List of Rhododendrons
Collected on the Yunnan-Tibet Border by J. R. Rock, 1948
The following are the field numbers as listed.
| No. | Elev. ft. | ||
| 1. | Rhododendron species. | Shrub 5 ft. - forest back of Ch'ang-p'u-tung slopes of Mt. Ke-nyi-chum-po | 11,000 |
| 2. | " | Shrub 6-8 ft. - same locality as No. 1 | |
| 3. | " | Tree 8-10 ft. - in gorge back of Ch'ang-p'u-tung | |
| 4. | " | Tree or shrub 6-9 ft. - in the same location as No. 3 | |
| 5. | " | Shrub 1-2 ft. - alpine region of Mt. Ke-nyi-chum-po | 14,500 |
| 6. | " | Shrub 3 ft. - alpine region of Mt. Ke-nyi-chum-po | 14,000 |
| 7. | " | Shrub 2 ft. - alpine region of Mt. Ke-nyi-chum-po | 14,000 |
| 8. | " | Tree 10 ft. - lower slopes in fir forests of Mt. K | 11,000 |
| 9. | " | Tree 6-10 ft. - lower slopes in fir forests of Mt. K. | 11,000 |
| 10. | " | Shrub 4-5 ft. - lower slopes in fir forest of Mt. K. | 10,500 |
| 11. | " | Shrub 2-5 ft.- Alpine slopes among rocks Mt. K. | 15,000 |
| 12. | " | Shrub 3 ft.- Alpine slopes among rocks of Mt. K. | 15,000 |
| 13. | " | Shrub 8-10 ft. - halfway slopes in forests of Mt. K. | 11,000 |
| 14. | " | Shrub or small tree 6-10 ft. | 11,000 |
| 15 | " | Small tree 6-9 ft. - back of Chang-p'u-tung by Salwin | 5,600 |
| 16. | " | Tree 15-30 ft. leaves large - halfway slopes spruce forest gorge back of Ch'ang-p-ut'ung | 11,000 |
| 17. | " | Shrub 2-3 ft.- near Salwin River | 5,600 |
| 18. | " | Shrub 3-5 ft.- alpine region of Mt. Ke-nyi-chum-po | 14,000 |
| 19. | " | Shrub 4-6 ft- alpine region, halfway slopes of Mt. K. | 11,000 |
| 20. | " | Shrub 2-3 ft.- alpine region, halfway slopes of Mt. K. | 14,000 |
| 21. | " | Shrub 1-3 ft.- halfway slopes of Mt. K. | 11,500 |
| 22. | " | Shrub 4 ft.- alpine region of Mt. K. | 14,000 |
| 23. | " | Shrub 2-3 ft- alpine region of Mt. K. | 14,000 |
| 24. | " | Shrub 3-4 ft.- alpine region of Mt. K. | 14,000 |
| 25. | " | Tree 25-30 ft.- halfway slope of Mt. K. | 12,000 |
| 26. | " | Tree 20-25 ft.- halfway slope of Mt. K. | 12,000 |
| 27. | " | Shrub 3-4 ft. - alpine region of Mt. K. | 13,000 |
| 28. | " | Tree 10-15 ft. - in spruce forest of Mt. K. | 11,500 |
| 29. | " | Tree 8-10 ft. - in spruce forest of Mt. K. | 11,500 |
| 30. | " | Tree 15-20 ft.- in spruce forest of Mt. K. | 11,500 |
| 31. | " | Shrub 3-4 ft.- alpine region of Mt. K. | 13,000 |
| 32. | " | Shrub 4-6 ft.- halfway slopes of Mt. K. | 1,500 |
| 33. | " | Shrub 5 ft.- halfway slopes of Mt. K. | 11,500 |
| 34. | " | Shrub 5-8 ft.- on cliffs exposed on Mt. K. | 12,000 |
| 35. | " | Apocynaceous 5-6 ft.- along river in Ssu-Chi't'ung gorge | 10,000 |
| 36. | " | Tree 15-25 ft.- halfway slopes spruce forest S. gorge | 10,000 |
| 37. | " | Shrub 8 ft.- halfway slopes spruce forest S. gorge | 10,000 |
| 38. | " | Tree 15-30 ft.- halfway slopes spruce forest S. gorge | 10,000 |
| 39 | " | Shrub 3-4 ft.- alpine region S. gorge | 14,000 |
| 40 | " | Shrub 3-4 ft.- alpine region S. gorge | 14,000 |
Collected in the Ssu-chi-t'ung gorge near Salwin River, the gorge culminates into the Gumba La, a high pass on the Salwin-Irrawaddy
| No. | Elev. ft. | ||
