Marchantia.... 
Medicago_ 
Megarhiza._ 
Menispermum. 
Mentha. 
Mentzelia. 
Menziesia ..... 
Micromeria.... 
Mimulus. 
Moehringia ... 
Monarda. 
Monardella.... 
Moneses......, 
Monotropa .... 
Morus. 
Mulgedium.... 
Musenium. 
Myri'ca.. 
Nardosmia.... 
Nasturtium.... 
Navarretia .... 
Negundo...... 
Nemophila.... 
Nuttallia_ 
Nuphar__ 
Obione. 
Oenanthe. 
Oenothera_ 
Onosmodium... 
Opuntia. 
Oreophila.. 
Orohus..._ 
Orthocarpus... 
Osmorrhiza.... 
Oxalis_ 
Oxybaphus .... 
Oxytropis. 
Panicum ...... 
Pentalophus_ 
Pentstemon.... 
Petalostemon.. 
Peucedanum... 
Phalaris___ 
Phelypcea_ 
Philadelphia... 
Phlox.._... 
Phacelia.. 
Phyllospora ... 
Physalis___ 
Pilea. 
Pinus......... 
Plantago. 
Platan thera.... 
Plectritis...... 
Poa... 
Podophyllum.. 
Polemonium... 
Polygala. 
Polygonatum .. 
Polygonum.... 
Page. 
71 
Polvpodium_ - _ _ 
58 
Polypogon.. _ ______ 
61 
Populus_ 
40 
' Potentilla____ _ 
45,54,67 
Prairies of western region.. 
. 43,51 
Prosartes.... _ 
66 
67 
Pteris____ 
54, 67 
Pterospora..........__ 
.. 41,57 
Pulsatilla___ 
46 
Pvrola____ 
67 
Pyrus......... 
66 
Onerous_ _ 
66 
Ranunculus ____............._........ 
47 
Reboulea___ _ 
.45,54,65 
Region west of mountains__ 
43 
Rh am nns_ 
69 
Rhododendron_ _ ___ 
64 
Rhus_____ 
.40,51,56 
Ribes ....... 
68 
Rosa_______ 
41 
Rubus____ _ 
68 
Rumex_______ 
59 
Ruppia........ 
56 
Sagina ..._................................... 
47 
Sagittaria____ 
62 
Salicornia_____ 
,.43,51,60 
Salix____ _ 
46 
Saltwater................ ......... .... 
43 
Sambucus ......____ 
57 
Sanguisor'oa_____ _ 
58 
Sanicula....... 
. 54,67 
Saxifraga__ _ 
43 
Scenery______ 
,. 41,57 
Scirpus___ _ 
46 
Schrankia ............ 
42 
Scrophularia____ 
49,71 
Scutellaria___ 
46 
Sedum.... ..... 
45,54 
Senecio______ 
42 
Sesleria ......... 
63 
Shepherdia__.... ............................ 
48 
Shrubby undergrowth. 
45,54 
Sidalcea______ _ _ 
62 
Silene........... 
46,54 
Silphium ___............__....___.... 
68 
Sinapis_................................._ 
71 
Sisymbrium______ 
46 
Sisyrinohium_ 
47 
Smilacina ..........................._..... 
69 
Smilax_,___ _____ 
45 66 
Solanum_______ 
69 
Solidago .... ...... ...... ........ .... .... ......' 
64 
Son eh ii s_______ . ____ 
48 70 
Sophora______ _ __....... 
40 
Sparganium_.........____...._ 
54 68 
Spartina...................... __-_ 
41 
Rpecularia___........ .... ............. 
48 
Spergularia.......................... .......... 
,. 47,68 
Spiraea.-. 
Page. 
71 
71 
47,69 
1,51,59 
19 
70 
42.58 
71 
66 
40 
54.66 
60 
68 
, 51,55 
49 
18 
57 
66 
41 
43.61 
43,60 
43,60 
47.68 
69 
57 
48.69 
68 
48,69 
36 
64 
43 
43.62 
62 
38 
70 
42 
67 
46.67 
62 
45 
48 
47.68 
30 
51,57 
57 
44 
41 
40,56 
48.69 
48, 69 
48 
68 
,51,64 
65 
42 
69 
48 
45,66 
56 
51.59 
