94 



Index 



Loosestrife 53 



Loti Bush 49 



Lotus americanus Bisch 38 



Love Vine 62 



Low Amaranth 25 



Low Vetchling 38 



Ludwigia natans Ell 54 



Lupinus texensis Hook 38 



Lygodesmia texana Green 86 



Lythrum lanceolatum Ell 53 



Madrona 58 



Maidenhair Fern. 5 



Mallow, Cheeses 50 



Malva borealis Wallm 50 



Malva rotundi folia L 50 



Malvastrum americanum Torr 51 



Malvaviscus Drummondii T. and G. 51 



Mammillaria missouriensis Sweet. ... 52 



Many-flowered Aster 78 



Marilaundium hispidum Kuntze 62 



Marilaunidium Jamaicense Kuntze. . . 62 



Marrubium vulgar e L 68 



Marsh Elder 77 



Marsh Fleabane 80 



Marsh Parsley 56 



Marsh Pennywort 57 



Marsh Purslane 54 



Marshallia caespitosa Nutt 82 



Marshallia obovata Beadle and Boyn- 



ton 82 



Marsilea vestita Hook and Grev 6 



Martynia Louisiana Mill 72 



Maximowiczia Lindheimeri Cogn. . . 75 



Mayweed 85 



Meadow Garlic 17 



Mecardonia procumbens Small 71 



Medicago arabica All 39 



Medicago hispida Gaertn 39 



Medicago orbicularis 39 



Medicago sativa L 39 



Megapterium Missouriense Spach. . . 55 



Meibomia 39 



Melampodium cinereum DC 82 



Melia Azedarach L 43 



Melica mutica Walt 14 



Melilotus alba Desv 39 



Melilotus indica All 39 



Menodora heteraphylla Moric 59 



Mentha sp 68 



Mentha spicata L 68 



Meriolix melano glottis Rydb 55 



Meriolix serrulata Walp 55 



Meriolix spinulosa Heller 55 



Mesadenia tuberosa Britton 85 



Mesquite 36 



Metastelma barbigerum Scheele 61 



'Mexican Apple" 51 



Mexican Buckeye 48 



Mexican Hat 82 



Mexican Mulberry 23 



Mexican Persimmon 58 



Mexican Walnut 20 



Milkweed 60 



Milkweed 61 



Milkwort 43 



Mimosa fragrans A. Gray 35 



Mimulus Jamesii Torr. and Gray.... 71 



Mirabilis Jalapa L 27 



Mistletoe 72 



Mitreola petiolata T. and G 60 



Mitrewort. 60 



Mock Pennyroyal 68 



Modiola caroliniana G. Don 51 



Mollugo verticillata L 27 



Monarda dispersa Small 68 



Monarda lasiodonta Small 69 



Monarda Stanfieldii Small 69 



Monkey Flower 71 



Monniera Monniera Britton 71 



Monolepsis Nuttaliana Greene 25 



Morning Glory 62 



Morus microphylla Buckl 23 



Morus rubra L 23 



Morong'ia uncinata Britt 35 



Mountain Cedar 7 



Mountain Daisy 82 



Mountain Laural 40 



Mountain Live Oak 21 



Mountain Pink 60 



Mouse-ear Chickweed 28 



Mouse-tail 30 



Muricauda Dracontium Small 16 



Mustang Grape 49 



Myosotis virginica B. and P 66 



Myosurus minimus L. 30 



Myriophyllum heterophyllum Michx. 55 



Myriophyllum proserpinacoidcs Gill. 55 



Nailwort 26 



Nama hispida Gray 62 



Nama Jamaicense L 62 



Nasturtium officinale R. Br 33 



Nazia aliena Scribn 9 



Nemastylis acuta Herb 19 



Nemophila phaceliodies Nutt . 63 



Nettle 23 



Nicotiana repanda Willd 64 



Nicotiana trigonophylla Dunal 64 



Niggerh'ead 82 



Nightshade 65 



Nimble Kate 76 



Nintooa Japonica Sweet 74 



Nipple Cactus 52 



Nodding Violet 52 



Nolina Lindheimeriana S. Wats. ... 18 



Nolina texana Wats 18 



Notholaena dealbata Kuntze 6 



Nothoscordium bivalve Brittch 18 



Oenothera Jamesii T. and G 55 



Oenothera laciniata Hill 55 



Oenothera laciniata grandis Britton. 55 



Oenothera serrulata T. and G 55 



Oenothera sinuata L 55 



O. sinuata var. grandiflora Heller. . 55 



Oenothera triloba Nutt 54 



Oenothera triloba var. parviflora S. 



Wats 54 



Onagra Jamesii Small 55 



Onosmidium Bejariense DC 66 



Onosmodium Helleri Small 66 



Ophyioglossum Engelmanni Prantle. 5 



Opuntia arborescens Eng 53 



Opuntia leptocajulis P. DC. 53 



Opuntia Lindheimeri Engelm 53 



Opuntia macrorhiza Engelm 53 



Osage Orange 23 



Oxalis corniculata L 41 



Oxalis stricta L. 42 



Oxalis vespertilionis T. and G 41 



Oxytropis Lambertii Pursh 39 



Padus serotina Agardh 35 



Painted Cup "70 



Pale Dock — 



Panicum cognatum Schult 10 



Panicum colonum L 10 



Panicum fuscum Sw 10 



Panicum Helleri Nash 10 



Panicum Lindheimeri Nash 10 



Panicum obtusum H.B.K 10 



Panicum Reverchonii Vasey 10 



