X ILLUSTRATIONS, 



Page. 



Fig. 148. P. xalapense strictirameum 161 



149. Distribution of P. xalapense strictirameum 161 



150. P. ciliatum 162 



151. Distribution of P. ciliatum 163 



152. P. polycaulon 163 



153. Distribution of P. polycaulon 164 



154. P. strigosum 164 



155. Distribution of P. strigosum 165 



156. P. aciculare 167 



157. Distribution of P. aciculare 168 



158. P. chrysopsidifolium 168 



159. Distribution of P. chrysopsidifolium 169 



160. P. consanguineum 169 



161. Distribution of P. consanguineum 170 



162. P. angustifolium 171 



163. Distribution of P. angustifolium 171 



164. P. fusiforme 172 



165. Distribution of P. fusiforme 173 



166. P. arenicoloides 173 



167. Distribution of P. arenicoloides 174 



168. P. ovinum 175 



169. Distribution of P. ovinum 175 



170. P. neuranthum 176 



171. Distribution of P. neuranthum 176 



172. P. bicknellii 177 



173. Distribution of P. bicknellii 177 



174. P. calliphyllum 178 



175. Distribution of P. calliphyllum 178 



176. P. nudicaule 179 



177. Distribution of P. nudicaule , 179 



178. P. microcarpon 182 



179. Distribution of P. microcarpon 182 



180. P. nitidum. .' 184 



181. Distribution of P. nitidum 184 



182. P. multirameum 185 



183. P.annulum 186 



184. Distribution of P. annulum 186 



185. P. mattamuskeetense 187 



186. Distribution of P. mattamuskeetense 187 



187. P. clutei 188 



188. Distribution of P. clutei 188 



189. P. boreale 189 



190. Distribution of P. boreale 190 



191. P. dichotomum 191 



192. Distribution of P. dichotomum 192 



193. P. barbulatum 193 



194. Distribution of P. barbulatum 194 



195. P. yadkinense 195 



196. Distribution of P. yadkinense 196 



197. P. roanokense 196 



198. Distribution of P. roanokense 197 



199. P. caerulescens 197 



200. Distribution of P. caerulescens 198 