| 41. | Rhododendron species | Shrub 2-3 ft.- alpine regions of the Gomba La | 14,000 |
| 42. | " | Tree 20-35 ft.- halfway up the gorge | 11,000 |
| 43. | " | Shrub 1-2 ft. - alpine regions of Gomba La | 14,000 |
| 44. | " | Shrub 2-3 ft - alpine regions of Gomba La | 14,000 |
| 45. | " | Shrub 1-2 ft.- alpine regions of the Gomba La | 14,000 |
| 46. | " | Shrub 2-4 ft - alpine regions of Gomba La | 14,000 |
| 47. | " | Shrub 1-2 ft. - Ssu-ch-t'ung gorge near forests | 10,500 |
| 48. | " | Shrub 6-8 ft. - Ssu-ch-t'ung gorge near spruce forest | 10,500 |
| 49. | " | Shrub 4-6 ft. - Ssu-ch-t'ung gorge near spruce forest | 10,500 |
| 50. | " | Shrub8-10 ft. - Ssu-ch-t'ung gorge near spruce forests | 10,500 |
| 51. | " | Tree 10-15 ft. - halfway slopes Ssu-ch-t'ung gorge | 10,500 |
| 52. | " | Shrub 3-5 ft. - alpine region of Gomba La | 13,500 |
| 53. | " | Shrub 3-5 ft. - alpine region of Gomba La | 13,500 |
| 54. | " | Shrub 2 ft. - alpine region of Gomba La | 14,500 |
| 55. | Hypericum | halfway slope outskirts of Ssu-ch-t'ung gorge | 10,000 |
| 56. | Rhododendron species | Shrub 1 ft. - alpine regions of Gomba La | 15 000 |
| 57. | " | Shrub 2-3 ft. - halfway slope in spruce forest Ssu-ch-t'ung gorge | 15,000 |
| 58. | " | Shrub 1 ft. or less - alpine regions of Gomba La | 15,000 |
| 59. | " | 2-3 ft. - alpine regions of Gomba La | 13,500 |
| 60. | " | 1-2 ft. - alpine regions of Gomba La | 13,500 |
| 61. | " | 2-3 ft. - alpine regions of Gomba La | 13,500 |
| 62. | " | 1 ft. - alpine regions of Gomba La | 14,000 |
| 63. | " | Tree 10-15 ft. - Ssu-ch-t'ung Gorge in spruce forest | 11,000 |
| 66. | Primula species | Alpine meadows below Gomba La | 12,500 |
| 67. | Primula species | Alpine meadows below Gomba La | 12,000 |
| 68. | Meconopsis integrifolia | Alpine meadows below Gomba La | 12,000 |
| 69. | Meconopsis species | Alpine meadows below Gomba La | 12,000 |
| 70. | Rhododendron species | Shrub 10 ft. - in gorge near Ch'ang-P'u-t'ung spruce forest | 11,000 |
| 71. | " | Tree 15 ft. - Western slope Si La Mekong Salwin divide | 12,000 |
| 72. | " | Tree 10-20 ft. - West slope Si La Mekong Salwin divide | 12,000 |
| 73. | " | Tree 20 ft. - West slope Si La Mekong Salwin divide | 12,000 |
| 74. | Primula species | Valley of Serva Lung-pa near divide between Serwa-Do Yon Lung-pa | |
| 75. | Meconopsis blue | Valley of Serva Lung-pa near divide between Serwa-Do Yon Lung-pa | |
| 76. | Primula species | Forest Southwest of Londer to Zhi-dzom La | 11,500 |
| 77. | Primula species | Forest Southwest of Londer to Zhi-dzom La | 11,500 |
| 78. | Primula vinciflora | Forest Southwest of Londer to Zhi-dzom La | 11,500 |
| 79. | Primula species | Alpine meadows of Londer to Zhi-dzom La | 11,500 |
| 80. | Meconopsis species | fruit, spine fruit- Alpine meadows of L. to Z. La | 11,500 |
| 81. | Meconopsis species blue | Alpine meadows of L. to Z. La | 11,500 |
| 82. | Meconopsis integrifolia | Alpine meadows of L. to Z. La | 11,500 |
| 83. | Primula muliensis | in mossy rhododendron forest | 12,500 |
| 84. | Primula species | blue - near top of Si La Pass | 15,000 |
| 85. | Primula species | near top Si La Pass | 15,000 |
