66 



4123 Watsoni T. & G. 



4124 Wrightii Torr. 



4125 sxibscaposa Wats. 



Bumex 3088 



4126 Acetosa L,. 



4127 Acetosella L,. 



4128 altissimus Wood. 



4129 Arizonicus Britton 



4130 Berlandieri Meisner 



41 3 1 Brittanica 1,. 



4132 bucephalophorus h. 



4133 conglomeratus Murray 



4134 crispus L. 



4135 densiflorus Osterhout 



4136 fascicularis Small 



4137 Floridanus Meisner 



4138 Geyeri {Meisner) Trelease 



4139 hastatulus Muhl. 



4140 hymenosepalus Torr. 



4 1 41 lacustris Greene 



4142 Langloisii Small 



4143 obtusifolius h. 



4144 occidentalis Wats. 



4145 nanus (Hook.) Trelease 



4146 Patientia L,. 



4147 paucifolius Nutt. 



4148 persicarioides L. 



(i?. maritimus of Gray's 

 Manual, not Iv.) 



4149 pulcher L. 



4150 salicifolius Weinm. 



41 5 1 salinus Aven Nelson 



4152 sanguineus L,. 



4153 spiralis Small 



4154 subalpinus Jones 



4155 venosus Pursh 



4156 verticillatus L. 



Oxyria 2089 



4157 digyna (I^.) Camptd. 



Polygonum 3094 



4158 alpinum AUioni 



4159 Alaskanum Small 



4160 foliosum (Keller) Small 



4161 amphibium L,. 



4162 arifolium ly. 



4163 Austinae Greene 



4164 

 4165 

 4166 

 4167 



4168 

 4169 

 4170 

 4171 

 4172 

 4173 

 4174 



4175 

 4176 



4177 



4178 



4179 

 4180 



4181 

 4182 

 4183 

 4184 



4185 

 4186 

 4187 

 4188 

 4189 

 4190 

 4191 

 4192 



4193 

 4194 



4195 

 4196 



4197 

 4198 

 4199 

 4200 

 4201 

 4202 



4203 

 4204 

 4205 

 4206 

 4207 

 4208 



aviculare L. 

 Bellardi Allioni 

 Bidwelliae Wats, 

 bistortoides Pursh 

 {^P. Bistorta of authors, not L.) 



linearifolium (Wats.) Small 

 Bolanderi Brewer 

 Californicum Meisner 

 camporum Meisner 

 Careyi Olney 

 cilinode Michx. 

 Convolvulus Iv. 

 cristatum Engelm. & Gray 

 Davisiae Brewer 

 Douglasii Greene 



montanum Small 

 dumetorum 1,. 

 emersum (Miclix.) Britton 

 {P. Muhlenbergii Wats.) 

 Engelmanni Greene 

 erectum Iv. 

 exsertum Small 

 fusiforme Greene 

 Greenei Wats. 

 Hartwrightii A. Gray 

 hirsutum Walt. 



glabrescens Meisner 

 Hydropiper Iv. 

 hydropiperoides Michx. 



Macounii Small 

 incarnatum Ell. 

 Islandicum Meisner 

 Kelloggii Greene 

 lapathifolium L. 



incanum (Schmidt) Koch 



nodosum (Pers.) Small 

 littorale Ivink 



Sitchense Small 

 longistylum Small 

 maritimum L,. 

 Meisnerianum Beyrichianum 



(C. & S.) Meisner 

 Mexicanum Small 

 minimum Wats, 

 minus Hudson 

 Newberryi Small 

 Nuttallii Small 

 Opelousanum Riddell 



