Pontederia, Cat., IV.,,25. 
PONTEDERIACE, Cat., IV., 25. 
Popular Science, [1I., 22. 
Populus, Cat., III., 44 
fungus on, V., 4. 
tremuloides, I. , 20. 
Portfolio, collecting, IL, 33, 
Portulaca, Cat., I., 16: os eg 
PORTULACACES, Cat., 
Postage, LI., 10; III., “8: 1V., 44; V., 14. 
Potamogeton, Cat., lll., 53. 
Potash in Phegopteris, ill., 41, 
Potentilla, Cat., 
arguta, L, 31, bis. 
fruticosa, I., ‘a1. 
recta, II., $1. 
Poterium, Mg i > 25. 
Prefatory, I 
eon Te 16, 41; III., 18. 
ula Mistassini ca, IV., 15, 
Perectsene. Cat., I1., 19, 20. 
Pronuba Ynecasella, a 37; IV., 63. 
Proserpinaca, Cat., I., 33 
Protomyces, sg oe eee v. sie 
Prunus, y ro 
; ana, V., 26. 
eg lIL., 51. 
Pennsylvanica, I., 31. 
pumila, V., 26. 
Virginiana, I., 31. 
Publications, L., 6, 20; II., 1, 11; 
eM 19, 23, rg 30, 35, 39, 48; 
Iv. 3, 20, 42, 6 
With 27; 85, 3s rt "52. 
Puccinia Anemones, LL, 26. 
curtipes, V., 2 
Gerardii, III., 2. 
Pseudaneura, V., 15. 
Pterospora, Cat., IT., 14. 
Andromedea, gigantic, II1., 52. 
Pycnanthemum, Cat., I 
mrvibeng ¥; 35. 
Pyrola, Cat., II., 14. 
Pyrus, Cat. 
gus on, V., 
-Pyxidanthera, Cat., in 19. 
Quamloclit, ae II., 35. 
Quercus, Cat., IIL 
bicolor, li., 20. 
macrocarpa, III., 20. 
palustris (Pin Oak), I., 46. 
oe agen hybris, III., 20. 
Prinus, III., 
tinctoria, IiL., 20. 
fungus on, V., 26, 40. 
Radula Mannii, V., 15, 
RANUNCULACEE, Cat., as 1, 8. 
- Rafinesque, C.8., IV., 
Ranunculus, Cat., is pe 
ac 
anttadion | Lj 445: 12, 235 -4V:,- 28: 
Raphanus, Cat., L, 10. 
Regel on Vitis, V.1 
_ Revival of Plants in Water, IT., 38. 
Rhacopilum Perr ae Wey 61. 
RHAMNACEZ, ee -, 18. 
Rhamnus, Mieco 18. 
cus, II’., 47. 
Rhexia, Cat., I., 33. 
Rhododenaron, C Cat,, IL., 14." 
Cat., II., 14; TE1., 82. 
Rhus, ae a 17. 
Richardia Athiopica, IV., 16, 20, 47, 
fungus on, IV., 47, 
8 
Rinodina Hallii, V 
sophod 
Romalina, reticulata, III., 
Root fibre ‘penetrating sack III., 40. 
Rosa, Cat., 
a Sn ag IL, 24. 
RosacE#, Cat., I., 25, 26. 
RUBIACE&, Cat., I., 41. 
Rubus, Cat., I., 26. 
neglectus, I., 31 (strigosus), 36. 
occidentalis, white var., I., 31. 
trigosus, white var., I., 31. 
Rudbeckia, uae a 4, 
rta, 
triloba, iv., 42. 
pine Sagumsnl, WV, 4 
anni, IV., 
Patientia, ce 30, 
Ruppia, erg III, 53. 
Ruta, Cat., [.,17. 
RUTACE, Cat., Leas 
Rhyncospora, Cat, "y 36, 37. 
Lusca, IT., 28. 
nitens, Ill., 44. 
Sabbatia, Cat., IT., 37. 
Cat., 1., 16. 
Sagittaria, Cat., III., 58. 
SALICACE, Cat., teh 44 3-35. 
Salicornia, Cat., II L, 3. 
Salix, Cat., IIL., ~~ 20, Vid. Willows. 
alba, III., 27, 42. 
candida, IIL, 38. 
cordata, III., 27, 42. 
Pew ag a 
humilis, TIl., 26 , 41. 3 
livida, var. occidentalis, III., 42. 
lucida, ITI., 27, 38, 42. 
myrtilioides, Ti, 38, 
.| Salvia, Cat., II., 29. 
Sambucus, pea’ a 
Samolus, at., I, 20. 
Sandwich Istands, oie of, V., 14, 16. 
Sanguinaria, C L ae 
at., ‘2 9. 
Sanicula, Cat., I., 34. 
Santa Cruz, Island of, III., 38; IV., 5. 
SANTALACE#, Cat., IL, 5. 
Sap, circulation of, hae 62; Way dee 
pte ings Cat., I 
urea, III., 26. 
secretion of, IV., 40. 
variolaris, V., 27. 
SARRACENIACEX, Cat, L, 2 
, Cat., IIT., 5. 
SAURURACE#, Cat, IIL, 5. 
Saururus, Cat., IIL., 5: V., 42, 51. 
Saxifraga, : 
