408 
Protoplasm, circulation of, *184, 
185. 
Protoplasm, continuity of, 146. 
Pteridophytes, 252. 
Pteridophytes, remarks on, 286, 
295-297. 
Puccinia, study of, 259-262*. 
Pulvini, 145, *146. 
Race, 230. 
Raceme, *186. 
Raspberry, *374. 
Ray, medullary, 45. 
Ray-flowers, 188, *189. 
Receptacle, 199. 
Red clover, leaf of, *144. 
Regions of vegetation, 324. 
Regular flowers, 198. 
‘* Reindeer moss,’’ 274. 
Reproduction in alge, 256. 
Reproduction in ferns, 287, *288, 
*289, 291. 
Reproduction in flowering plants, 
212-215*, 
Reproduction in fungi, *258, *259, 
*260, *261, *262, *265, *266, 
*268, *270. 
Reproduction in morning-glory, 
390, 391. 
Reproduction in mosses, *284, 285. 
Resin passage, *93. 
Respiration, 172, 173. 
Retuse, *131. 
Rhachis, 287, *288. 
Rhizoids, hairs serving as roots in 
mosses and liverworts, *282, 
*289. 
Rhizopus, study of, 257, 258, 259. 
Rhodophycee, 232. 
Rhubarb roots, *47. 
Ring, annual, *100, *101. 
FOUNDATIONS OF BOTANY 
Ringent, *203. 
Rise of water in stems, 108-113. 
Rockweed, study of, 250-252*. 
Root, 36-61. 
Root, adaptation to work, 59, 60. 
Root-cap, *42. 
Root-climbers, *389, 73. 
Root, dicotyledonous, section, *44. 
Root, elongation of, 30, 31. 
Root, exogenous, *44. 
Root, fleshy, 45, 46, *47. 
Root-hair, 31, *32, *49, 50. 
Root-pressure, 54, *55. 
Root-section, *42, *44. 
Root-sheath or root-pocket, 37. 
Root-system, 47, 48. 
Roots, absorbing surface of, 49, 
50. 
Roots, absorption and temperature, 
55, 56. 
Roots, adventitious, 36. 
Roots, aerial, 36, *37, *38, *39. 
Roots, brace-, *38. 
Roots, fascicled, *41. 
Roots, fibrous, *41. 
Roots, growth of, 30, 51. 
Roots, hemlock, lateral extension 
of, *60. 
Roots, movements of young, 56, 
*57, *58, 59. 
Roots, parasitic, 39, *40. 
Roots, primary, 36. 
Roots, propagation by, 61. 
Roots, selective action of, 54. 
Roots, soil-, 56. 
Roots, storage of nourishment in, 
46, *47. 
Roots, structure of, 41-46. 
Roots, water, 37. 
Rootstock, 75, *76, *77. 
Rotation of protoplasm, *184, 186. 
1 
