Page 
Schrader’s grass _-....--------------.----- S27 
Schrankia 0.2.2.2. 0..22.------------------ dod 
angustata -... 0.2.22 22 eeeeee-------- D4 
brachycarpa.....-.----------------- do4 
horridula 0200 00 oo oe ne eee 54 
Schubertia disticha _...-..........--...--- 325 
Schwalbea americana_....... .-_.---...-.- 1l4 
catalogue ................2-2--2-------- TRS 
Schweinitz, Baron von, fungi...-.---.---. 14 
Scirrhia, catalogue... ..-..---..-.-----. 72 
Scleria baldwinii -_...-. 
ecaroliniana ..........- 
catalogue -.--....-2...- Sle eee eee eee 
ciliata... 22222 ee eee eee. 
elliottii.....2.2222-222.222--22 2-22. ee. .. 
gracilis............ 22... ---2---------.--- 
hirtella_... 0022.02 22 ee ee eee eee 
strigosa ....---.--------.----- +e. 
interrupta _....--..----.-2-----+------- 
Ce 
michausxit -.... 2222222 eee eee 
paucifiora B....-.-.---.---- ------- ---- 
glabra. .-....-- 
reticularis._.....-.. 
torreyana-.---.---.- 
triglomerata. ----.- 
Sclerodermataceae ...- 
Sclerodermataies..... -- 
Scleroderris, catalogue 
Sclerolepis, catalogue - 
verticillata. ........ 
Scleropa, catalogue -... 
Scleropus amarantoides .... 0... .--------- 
catalogue ........-- 
Scolecotrichum, catalogue -...---..--.---- 
Scolymus, catalogue... 
Scoparia, catalogue... -- 
Scorias, catalogue .....- 
Scorzonera pinnatifida 
Scrophularia, catalogue. ..........--.----- 
Scrophulariaceae - -..-- 
Scuppernong grape in Coast Pine belt --- 
Scutellaria campestris 
CANESCENS ....------ 
punctata-._..-. 
punctata ....--- 
catalogue ...---..-- 
hyssopifolia .... 2... .-.-. 
incana..-.-.22-2-2-.-.. 
mollis _.-_..--.--.-- 
parvida mollis .---- 022.2... -- 
pilosa .....----.---- 
TUGOSA 22-2 --- 2-2 -- 
serrata oo 002.0225. 
versicolor —_..-..--- 
WENOP Looe eee 
Shadbush ........------ 
Shallot. .......---.--.-..-- 
Shell hammocks.-__--.- 
Shepherd's purse._..-.-. 
Shittimwood ....-.-.-- 
Shooting star.........- 
Shrubs .... ------------- 
Shrubby plant associations. _-.....--...-- 
Sibthorpia evolvulacea 
ao, 
Sickle pod_.. 2222222222222 ee 
Sicyos, catalogue __..-2.-22.2 222022 2 eee 
| Sida abutilon ........ 2222222222222 ee eee 
acute-fruited ...... 020.2222. 222 ee 
aleeoldes ooo. oo oe ee ce eee eee 
carpinifolia.... 2202.22. 222-2 615, 616 
catalogue —._. ~~~. 2.2.22 2-2 eee eee 
elliottii..-22 220 ee ee 
Elliott's ...022..0222-2 2222-2 ee. 
glabra . 22.2. 2222 eee eee eee ee 
gracilis. 000.22. eee eee ene ee ee . 
hisplda. ....-. 2222-2 2-22-22 ee -- 
rhombleaf .._.... 2222-22. 22 eee eee 
rhombifolia__.... 222-22 2222 eee 
615 
spinosa... 2.2. 222222 ee eee eee. 55, 188 
spiny. ---222 2. 22 ee ee eee eee 
velvety -2 00.22.02 222222 eee eee 
| Side-saddle flower ____.... 222-222. le. 
Siderowcylon lanuginosune ....2. 0222.2. --- 
yciOides (0. . eee cece ee wee eee wee eee 
Siegeshechia occidentalis 2.02.22... 22 eens 
Sieglingia...... 22.22. -22--..--..2.--..---- 877,378 
americana ...... 2.22.22 202222 2-2. 8 
catalogue _.....-----. 2-2-2 222-2 eee 37 
chapmani ....-.-.---- 222-2. ee eee 120 
poaeformis -....-----222.---222--2-.--- 119 
purpurea -..... 22-2.. e e eee eee 129 
seslerioides .... .-_...- 73, 104, 189, 191, 255, 257 
Silene caroliniana -... ..--.22. 2.222.222. 73 
catalogue .... 022.2222. eee eee eee 
GUC oo ne oe ee ee eee eee 
ovata... -2 2 eee eee ee eee eee 
pennsylvanicd ..2- 02 222222 ve eee eee 
regia -......--2-2 22 22. 02-22. eee eee 
rotundifolia ......2---...2222. 02.2222. 73 
stellata... 2220.22.22... 2-22 ee eee eee 63 
virginica......22.... 2222222222 eee 67,259 
Silk tassel tree _...0 2.222.222 22 -e eee 834 
Silk tree...... 22.2. eee ee ee eee 136, 553 
Silphium......-.. 22.0222 eee 14 
asperrimum ......---.-.---..-.--- 64, 108, 793 
asteriscus............----....--.. 190,793, 794 
angustatum -...-.--.-2---.-------- 115 
dentatum ......-..------------.---. TY4 
laevicaule -..0 2222 eee ee eee ee 794 
scabrunt.....--.-------------------- = 794 
eatalogue _.....-------.---- 22-22-22 eee 792 
compositum ...... -------------- 62, 66, 74, 244 
michauNli-_-....---.-.-.-.---------- 792 
ovalifolium .......2-222 222222 2222. 792 
reniforme......---.-.-..---.-.----- 792 
dentatum ......---. 2-22-22. 2. 22-22. ---- 64 
gatesil....-....22..2-2- 22-2. -2 22 2222-2 ---- T4 
QUEM OP UU. 00 oe we nee ee ene ee eee 792 
integrifolium -.....-..22-.222-----.---- 
intermedium ..............---.-----.-- 
laciniatum .............-....--.... 48, 104, 108 
laevigatum ........---..------. 64, 74, 108,190 
mohril .--.-.-.----. 2--22. 2-2... eee 14, 794 
pumiluin ....2- 2.22.22 2-2-2 eee ee 
radula ooo oo .. 
795. 
793 
seaberrimum .......-... .----.-.---. 04,798 
scaberriM Wn 0.02 2 eee wee wee eee 
SP... Lee. eee eee eee eee eee 
terebinthinaceum -_....--...---------- 
ternifolium ......22---.-.-------------- 
793 
trifoliatum ..___.--.. ....-..---.-.. 64,74, 104 
latifoliwim .. 0.222.222.5222 eee ee eee 
794 
