306 
INDEX AND GLOSSARY. 
Node, 227, 202. 
Normai, regular, according to rule. 
Number of Genera, 246. 
Number of Species, 246, 
Nut, a simple, 1-seeded, hard fruit. 
Ob (in composition) implies inversion ; as 
Obcordate, “nversely heart-shaped, 84. 
Oblanceolate, 17. 
Oblique, unequal, one-sided 
Oblong, 16. 
Obovate, 17. 
Obsolete, indistinct, as if worn out. 
Obtuse, blunt, 83. 
Obvolute, 188, 
Ochree, 47. 
Odd-pinnate, 37. 
Offset, a short, thick runner. 
Opercular dehiscence, 104. 
Opposite, 50. 
Oiticular, rounded, 16. 
Orders, 247. 
Ordinal, relating to the orders. 
Oval, 16. 
Ovary, 121, 128. 
Ovate, 2. 
Ovoid, egg-shaped. 
Ovules, 123, 
Pales, the inner chaff of grass flowers. 
Palmate, hand-shaped. 
Palmate venation, 10. 
Palmately ternate, 38, 
Panduriform, fiddle-shaped. 
Panicle, 153. 
Papilionaceous, 89. [cesses. 
Papillous, with small, gland-like pro- 
Pappus, 188. 
Parallel venation, 11. 
Parasite, a plant living on other plants. 
Parietal, of, or adjoining the wall; as 
Parietal placenta —Fig. 269. 
Pectinate, comb-like, with long, narrow 
segments. 
Pedate, foot-shaped, 26. 
Pedicel, 143. 
Pedicellate, furnished with a pedicel. 
Pedunele, 148. 
Pellucid, transparent. 
Peltate, 20.—Fig. 25. 
Pendulous, drooping, hanging down. 
Pentandrous, with 5 stamens, 
Pepo, 175. 
Perennial, enduring 3 years or more, 218. 
Perfect flower, 110. 
Perfoliate, 42. 
Perianth, 66. 
Pericarp, 166. 
Pirigynous, inserted into the calyx, 83. 
Persistent, permanent, not falling off. 
Personate, 97. 
Petal, 65. 
Petaliferse, 257. 
Petaloid, resembling petals. 
Petiole and Petiolate, 3. 
Petiolule, 35. 
Pheenogamia, 250. 
Pilous, 62: 
Pine-apple, 1838. 
Fee (wings), segments of a pinnate 
eaf, 
Pinnate, 86. 
Pinnately ternate, 83. 
Pinnatifid, 24. 
Pinnatisect, 25. 
Pistil, 68.— Lesson 18. 
Pisttllate, bearing pistils. 
Pith, the central cellular substance of the 
stem. 
Placenta, a lobe or fleshy ridge bearing 
the seeds. 
Plaited, same as Plicate. 
Plan of the flower.—Lesson 17, 
Plicate, folded like a fan. 
Plumous, feathery or feather-like. 
Plumule, 190, 191. 
Pod, dary fruit; as capsule, legume, d&e. 
Pollen, 100. 
Poly (in composition) signifies many; as 
Polyandrous, with many stamens. 
Polyadelphous, 107. 
Polygamous, having perfect flowers, with 
staminate or pistillate flowers on the 
same plant. 
Polypetale. See Dialypetale, 258. 
Polypetalous, 75, 258, 
Polysepalous, 75. 
Pome, 176. 
Porous dehiscence, 104. 
Premorse, abrupt at end, as if bitten off. 
Prickles, 57. 
Process, any projection from the surface. 
Procumbent, 224, 
Prostrate, 224. 
Pubescent, 61. 
Pulp, the soft, juey parts of fruits. 
Punctate, dotted as if with points. 
Pyriform, pear-shaped. 
Pyxis, 178. 
Quaternate, growing in fours. 
Quinate, growing in fives, 40. 
