}'M) I'LANT IJKK nK A LAI? A MA. 



()!' tlicst' the liist two arc fiiMiUfiit [M'lciiiiiiils. Ixitli foiitiiird lo the 

 coasl and raiiiiiiiu' t'loiii I'Morida to Mexico, ti'iie siiiid l>'md('i-s with 

 their niiininu- rhi/.oiiies deeply Imi'ied. The sand luirs arc aMiuial> I'loiii 

 the same rc^'ioiis. 



Of tile sedj4"c t'aiiiih' ('///>< ri/.s licontrl, i'aii<^iii<i' Iroiii tlic coast of 

 Florida to Louisiana, and the coiuinoii Ci/jn ru-s xlr!</(>t<i(s^ are frc(|iiciit. 

 Otlu'r herhaeeou.s plants here found are: 



EitpJiorbid jxjli/ijoiiifolia. I'()lij<j(iiH'/l(i (jraciJ'ix. 



Salmla kali. Phi/saUs angmtifolia. 



FroeUchia floridana. Linaria floridana. 



Siphonychia erecta. Baldmnia muUiflora. 



Stphunijrhia diffum. Hettrotheca .vdxtxillaris. 



Paronychia riparin. Oenolhcra humifum. 

 Stipulicida setacea. 



Of these the tirst three range northward to Nmv Eni^land and the 

 Great Lakes. The remainder, except the last two, are tyi)ical littoral 

 sand plants, ranging from the shores of North Carolina, Georgia, 

 and Florida to Louisiana; the last two are perennials of about the 

 same range. 



A small group of low shrubs and sutfrutescent perennials, highly 

 characteristic types, mingle on the sandy lienches above with these 

 assoi'iations of herbs, all of Avhich are at home in corresponding locali- 

 ties in southern Georgia and Florida. Chrymma {Solidagd) pauci- 

 floscidoxd, known as golden rod, is the most frequent among them, an 

 undcrshrul) which is extremely conspicuous Avhen covered with its pro- 

 fusion of golden yellow flowers, and later on account of its densely 

 tufted stems retaining their foliage almost throughout the winter. 

 With these are found t'onradina c(inex.('rnx^ confined to the shores of 

 western Florida and Alabama, with the rare Polygonella polygama 

 and JLHantJit-muni arenicola^ all sparsely diffused along the shore of 

 western Florida. Cuscuta indecora^ not observed in the State outside 

 of this region, is frequently parasitic on the Ch rymma pauciJlosGulosa. 



Xcrophilc pJdrit lU'fi^xlations of the dunes. — On the southern shore of 

 Dauphine Island and on the main shore eastward to Perdido Bay hill- 

 ocks of drifting white sands, thrown up by the unobstructed action of 

 winds and waves, rise above the beach, fre(|uently inclosing shallow 

 swamps and pools between them. On these diuies the live oak makes 

 a more or less scrut)])y growth, frequently not exceeding in size the 

 sand oak {Qvercw^ myri'ifolUi)^ with which it is associated. The latter 

 is an evergreen shrul) l)ranched from the base and from 5 to 8 feet in 

 height. These, with Ceratiola ericoidcx and dwarfed wax myrtles, 

 form an association of xerophile evergreen bushes, augmented by 

 Chryttoma j/auciffo.soul(mi and Polygomilla gracilis., the whole fre- 

 quently intertwined with the stems of the woody creepers Ampelojysis 

 incixd and Smilax aaricrdatd. On the crests and steep sides of the 

 hillocks the so-called sea oat {Uniola 2M7iicidata) forms open patches. 



