INDEX. 



791 



Hesperis pinnatiflda Michx. . 256 



Heterachaena ZoLL 394 



Heterachthia KiTnze 136 



Heterantheliuru IIocnsT 85 



Heteranthera R. and P 138 



dubici (3 ACii.) 138 



Heteranthera graminea Vahl 138 



Heterocaryiim A. DC 440 



Heterocliaeta DC 515, 525 



Heterochloa Desvx 47 



Heterocodon NuTT 494 



Heterodonta Nutt 543 



Heterodraba Greene 263 



Heterogaura Roth 376 



Heterolaena Sch.-Hip 501 



Heteromeris Spach 364 



Heteropleura Sch.-Bip 568 



Heteropogon Pers 47 



Heteroseris Boiss 567 



Heterosteca Desvx 70 



Heterostemum Nutt 381 



HeterotropaMoRRandDECNE 201 



Heteryta Raf 435 



Heuchera Linn 275 



ctmej-iccoiaLiNN 276 



Heuchera cortusa Michx 276 



foliosa Raf 276 



Heuchera hispida Pursh 275 



Heuchera lucida Schlecht. . . 275 



reniformis Raf 276 



richardsonii R. Br 275 



scapigera Moench 276 



viscida Pursh 276 



Heuffelia ScHUR 68 



Hexameria T. and G 493 



Hexonychia Salisb 147 



Heyfeldera Sch.-Bip 507 



Hibiscus Linn 361 



Hibiscus hastatus Michx 361 



laevis Scop 361 



Hibiscus militaris Cav 361 



Hibiscus riparius Pjers 361 



virginicus Walt 361 



Hicoria Raf 177 



amara Raf 178 



minima Britt 178 



ovata Britt 178 



Hieracium Linn 568 



Hieracium auratum Fr 569 



barbatum Nutt 568 



Hieracium canadense Michx. . . 569 



Hieracium corymbosum Fr. . . 569 



f asciculatum Pursh — 569 



gronovii Linn 569 



helianthiifolium Froel 569 



lialmii Spreng 569 



Hieracium longipilum Torr 568 



Hieracium macrophy llu m 



Pursh 569 



prenanthoidesHooK. .. 569 



runcinatum James 568 



scabriusculum Schwein 569 



subnudumFuoEL 569 



Hieracium venosum Linn 569 



Hieracium virgatum Pursh. . 569 



Hierocliloe Gmel 55 



Hierochloa borealis Auct 55 



fragrans R. and S 55 



odorata Auct 55 



Hierocliloe odorata var fragrans 



(WiLLD.) 55 



Himantoglossum Spreng 164 



Hippion SCHM 418 



Hippomane Agii 340 



Hippophae argentea Pursh ... 373 



Hippuris Linn 383 



Hippuris polyphylla Raf 383 



Hippuris vulgaris Linn 383 



Hircuhis Haw 274 



Hisutsuu DC 515 



Hocquartia Dum 201 



Holargidum TuRCz 263 



HolcusR. Br 47 



fragrans Willd 55 



Hololepis DC 499 



Holoschoenus Link 97 



Holosetum Steud 49 



Holostigma G. Don 497 



Holostigma Spach 381 



Holostylis Duchartre 201 



Homalocarp-uS Sciiur 235 



Homalocenchrus Mieg 53 



oryzoides (Linn.) 54 



virginicus (Willd. ) 54 



Homoeatherum Nees 47 



}lomolobus Nutt 323 



Humopappus Nutt 514 



Homostylium Nees 515 



Hoorebekia Cornel 514 



Hoplotiheca Spreng 214 



Hoppea Reich 554 



Hordeum Linn 86 



jubatum Linn 87 



Hordeum murinum var. B. 



Linn 87 



Hordeum nodosum Linn 87 



Hordeum pratense Hubs . 87 



Bra tense var. nodosum 



' Led 87 



pusillum Nutt 87 



secalinum Sciireij 87 



Horlielia Cham, and Schlecht 293 



Horkelia Reich 134 



Hosackia Dougl 331 



pilosaNuTT 332 



purshiana Bentii 332 



unifoliolata Hook 332 



Hostia Moench 567 



Houstonia Linn 478 



Houstoniaangustifolia Pursh 478 



ciliolata Torr 478 



longifoliaGAERTN 478 



Houstonia purpurea var. ciliolata 



(Torr.) 478 



purpurea var. longifoUa 



(Gaertn.) 478 



Howardia Klotzsch 201 



Hubertia Bong 553 



