790 
Helenium canaliculatum Lam. 547 
—commutatum LINK..... 547 
—grandiflora NuTrT....... 547 
——longifolium Sm......... 547 
——montanum NUTT.. .... AAT 
—-—pubescens AIT.......... 547 
—pumilum WILLD........ 547 
—tubiflorum DC..... .... 547 
Heleocharis R. BR. ......... 99 
—acicularis (LINN.).... ... 100 
—cacuminata MUBL........ 101 
Heleocharis compressa SULLIV. 101 
Heiecocharis intermedia (MUHL.) 100 
— ovata (ROTH.)............ 102 
——palustris (LINN.)......... 101 
—palustris var. glaucescens 
(WILLD ic scarwawca'scn 102 
—tenuis (WILLD.).......... 100 
——-wolfit GRAY... .ecceeee 99 
Heleogiton glaucum REICH... 98 
—~pungens REICH..... ... 99 
Heleophylax LEsTIB 
Heliamphora BENTH. .. wee 
Helianthemum PERS........... 
MiG@H Xi dks eteaie esate 365 
—corymbosum PURSH..... 365 
Helianthemun majus (LINN.)... 365 
Helianthemum ramuiiflorum 
MICHK: 22S easnd anya es scet 365 
—rosmarinifolium PursH. 365 
Helianthus LINN............4.% 539 
Helianthus altissimus LINN... 541 
Helianthus annuus LINN....... 543 
Helianthus atrorubens LAm.. 542 
——atrorubens MICHX....... 542 
—crassifolius NUTT....... 542 
Helianthus decapetalus LONN.... 540 
Helianthus diffusus Srms...... 542 
Helianthus divaricatus LINN... 541 
Helianthus diversifolius ELu.* 540 
—doronicoides T. and G.. 539 
—frondosus LINN......... 540 
Helianthus gigantea LINN...... 541 
Helianthus gigas MIcHx...... 541 
Helianthus grosse-serratus MART. 541 
—hirsutus RAF. ........... 540 
Helianthus hispidulus Etu... 540 
—integrifolius NuTT...... 542 
Helianthus laetiflorus PERS..... 542 
Helianthus laevis LINN....... 545 
—laevis WALT............ 540. 
—lenticularis DouaL..... 543 
—macrocarpus DC........ 548 
Helianthus maxnilianiSCHRAD. 6541 
Helianthus maxmiliani var. 
asperrimus GRAY..... 541 
—missouriensis NUTT..... 542 
—missuricus SPRENG..... 543 
—- multiflorus Hoox....... 543 
—ovatus LEHM............ 543 
—patens LEnM............ 542 
Helianthus petiolaris NuTT..... 542 
Helianthus prostratus WILLD. 540 
METASPERMAE OF THE MINNESOTA VALLEY. 
Helianthus rigidus (CASS.)...... 
Helianthus scaberrimus ELt.. 
Helianthus strumosus LINN,.... 
Helianthus strumosus WILLD. 
—tenuifolius ELL......... 
Helianthus tracheliifolius WILLD. 
Helianthus truncatus 
SCHWEIN. ............ 
—tubaeformis NUTT...... 
Helianthus tuberosus LINN...... 
GRAY. ncncdseadion exis 
Helianthus tuberosus PARRY. 
Heliastrum DC .............. 
—album DC......... .... 
Helicotrichum BEss.......... 
Helichroa RAF....... 5 
Heliophthalmum RaF........ 
Heliopsis PERS...........0006. 
Heliopsis laevis var. scabra T. 
ANG Giiscnes, dy s5.0 Gass 
Heliopsis scabra DUN.......... 
Heliosperma REICH.......... 
Helleborine MARTYN......... 
—tuberosus UK........... 
Helleborus trifolius LINN..... 
Helleria FOURN.......... 2... 
Hellmuthia STEUD........... 
Helmia KUNTH «ss se esveeecs 
Helminthosporium Torr..... 
Helonias virginica SIMs....... 
—viridis SIMSs............. 
Helwingiaceae ENDL........ 
He@lIxiie@ REQ. ca cscnce ose tacts 
Hemiambrosia DELP.......... 
Hemicarpha NEES............+ 
——mucrantha (VAHL.) ...... 
Hemicarpha subsquarrosa 
MART... ..- 
Hemixanthidium DELP....... 
Hepatica: Dibba wos a eon ccca 
— acuta BRITT............ 
——hepatica BRITT... ..... 
—triloba CHAIX.......... 
—triloba var. acuta PuRSH 
—triloba var. americana 
DO irre tate Race lhe te pae sy 
Heptas MBISSN............... 
Heracleum LINN.... ....... 065 
Heracleum auritum BIscH.... 
Heracleum lanatum MICHX..... 
Heracleum panaces SPRENG.. 
—spondylium Nurt...... 
Herbichia ZAWADSK.......... 
Heriteria Scur.. ............ 
Hermodactylon PARLAT...... 
Herpestis GAERTN............ 
—callitrichoides HBK.... 
—-rotundifolia PuRsH..... 
Herpetica Rumph............ 
Hersilea: Kv. sis wseesiaens3eess 
