a3) 
ADDITIONS AND CORRECTIONS 
Page 13 
274a var. Sonnei Henderson 
195a occidentalis Henderson 
Page 17 
542 read (Micheli) not (Michx.) 
Page 18 
623 read Halepense 
Page 49 
2898a longifolium Osterhout 
29i7a rubrum Osterhout 
Page 50 
2988a Masseyi C. W. Hyams 
Page 54 
Sisyrinchium 1287 
Strike out 3300 and 3308 
Page 55 
Hydastylus (1287) 
(Sesyrenchium in part) 
3350a borealis Bicknell 
3350b brachypus Bicknell 
Page 64 
3998 and 3999, not 4098 and 4099 
Page, 73 
4707a Tetonensis Elias Nelson 
Page 78 
5017 laciniata 
Page 79 
5102a Treleasei Bush 
Page OE 
5217a var. laetus Greene 
5236a var. Deforesti Davis 
5261a McCallai Davis 
5286 pedatifidus 
Page 86 
5591a var. papilliferum Henderson 
5638a perplexum Henderson 
5638b pubicarpum Aven Nelson 
Page 90 
5866a Yellowstonensis Aven Nelson 
5921a densicaulis Aven Nelson 
3350¢ Californicus (Ker) Salisb. 5922a divaricarpa Aven Nelson 
(S. Californicum Ait. f.) 5924a elegans Aven Nelson 
3350d Elmeri (Greene) Bicknell 5927a fruticosa Aven Nelson 
(S. Almerz Greene) 
3350e longipes Bicknell 
3350f rivularis Bicknell 
Page 56 
3424a constricta Small 
3431a Reverchoni Small 
3434a triloba Small 
Page 58 
3541 instead of 3341 
3554a bella Piper 
Page 59 
3653a subcoerulea Piper 
Page 63 
3898a inequalis Stokes 
Pace 91 
5943a lignipes Aven Nelson 
5951a pendulocarpa Aven Nelson 
Page 94 
6134 (Coult. & Fisher) Coult. 
6158a cognata Elias Nelson 
Page 95 
6256 var. Oregonensis 
6258a saxicola Elias Nelson 
Page 97 
6384a saximontana Elias Nelson 
Page 104 
6892a grosse-serrata Elias Nelson. 
