Oak White, California 518 Oak-fern (see Fern) Oat (see Grass) Odontostomum Hartweg's 412 Onion Austin's 392 Bolander's 305 Broad-stemmed 388 Brewer's 385 Burlew's 388 Coastal 394 Crinkled 395 Cusick's 387 Douglas's 383 Dwarf 384 Early 396 Fringed 389 Geyer's 383 Hickman's 393 Hooker's 390 Jones's 393 Kellogg's 386 Lemmon's 392 Many-flowered 386 Narrow-leaved 394 Nevada 393 Nevius's 391 Nodding 382 Olympic 387 One-leaved 396 Paper-flowered 396 Parish's 389 Parry's 390 Patis 392 Peninsular 395 Pitted 391 Red Dark 389 Red-skinned 383 Rock 385 Sanborn's 390 Scythe-leaved 385 Serrated 394 Sierra 391 Red 388 Swamp 382, 384 Three-bracted 384 Tolmie's 387 Watson's 386 Onion-grass (see Grass) Ookow Northern 408 Orchard-grass (see Grass) Orchid Family 469 Orchid Bog Boreal 473 Green-flowered 472 Slender 472 Sparsely Flowered 473 Thurber's 473 White-flowered 474 Phantom 478 Round-leaved Large 477 Palm Family 344 Palm California Fan 345 Panicum (see Grass) Parsley-fern (see Fern) Pellitory Florida 527 Pennsylvania 526 Pepperwort Family 33 Pepperwort Hairy 34 Nelson's 34 Pickerel-Weed Family 349 Pilularia American 34 Pine Family 52 Pine Big Cone 59 Bishop's 60 Black 57 Bristle-cone 55 Coulter 59 Digger 58 Foxtail 54 Jeffrey 57 Knob-cone 58 Limber 54 Lodge-pole 59 Monterey 57 Nut 55 Piiion One-leaved 55 Parry's 55 Prickle-cone 60 Sugar 53 Tamarack 59 Torrey 56 White Mountain 53 Western 53 White-bark 54 Yellow Western 56 Pine-grass (see Grass) Piperia Alaska 474 Coast _ 477 Cooper's 475 Elegant 476 Lance-leaved 475 Long-spiked 476 Many-flowered 476 Narrow-petaled 475 Purple-flowered 477 Pine-vine California 536 Plantain Rattlesnake Menzies's 481 Water- Common 98 Fringed 99 Geyer's 98 Pleuropogon (see Grass) Polypody California 8 Coast 7 Western 8 PoNDWEED Family 83 Pondweed Common Floatin g 84 Curled-leaved 87 Eel-grass 89 Fennel -leaved 90 Horned 92 Large-leaved 85 Leafy 88 Long-leaved 87 Nevada 89 Northern 86 Nuttall's 85 Rafinesque's 84 Richardson's 88 Robbin's 90 Shining 87 Small 89 Spiral 85 Various-leaved 86 White-stemmed 88 Ziz's 86 Poplar Balsam 486 Prairie-grass (see Grass) Pretty Face 399 Purple-eyed Grass (see Grass) Putty-root Adam-and-Eve 482 Quack Grass (see Grass) Quaking-grass (see Grass) QuiLLWORT Family 35 Quillwort Bolander's 37 Braun's 37 Flett's 36 Flowering 95 Howell's 37 Nuttall's 38 Orcutt's 38 Piper's 36 Western 36 Rabbit's Foot (see Grass) Redtop (see Grass
Redwood 69 Reed Common 183 Giant 183 Reed-grass (see Grass) Rip-gut-grass (see Grass) Running-pine 45 Rush Family 349 Rush Basket 355 Baltic 354 Beaked- Brownish 280 White 280 Black-grass 356 Blunt-scaled 360 Bog 353 Bolander's 365 Brown -headed 367 Chestnut 364 Club- Dwarf 270 Few-flowered 271 Rush, Club Keeled 270 Low 271,272 Ne-ada 273 Three-square 272 Tufted 271 Water 272 Colorado 357 Columbia 364 Common 353 Cooper's 355 Coville's 359 Drummond's 352 Dudley's 357 Dwarf Inch-high 361 Short-styled 361 Yosemite 361 Green-headed 363 Hair-leaved 362 Iris-leaved 368 Knotted 366 Jointed 362 Long-anthered 367 Long-leaved 360 Long-styled 360 Mariposa 365 Merten's 363 Mexican 354 Oregon 362 Parrv's 352 Pointed 367 Regel's _ 359 Richardson's 363 Rocky Mountain 368 Salt 354 Scouring- Braun's Northern Prairie Summer Western Sharp-fruited Short-leaved Sickle-leafed Sierra Slender Soft Spike- Beaked Blunt Bolander's Capitate Creeping Decumbent Dombey's 42 41 42 41 42 366 357 359 364 358 353 266 263 265 262 263 265 266 Engelmann's 263 Flat-stemmed 266 Needle 264 Ovoid 262 Pale 264 Parish's 265 Purple 262 San Jacinto 264 Spiny 355 Spreading 353 Straight-leaved 358 Thread 353 Three-stamened 368 Toad Common 356 Round-fruited 356 Torrey's 366 Western 358
