126 PLANT LIFE OF ALABAMA. 



virginica. A host of Cyperaceae thrive in the shade of these swamps, 

 as 



Eleocharis tuberculosa. 1 Carex leptalea. 1 



Eleocharis adeuXttrii. Carex sterilis. 1 



Rhynchospora miliacea. Carex baileyi. 



Rhynchospora axillaris. 1 . Carex intumescens. 1 



Rhynchospora fascicularis. Carex folliculata australis. 



Rhynchospora gracilenta.* Carex elliottii. 



Dulichium arundinaceum. 1 Carex turgesccns. 

 Carex atlantica. 1 



With these grow 



Pinguicula planifolia, Habenaria repens, 



Bartonm virginica, 1 Habenaria blephari glottis, 1 



Habenaria clavellata, 1 Habenaria cristata, 1 



truly characteristic for these tree-clad pine-barren swamps, prefer- 

 ring their open borders. Here also are found 



Hypericum fasciculatum. Pogonia divaricata. 1 



Rhexia ciliosa. l A ster paludosus. 



Limodorum tuberosum. Aster purpuratus. 



Pogonia ophioglossoid.es. 1 



Arundinaria tecta, formerly abundant in these swampy woods and 

 in the hammocks, is now greatly reduced by the continued browsing 

 of cattle. 



Ilydrophytic herbaceous plant associations. One group of these 

 belong to the open pine-barren swamps and ponds with a sour oozy 

 soil filling the frequent depressions in the coast plain. In the stag- 

 nant water of the ponds flourish 



Castalia odorata. Potamogeton diversifolius. 



Brasenia peltata. Ulricularia inflata. 



Limnanthemum lacunosum. Spirodela polyrhiza. 



Cabomba caroliniana. Lemna minor. 



Nymphaea advena. Lemna trisulca. 



With Castalia odorata occurs its variety with rose-purplish flowers. 

 These all, with floating stems and leaves, form with Eleocfiaris inter- 

 stincta, E. mutata, and E. cellulosa a mingling of the Hydrocharidian 

 and Limnsean classes of hydrophytes. To the latter belong also the 

 following types which inhabit the shallower pools and ditches and root 

 in loamy silt free from peat: 



Sagtitaria mohrii. Eleocharis vivipara. 



Sagittaria platyphylla. Eleocharis camptotricha. 



fiagittaria chapmani. Cyperus compressus. 



Utricularia gibba. Cyperus haspan. 



Utricularia biflora. Juncus repens. 



The following prefer the boggy borders of such pools: 



Tillaea simplex. Eryngium prostralum. 



Oldenlandia bosdi. Eryngium ovalifolium. 



Oldenlandia littoralis. Pluchea foetida. 



1 Found also in the Carolinian area. 



