208 
Amorpha fruticosa 174, 165 
glabra 7 
paniculata 7 
texana 165 
Ampelopsis heptaphylla 164 
Amphiachyris dracunculoides 224, 173 
Amsonia ciliata texana 152 
Andrachne phyllanthoides 149, 189, 190 
Reverchoni 
see A. phyllanthoides Reverchoni 
189, 190 
Andropogon avenaceus 30 
—=Chrysopogon avenaceus Benth. 
furcatus 157, 197 
macrourus 55 
scoparius 197 
Torreyanus 197 
Androstephium coeruleum 150, 155 
violaceum 
see A. coeruleum 
Aneimia mexicana 151, 200 
Anemone caroliniana 3 
Antirrhinum antirrhiniflorum 145, 185 
Aphanostephus ramosissimus 173 
as Egletes ramosissima 220 
skirrobasis 173 
as Egletes arkansana 14 
Aphora humilis 54 
see Argithamnia humilis 190 
mercurialina 25, 32 
see Argithamnia mercurialina 
147, 190 
Apios tuberosa 170, 165 
Aplopappus divaricatus 
as Isopappus divaricatus 40, 223 
Hookerianus 
as Isopappus Hookerianus 40 
spinulosus 223 
Apocynum cannabinum 152 
Apogon gracilis 232, 174 
Arabis petiolaris 161 
Arceuthobium americanum 214 
=A. Oxycedri Bieb. 
campylopodum 214 
cryptopodum 214 
—=A. vaginatum Pres] 
Oxycedri 
as A. americanum 214 
vaginatum 
as A. cryptopodum 214 
Arenaria Benthamii 161 
patula 
as A. Pitcheri 33 
MISSOURI BOTANICAL GARDEN. 
Argithamnia aphoroides 154 
humilis 190 
as Aphora humilis 54 
mercurialina 147, 190 
as Aphora mercurialina 25, 32 
Argyrothamnia; see Argithamnia 
Aristida aequiramea 151 
longiseta Hookeri 
see A. purpurea Hookeri 197 
purpurea 151 
purpurea aequiramea 
see A. aequiramea 
purpurea californica 
see A. aequiramea 
Roemeriana 
see A. purpurea 
Aristolochia longifilora 51 
reticulata 52 
Artemisia caudata 231, 174 
dracunculoides 231, 174 
gnaphalodes 174 
ludoviciana 231 
mexicana 17} 
as A. vulgaris mexicana 231 
Asclepias incarnata longifolia 152 
Lindheimeri 42 
==A. longicornu Benth. 
linearis 143, 181 
longicornu 
as A. Lindheimeri 42 
longipetala 
see Asclepiodora viridis 
paupercula 15 
texana 152, 181 
verticillata 152 
Asclepiodora decumbens 152, 181 
viridis 143 
Aspicarpa hyssopifolia 167 
Aspidium macrourum 
see Dryopteris patens macroura 
200 
Asplenium resiliens 200 
Aster carneus 219 
see A. salicifolius 
carneus subasper 219 
see A. salicifolius subasper 
divaricatus 219 
see A. exilis 
Drummondii 39, 219, 174 
dumosus 174 
exilis 174 
as A. diwaricatus 219 
multifiorus 219, 174 
oblongifolius 174 
paniculatus 174 
as A. simpler 219 
phyllolepis 11 
