaves. 

 Praefoliation, vernation, 209. 

 Premorse, ending abruptly, 185. 

 Press for drying plants, 57. 

 Prickles, 18, 684. 

 Primine, same as Testa, 535. 

 Primordial utricle, 645. 

 Prismatic, prism-shaped, having severaj 



parallel, longitudinal angles. 

 Procumbent '(stem), 148. Fig. 38. 

 Produced, extended more than usual 