| 86. | Meconopsis species blue | near top of Si La Pass | 15,000 |
| 87. | Primula species | In Alpine meadows | 12,000 |
| 88. | Meconopsis species | In alpine meadows | 12,000 |
| 89. | Meconopsis integrifolia | Alpine meadows below Si La | 11,500 |
| 90. | Primula species blue | Alpine meadows below Si La | 11,500 |
| 91. | Primula species blue | Below Si La | 12,000 |
| 92. | Rhododendron species | ft. - Eastern slopes of Si La, Mekong valley | |
| 93. | " | 6 ft. - Pine forest, below Si La | 10,000 |
| 94. | " | 5-6 ft. - high mts., back of Tze-chung. Below Si La | |
| 95. | " | 2-3 ft. - Among rocks back of Tze-chung. Below Si La | 12,000 |
| 96. | " | 6 ft. - in spruce forest below Si La | 12,000 |
| 97. | " | Tree 20-25 ft. - in spruce forest below Si La | 12,500 |
| 98. | " | Tree 9-10 ft. - Fir forest below Si La | 12,500 |
| 99. | " | Shrub 4 ft. - Fir. forest below Si La | 12,500 |
| 100. | " | Tree 6-10 ft. - Fir forest below Si La | 12,500 |
Collected Southwest of the mountains of Londer, West of Zhi-dzom La, Salwin Mekong Divide.
| No. | Elev. ft | ||
| 101. | Rhododendron species | Shrub 2-3 ft. - in fir forest | 11,500 |
| 102. | " | Tree 15-20 ft. - In Abies chensiensis forest | 12,000 |
| 103. | " | Tree 10-15 ft. - In Abies chensiensis forest | 12,000 |
| 104. | " | Shrub 3-4 ft. - Alpine regions of Tzi-dzom La | 14,000 |
| 105. | " | Shrub 1 ft. or less - in grass on top of Tzi-dzom La | 14,500 |
| 106. | " | ? ? ? | |
| 107. | " | Shrub 6-10 ft. - Alpine regions of Zhi-dzom La | 14,000 |
| 109. | " | Shrub 2-3 ft. - Alpine regions of Zhi-dzom La | 14,000 |
| 110. | " | Shrub 2 ft. - Alpine regions of Zhi-dzom La | 14,000 |
| 111. | " | Shrub 2-3 ft. - Alpine regions of Zhi-dzom La | 14,000 |
| 112. | " | Shrub 2-3 ft. - alpine regions of Zhi-dzom La | 14,000 |
| 113. | " | Shrub 2-3 ft. - Alpine regions of Zhi-dzom La | 14,000 |
| 114. | " | Shrub 5-6 ft. - Alpine regions of Zhi-dzom La in firs | 14,000 |
| 115. | " | Shrub 6-8 ft. - Alpine regions of Zhi-dzom La in firs | 13,000 |
| 116. | " | Shrub3-4 ft. - Alpine regions of Zhi-dzom La in firs | 13,000 |
| 117. | " | Tree 9-15 ft. - in spruce forests of Zhi-dzom La in firs | 13,000 |
| 118. | " | Tree 10-15 ft. - in spruce forests of Zhi-dzom La in firs | 13,000 |
| 119. | " | Shrub 2 ft. - margin of forest below Zhi-dzom La | 12500 |
| 120. | " | Tree 15-18 ft. - spruce forest below Zhi-dzom La | 12,000 |
| 121. | " | Shrub 6-8 ft. - spruce forest below Zhi-dzom La | 12,000 |
| 122. | " | Shrub 3-5 ft. - spruce forest below Zhi-dzom La | 12,000 |
| 123. | " | Shrub 5-6 ft. - Spruce forest of Zhi-dzom La | 12,000 |
| 124. | " | Shrub 2-3 ft. - Alpine region of Zhi-dzom La | 14,000 |
| 125. | " | Shrub 2-4 ft. - Alpine region of Zhi-dzom La | 14,000 |
| 126. | " | Shrub 2-5 ft. - Alpine region of Zhi-dzom La | 14,000 |
| 127. | " | Shrub 1/2-1 ft. - Alpine region of Zhi-dzom La | 14,000 |
| 128. | " | Shrub 3-4 ft. - Alpine region of Zhi-dzom La | 14,000 |
| 129. | " | Tree 6-10 ft. - Spruce forest below Zhi-dzom La | 12,000 |
Collected on Eastern slopes of Mekong Salwin divide north of the Si La.
