INDEX. 



677 



Polyps, symmetry of, 335. 

 Potamogeton Claytonii, 402. 



compressus, 402. 



natans, 402. 



pectinatus, 403. 



perfoliatus, 402. 



pusillus, 403. 



Robbinsii, 403. 

 Potentilla diversifolia, 381. 



glandulosa, 381. 



gracilis, 381. 



Revision of, 549. 



Index to species, 563. 

 Poterium annuum, 381. 



officinale, 381. 

 Precession of the equinoxes, 



333. 

 Prehistoric man, 302, 303, 309. 

 Prosartes Hookeri, 404. 

 Prunus mollis, 381. 



Virginiana, 381. 

 Psilocarphus, 652. 



globiferus, 652. 



Oreganus, 390, 652. 



tenellus, 652. 

 Psoralea lanceolata, 380. 



physodes, 380. 

 Pterigopappus, 653. 



compactus, 653. 

 Pteris aquilina, 411. 

 Pterostegia, 199. 



diphylla, 200. 



drymarioides, 200. 

 •macroptera, 200. 



microphylla, 200. 

 Publication Committee, 329, 440, 



441. 

 Pugiopappus, 659. 



Bigelovii, 660. 



Breweri, 660. 



calliopsidea, 660. 

 Pyrola bracteata, 394. 



chlorantha, 394. 



minor, 394. 



picta, 394. 

 Pyrrocoma Menziesii, 638. 

 Pyrus rivularis, 382. 



sambucifolia, 382. 

 Pyxidanthera, 244, 246. 



R. 



Ranunculus adoneus, 373. 



alismgefolius, 372. 



Cymbalaria, 372. 



fascicularis, 372. 



Flammula, 373. 



heterophyllus, 372 



Nelsoni, 372. 



orthorhynchus, 373. 



Pseudo-Hirculus, 372. 



tenellus, 373. 

 Reports, 7, 53, 104, 121, 140, 214, 

 220, 223, 300, 327, 329, 



439, 440, 442, 485, 506. 

 Republican Calendar, 349. 

 Rhamnus Purshianus, 379. 

 Rhododendron albirlorum, 394. 



Californicurn, 394. 

 Rhus diversiloba, 379. 

 Rhynchospora alba, 406. 

 Ribes bracteosum, 383. 



divaricatum, 383. 



sanguineum, 383. 



setosum, 383. 

 Richmond, Geology of, 307. 

 Romanzovia Sitchensis, 397. 

 Rosa blanda, 382. 



Californica, 382. 



fraxinifolia, 382. 



gymnocarpa, 382. 



Kamtschatica, 382. 



pisocarpa, 382. 

 Rubus leucodermis, 381. 



macropetalus, «382. 



Nutkanus, 381. 



pedatus, 381. 



spectabilis, 381. 

 Rudbeckia oecidentalis, 391. 

 Rumex Acetosa, 399. 



salicifolius, 399. 

 Rumford Committee, 1, 6, 104, 

 109, 121, 140, 220, 311, 

 328, 329, 332, 335, 337, 



440, 441. 

 Fund, 300. 



Medal, award, 141,337. 

 Rumford's Works, 1, 109, 311, 

 327, 506. 



