74 PLANT LIFK OK AI-AHAMA. 



Aiikiiil;' tin- liirLfi'ly pi-cddiuiiintiiiL;' ( Onipositar tall i-usinwccds and 

 (•<tai">f ^iinllow crs arc conspicuous, paiiicnlarly (In i'oniici-, wliicli 

 prcsriii a numlici- ot" tyi)cs riiridy or not at all ohscrNcd in tlic State 

 outsid(> of this siil)di\isi()n; for example, SHj)/uiiiii inohr'ii and X. 

 gatei<}!^ both l<iio\\n i'roni Cullman County; *V. frlfolaitiifii^ ranj^inu- 

 from the plains of tlie Ohio Valley to the Central Prairies rej^ion; S. 

 liti I'tijuiunu IL'lldiiflnis xehineiiiltzl!. and //. (jhtncini^ from the lower 

 mountains of South Carolina and (ieoriiia. and .S'. cnnipfmtitni^ abund- 

 ant throughout the reyion. The follow inu- are frequent in dry thin 

 soils all over the Mountain rejj^ion. some extendinj^" all over the State: 



Ileliunthus uiroruben^s. Lactuca hirmla. 



Heimnthus hirsutus. fMduca sagittaefolitt.^ 



Jleliatiihus microcephalus. Nabalus fraserl.'^ 



Ilii'tanthus divaricatus. Lechea racemulosd. 



llelwpsis helianthoideti. Lechea legtjetlli. 



Parthen'mm integrifolium. Koellia pi/OKiiilliriiKjiiles. 



Sericocarjnis asteronles. Blejihilia clliuld. 



Aster divaricahis. Monarda fiatidond. 



Eupaturium sexsilifulium. Monarda hradhur'iarut. 



Solidayo caesia.^ Dasy stoma viryiniia.^ 



Solidago erecta. Gerardia tenuifoUa.^ 



Chr-ysopsis mariana.^ Physalis virginkiiia. 



Brauneria ])urpure((. Physalis pubtscens. 



Rudbeckia Jiirtn.^ Physalis jmiiiiosa. 



Rudbeckia spatltulata.^ Sabbatia boy ki nil. 



Coreopsis grandiflora.^ Thaspium aureuin Irifo/ldhnn.^ 



Coreopsis pubescens.^ Oxulis recurva.^ 



Coreopsis auriculata} 2\agia urticaefolia.^ 



Carduus virginicus. Meibomia (many species) . 



Andropogon virginicus. ' Lesped^za (many species) . 



Vicia caroliniana} and buffalo clover, Trifolium reflervmn., are fre- 

 qucnt on these taT)le-lands, and Latkyru)^ venosus in Ala})ama is con- 

 tined to them. 



Strictly mewphile herhaceoivs plant a.s.sociati(ms. — Ferns abound in 

 the shade of the forests. Characteristic species are: 



Adiantum pedatum. Botrychium obliquum.^ 



Asplenium plalyneuron.^ Dryopterls novehor a census. 



Pltegopteris hexagonoptera. Dryopteris marginata. 



Botrychium lirginicum.^ Dryopterls acrostirjioides.^ 



Ai<2}l€niimiciii(f list i folium., which is most frequent in the Ohio valley, 

 occurs very rarely. Of grasses and sedges Muhlenbetyia diffam forms 

 dense plots, and the following prefer the shade of woods: 



Brachyelytrum ereclum. Poa autumnalis.^ 



Festuca nuta^ns. Carex laxiflora.^ 



Festuca .fhortii. Carex laxiflora varians. 



Poa sylvestris. Carex laxiflora patulifolia. 



^ Occurs also in the Louisianian area. 



'■'Nabalus Hook., as a strictly American genus, has been reinstated, differing in 

 habits of growth and distribution and essential morphological characters from Pre- 

 nanthes, with which it was connected by later authors, but which is exclusively con- 

 fined to Europe. 



