792 
Hudsonia tomentosa NUTT..... 
Hugueninia REICH........... 
Hulthemia Dum.............. 
Humulus LINN .... 6. eee ee 
Humulus americanus Nurt.. 
Humulus lupulus LINN........ 
Hydastylus SALISB............ 
Hydatica NECK............... 
Hydrangeaceae LINDL........ 
Hydrastis LINN. .............. 
— canadensis LINN.... .... 
Hydrocera BLUME............ 
Hydroceratophyllum Loca 
Hydrocharitaceae.. .. .... 
Hydrochloa HARTM........... 
—fluitans Host........... 
Hydropeltis-L. C. Ricw....... 
-——purpurea MICHX........ 
Hydrophyllaceae........... 
Hydrophyllaceae BAILL....... 
Aydrophyllum LINN. .........4 
—appendiculatum Micwx.. 
Hydrophyllum trilobum Rar. 
ee virginianum 
FEIN, sladaucint vensigageecogacea tiara 
Hydropyrum LINK............ 
——esculentum LINK....... 
Hydroschoenus Zou. et MoRR 
Hylas BIGELé + ss .sesasowss ones 
Hylogeton SALISB............. 
Hymenachne BEAUY.......... 
Hymenatherum Cass....... oe 
Hymenocalyx ZENK........... 
Hymenochaeta BEAUV........ 
Hymenochaeta NEES.. ....... 
HymenochloaT. andG........ 
Hymenolytrum NEES......... 
Hyoseris amplexicaulis Micux 
——biflora WALT........... 
——prenanthoides WILLD... 
Hyparrhenia ANDERS......... 
Hypecusa ALEF............... 
Hyperanthera dioica VAHL... 
Hypericaceae............... 
Hypericum SPACH............ 
Hypericum LINN..........2.-+ 
Hypericum aiplexicaule LAm. 
—ascyroides WILLD....... 
Hypericum ascyron LINN....... 
Hypericumcampanulatum 
WALT. 
Hypericum canadense LINN.... 
Hypericum emarginatum LAM 
——foliosum JACQ......-.... 
Hypericum gymnanthum EN- 
GELM and GRAY....... 
Hypericum macrocarpum 
MICHR ins sesinncee czas 
Hypericum maculatum WALT... 
Hypericum micranthum Ouors 
METASPERMAE OF THE MINNESOTA VALLEY. 
Hypericum moranense HBK.. 362: 
Hypericum mutilum LINN...... 363 
Hypericum mutilum var. gym- 
nanthum GRAY....... 363 
— parviflorum WILLD..... 363 
— pauciflorum HBK..... 362 
Hypericum prolificum LINN.... 363 
Hypericum punctatum Lam.. 363 
-—pyramidatum AIT....... 363 
—quinquenervium WALT. 363 
—stellarioides HBK.. .... 363 
—thesiifollum HBK....... 362 
—virginianum WALT..... 363 
Hypericum virginicum LINN.... 364 
Hypogynium NEEs........... 47 
Hypopitys Scop......... .... 405 
Hypoporum NEES............. 105 
—verticillatum NREEs..... 105 
Hypowis LINN. ....-.6. ee eee ee 159 
Hypoxis carolinensis Micux.. 159 
Hypoxis erecta LINN.........-- 159 
Hyssopus anisatns NuTT...... 449 
—discolor DESF......-.... 449 
—nepetoides LINN........ 450 
Sern I Terie @ Peas 
WAGED: acicnis Fi etroavaee 449 
Hysterionica BAILu....506, 507, 514 
Hysterophorus VAILL... 0. ee. 533 
Hystriz MOENCH.............. 89 
— hystrix (LINN.)........-- 89 
Hystrix patula MoENCH. .... 89 
I 
Ibidium SALISB............... 170 
Ictodes BIGEL...............- 131 
—foetidus BIGEL.... .... 131 
Idianthes DEsvx ............ 567 
AER. ASIN 9 eects paca tains Hah ees 349 
—verticillata (LINN.)....... 350 
Tlicineae ENDL............... 349 
Tllecebraceae ...............5. 219 
Ilysanthes RAF...... 6.620.600 464 
—-gratioloides (LINN )...... 464 
Ilysanthes riparia RAF....... 464 
Impatiens LINN .......... 2406. 354 
——aurea MUHL............ 355 
—hbiflora WALT........... 354 
Impatiens fulva NuTtv....... 354 
—maculata MUHL........ 354 
—nolitangere MICHX..... 355 
—-nolitangere var,B.Micux 354 
—pallide NuTr........... 355 
Imperatoria TOURN.......... 390 
—lucida NUTT............ 392 
Intybellia CAss............... 567 
Intybellia MoONN. ............ 567 
Intybus FR.............00 0005 567 
Iodanthus hesperioides T, and 
Ginn, Gada @demiles oBe ss 256 
Iodopappus ScH.-BIP......... 499 
Toniris KLAGTR so e205 eecuecees 160 
Tpomed INN: 29sxasscehia sca bos 427 
Ipomea nyctalea LINN........ 434 
LPO RICH. wore cosience a wuanccanes 102 