| No. | Elev. ft. | ||
| 130. | Rhododendron species | Shrub 6-8 ft. - in spruce forest | 12,000 |
| 131. | " | Shrub 6-9 ft.- in spruce forest | 12,000 |
| 132. | " | Shrub 1/2 ft. Flowers red - sum. on range among rock | 15,000 |
| 133. | " | Tree 10-15 ft. - in pine forests | 10,000 |
| 134. | " | Tree 8-15 ft. - in fir forest | 13,000 |
| 135. | " | Shrub 4-5 ft. - among rocks and cliffs | 11,000 |
| 136. | " | Shrub 2-3 ft. - near top of the range | 14,000 |
| 137. | " | Tree 8-10 ft. - in spruce forest | 11,000 |
| 138. | " | Shrub 4-5 ft. - near top of range | 13,500 |
| 139. | " | Shrub 6-8 ft. - Alpine region | 13,000 |
| 140. | " | Tree 15-25 ft. - in fir forest | 12,000 |
| 141. | " | Shrub 6-8 ft. - Alpine region | 14,000 |
| 142. | " | Shrub G-8 ft - Alpine region | 14,000 |
| 143. | " | Tree 10-15 ft. - fir forest E. slope Mekong Salwin divide | |
| 144. | " | Shrub 63-8 ft. - fir forest F. slope M. S. divide | 12,000 |
| 145. | " | Tree 6-10 ft. - fir forest E. slope M. S. divide | 12,500 |
| 146. | " | Shrub 3-4 ft. - Alpine regions E. slope M. S. divide | 14,000 |
| 147. | " | Shrub 5 ft. - Alpine regions E. slope M. S. divide | 14,000 |
| 148. | " | Shrub 6-8 ft. - Spruce forest E. slope M. S. divide | 12,000 |
| 149. | " | Shrub 2 ft. - Alpine regions among rocks M. S. divide | 14,500 |
| 150. | " | Shrub 3-5 ft. - Alpine regions among rocks M. S. divide | 14,500 |
| 151. | " | Shrub 2 ft. - Alpine regions among rocks M. S. divide | 14,500 |
| 152. | " | Shrub 1 ft. - Alpine regions among rocks M. S. divide | 14,500 |
| 153. | " | Tree 25 ft. - fir forests E. slope M. S. divide | 11,000 |
| 154. | " | Shrub 6-9 ft. - fir forests E. slope M. S. divide | 13,000 |
| 155. | " | Tree 6-10 ft. - fir forests E. slope M. S. divide | 12,500 |
| 156. | Hemerocallis species | on banks of the Mekong north of Tze Cung | 6,000 |
| 157. | Torreya species | Tree 40-50 ft. - Mountains of Nda-mu-ch'ung | 10,000 |
Collected on Mt. Ju-ch'uan Shan, Mekong Salwin divide Lan-p'ung territory south of Wei-hai. Near the Burma border.
