Jewel-weed, 1105 

 Joe-Pye weed, 1603 

 Johnson grass, 338 

 Joint-tail, 338 

 Joint vetch, 1065 

 Jointed rush, 631 

 Juglandiaceae, 769 

 Juglans, 772 

 major, 772 

 microcarpa, 773 

 Stewartii, 773 

 rupestris, 112) 

 Jump seed, 810 

 Juncaceae, 604 

 Juncaginaceae, 129 

 Juncus, 606 



acuminatus, 637 



sphaerocephalus, 637 

 acutus 



sphaerocarpus, 615 

 albescens, 631 

 aristulatus, 624 

 arizonicus, 621 



curtiflorus, 621 

 articulatus, 631 

 badius, 634 

 bahicus, 610, 612 

 litt oralis, 610 

 mexicanus, 612 

 montanus, 610 

 biflorus, 624 

 brachycarpus, 637 

 brevicaudatus, 628 

 briinnescens, 628 

 bufonius. 615, 618 

 halophilus, 618 

 castaneus, 631 

 caudatus, 631 

 confusus, 618 

 Cooperi, 615 

 coriaceous, 612 

 debilis, 643 

 dichotomus, 621 

 diffusissimus, 643 

 Drummondii, 610 

 Dudleyi, 621 

 effusus, 606 

 brunneus, 612 

 exiguus, 612 

 solutus, 612 

 Elliottii, 645 

 ensifolius, 627 

 filiformis, 610 

 filipendulus, 624 

 interior, 621 

 arizonicus, 621 

 neomexicanus, 621 

 longistylis, 624 



scabratus, 627 

 macrophyllus, 627 



marginatus, 624 



paucicapitatus, (tlA 



setosus, 624 

 megacephalus, 637 

 Mertensianus, 634 

 mexicanus, 612 

 neomexicanus, 621 

 nodatus, 645 

 nodosus, 634 



meridianus, 634 



texanus, 637 

 parous, 628 

 polycephalus, 640 

 repens, 621 

 Roemerianus, 615 

 saximontanus, 628 



brunescens, 628 

 scirpoides, 640 



meridionalis, 640 

 sphaerocarpus, 618 

 tenuis, 618, 621 



anthelatus, 618 



Dudleyi, 621 

 texanus, 634 

 Torreyi, 631 

 Tracyi, 628 

 trigonocarpus, 628 

 validus, 643 



fascinatus, 640, 643 



validus, 643 

 xiphioides, 627 

 Jungle-rice, 326 

 Jussiaea, 1175 

 decurrens, 1178 

 leptocarpa, 1181 

 Michauxiana, 1184 

 repens 



glabrescens, 1181 



peploides, 1181 

 suffruticosa, 1181 



ligustri folia, 1181 



octofila, 1181 

 Uruguay ensis, 1184 

 Justice-weed, 1605 

 Justicia, 1362, 1365, 1531 

 americana, 11, 1362, 



1531 

 lanceolata, 1531 

 ovata 



lanceolata, 1533 



Kentucky bluegrass, 189 

 Kickxia, 1490 



Elatine, 1490 

 King-nut, 777 

 Kitten-tails, 1489 

 Knotgrass. 298 

 Knotweed, 807, 816 



family, 795 



floating-, 820 



Kochia, 845 

 alata, 845 

 americana, 846 



vestita, 846 

 scoparia, 845 

 culta, 845 

 subviljosa, 845 

 Korean bush clover, 1068 

 Kosteletzkya, 1117 

 al time folia, 1117 

 virginica, 1117 

 althaefolia, 1117 

 Kyllinga, 415, 416 

 brevifolia, 423 

 odorata, Alli 

 pumila, 423 



Labiatae, 1407 



Lace-lip spiral-orchid, 732 



Lachnocaulon, 593 



anceps, 5, 593 

 Lactuca, 1698 



canadensis, 1701 



floridana, 1703 



graminifolia, 1701 



pulchella, 1701 



sativa, 1698 



Serriola, 1698 



villosa, 1703 

 Ladies' tresses, 5, 723 



Florida-, 730 



grass-leaved-, 730 



green-lip-, 727 



hooded-, 724 



nodding-, 727 



spring-, 732 



Texas-, 730 



western-, 724 

 Lady fern, 67 

 Lady's thumb, 830 

 Lake cress, 979 

 Lamb's-quarters, 855 

 Lampazo amarillo, 902 

 Lampazos, 902 

 Lance-leaved violet, 1152 

 Lance-leaved water-willow, 



1531 

 Lanceleaf cottonwood, 739 

 Lantana, 1400 



horrida, 1400 



Texas-, 1400 

 Lanten, 1536 

 Laportea, 791 



canadensis, 791 

 Large buttercup, 939 

 Large marsh-pink, 1315 

 Larkspur, 918 

 Larrea, 988 



densiflora, 1045 



1757 



