18a5.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 461 



Onosmodium Bejariense, shady woods. 



Uchinospermum Eedotcskii, var. cwpulatum. 



Evolvulus sericeus, very common throughout summer. 



Convolvulus hermannioides. 



Dichondra repens, roadsides. 



Ipomcea trijida. 



Nama Jamaicense, shade of fences. 



Geranium Carolinianum, valley. 



Euphorhia marginata, common and showy. 



Geum album, river shore. 



Yucca rupicola, very elegant ; in rocky woods. 



Nicotiana repanda (Wild Tobacco), common. 



Solanum nigrum, triquetrum, elceagnifolium, rostratum, abundant. 



Mirahilis longiflora, rare. 



Bowlesia lobata, shade of fences. 



Bouchetia erecta, Mezquit woods. 



Spigelia Lindheimeri, Mezquit woods. 

 Humble but very elegant are two members of the Amaryllis Family, 

 new crops of -which appear after every summer shower, the white- 

 flowered Cooperia Drummondii and the golden-petaled Habranthus Tex- 

 anus. 

 The most common Composites, mostly homely weeds, are : 



Verbesina encelioides and Virginica. 



Ambrosia trijida. 



Franseria tenuifoUa, var. tripinnatifida. 



Xanthium Strumarium. 



Hymenopappus artemisicefolius. 



Gaillardia pulchella. 



Helianthus lenticularis. 



Parthenium Hysterophorus. 



Lepachys columnaris, var. pulcherrima. 

 The last two, particularly, choke the lanes and vacant grounds of the 

 town. 

 Of grasses we find — 

 In pastures : 



Buchloe dactyloides (Buffalo or Mezquit Grass). 



Bouteloua oligostachya, Mrsuta, Texana (Gramas). 



Aristida purpurea, var.? longiseta (Triple-awned Grass). * 



Stipa Neesiana. 



Andropogon saccharoides and scoparius (Beard-Grasses). 

 Along the river : 



Panicum Crus-Galli, var. longisetum (Panic-Grass). 



Uniola, laiifoUa (Spike-Grass). 



Arundo Donax (Cane-Grass). 



Zizania miliacea (Wild Eice). 