| No. | Elev. ft. | ||
| 158. | Rhododendron species | Uvarifolium tree 30-40 ft. in pine forest | 11,000 |
| 159. | " | Shrub 9-10 ft. - in pine forest | 11,000 |
| 160 . | " | Tree 10 ft. - Spruce forest | 12,000 |
Collected on Mt. Ju-ch'uan-Shan
| No. | Elev. ft. | ||
| 161. | Rhododendron species | Shrub 0-8 ft. - Spruce forest | 11,000 |
| 162. | " | Tree 10-1.5 ft. - Spruce forest | 11,000 |
| 163. | " | Shrub 5-10 ft. - Spruce forest | 11,000 |
| 164. | " | Shrub 6-8 ft. - Spruce forest | 11,000 |
| 165. | " | Shrub 3-4 ft. - Alpine region in fir forest | 13,000 |
| 166. | " | Shrub 4-5 ft. - near summit overlooking Salwin | 14,000 |
| 167. | " | Tree 25-30 ft. - in fir forest | 12,500 |
| 168. | " | Shrub 6-9 ft. - in fir forest | 12,500 |
| 169. | " | Shrub 5-6 ft. - in fir forest | 12,000 |
| 170. | " | Tree 25 ft. - in fir forest | 12,000 |
| 171. | " | Shrub 2-3 ft. - From Zhi-dzom La (no seeds) | 14,000 |
Collected in the mountains west of Whi-hsi and east of the Mekong Yangtze divide on Hsueh-lung Shan (Snow Dragon Mountain)
| No. | Elev. ft. | ||
| 172. | Rhododendron species | Tree 30 ft. - in spruce forest | 11,000 |
| 173. | " | Tree 30 ft. tall 1 ft. in diameter-Spruce forests | 11,000 |
| 174. | " | Tree 30 ft. - Spruce forest | 11,000 |
| 175. | " | Shrub 2-3 ft. - Alpine regions | 13,000 |
| 176. | " | Tree 10-15 ft. - Fir forests | 13,000 |
| 177. | " | Shrub 6-8 ft. - Pine forests | 9,000 |
| 178. | " | Shrub 2-3 ft. - Alpine regions (See heading) | |
| 179. | " | Tree 10-15 ft. - Slopes of Mekong Yangtze divide West Wei-hsi | |
| 180. | " | Tree 15-20 ft. - Spruce forests | 11,000 |
| 181. | " | Tree 15 ft. - Spruce forests | 11,000 |
| 182. | " | Tree 25-30 ft. - Spruce and fir forest | 12,000 |
Collected on Mt. Lo-ping Shan District of Erh-yun Southwest of Li-chian
| No. | Elev. ft. | ||
| 183. | Rhododendron species | Shrub 3-1 ft. flowers red, Curved tubular-Lower, drier slopes of Lo-P'ing Shan | |
| 184. | " | Shrub 6-8 ft. - Pine forest | 10,500 |
| 185. | " | Tree 10 ft. - Spruce forest E. slopes of Lo-p'ing Shan | |
| 186. | " | Tree 10 ft. - Spruce forest E. slopes of Lo-p'ing Shan | |
| 187. | " | Tree 15 ft | 11,000 |
| 188. | " | Shrub 1 ft. - Alpine region | 13,000 |
| 189. | " | Tree 15 ft. - Spruce forest | 12,000 |
| 190. | " | Tree 10 ft. - Spruce forest | 12,000 |
| 191. | " | Tree 15-20 ft. - Spruce forest | 12,000 |
| 192. | " | Tree 15-20 ft. - Spruce forest W. slopes of Lo-p'ing Shan | 12,000 |
| 193. | " | Tree 30-40 ft. forming forests. Trunks 2 ft. diameter | 12,000 |
| 194. | Primula pseudosikkimensis | Alpine meadow top of Lo-p'ing Shan | 14,000 |
| 82. | Magnolia Species | Tree 20-25 ft. Large leaves. - Mountains west of Ch'ang-p'ut'ung Mekong Salwin divide | 12,000 |
| 83. | Magnolia Species | Tree 10-15 ft. - Same location as preceding. | |
| 84. | Magnolia Species | Shrub or small tree 6-8 ft. - Same location. | |
| 85. | Magnolia Species | Shrub or small tree cultivated in the Lamasery of Ch'ang-p'u-tung | |
| 86. | Magnolia Species | Tree 50-70 ft. - Mountains of Sau-chi-t'ung in mixed forests of Birch, Spruce and Fir. | |