68 BOTANICAL GAZETTE. 



short peduncle usually with a few gland-bearing bristles, its calyx lobes erect or 

 slightly spreading, at last deciduous, bristly glandular, the outer somewhat pinnati- 

 tid. Dry open woods and prairies. 



Rihes aureum, Pursh. Limestone cjifts. 



Sax'ifragd Virginiensis, Mx. The plant occun-iug in Atoka county is low (1-3 

 Inches high), the capsule mostly 3-beaked, flowers clustered even in fruit. Wetprairiesi 

 common. The normal form occurs on Arkansas river. 



Seduiii ,sp((rsiflo)'u/ii,lSutt. Sulphate flats, common. Annual. 



Gmira sinuata, Nutt. Sulphate flats. 



(Eiwthera rhombipetala, Nutt. Arkansas river. 



(Enothera speciosa, Nutt. Rich prairies, whether limestone or not. Rather com- 

 mon. 



(Enothera serrulata, Nutt. Prairies, rare. 



(Enothent linifolta, Nutt. Sulphate flats. 



3[entz('lia oligosperma, Nutt. Limestone cliffs. 



Mammillni-ia NtitUdlii, Engelm. Dry hills in prairies. 



Melothria pendula, L. Fort Smith. 



Daucus pusillus. Sulphate flats and diy woods. Common. 



Trepomrjms ^thusa, Nutt. Has the strong odor of carrot throughout. Fruit 

 large. Thickets, not uncommon. 



PolyUtmia JVuttalln, DC. Prairies, common. 



Peucedanum foeniculaceicm, Nntt. Dry ridges. Mostly in limestone where it is 

 common. 



Gynosciadum pinnatum, DC. Leaves mostly lanceolate and nearly entire. Large 

 specimens have some of the leaves pinnate. Pools, rather common. 



Apiu))i {AiuoscUnum) Popei, (Gray). Sulphate flats where it is 1-2 inches high, and 

 thickets where it is 4-G inches high, common. Umbels oppositifoliate. 



Apium {LeptocauUs) patens, (Gray). Arkansas river. 



Apium (LejJtocaulis) dtvaricatus, (Gray). Blue county. 



Chmrophyllam procumhens, Lam. Very common. 



OsmorrhisK longistylis, DC. Alluvial woods, rare. 



Symplioriearpus vulgaris, Mx. Very common. 



Galium oirgatum, Nutt. Limestone blufls, uncommon. 



Fedia rudiata, Mx. Verj' common. 



Fedia longiflora, T. ct G. Tube of the corolla rose-purple, the limb white; flowers 

 larger than in any other of our Fedias. Limestone clift's. 



Fedia Nuttallii, T. A; G. Flowers also large, but narrower than in F. longiflora; 

 bracts variable, entire or red ciliate. Readily distinguished from any other si^ecies by 

 a curious spur like appendage on the side of the corolla tube. Springy places and sul- 

 phate flats. — [To be continued.] 



Fresh Water Alg^:;. — The question is often asked. Why are there so few who en- 

 gage in the study of the Fresh Water Alga;? Is it devoid of interest? The Algae are 

 ranked as a higher order of plants than the Fungi and the Lichens, yet of these there are 

 numerous students; if they And so much to interest, the AlgtB ought to claim at least 

 an equal share of attention. Si)ecimens may be collected in almost all localities in 

 common with other forms of Cryptogamic plants, and they are found at all seasons of 

 the year. Early spring brings forth its varieties of livid green Higeocloniams and 

 Mothrhu's which lived protected under the snow and ice during the vigorous cold of 

 winter ; and many varieties of Cacci, without protection maintain their perfect forms and 

 colors; later, as the more genial sun reinvigorates the vegetable kingdom these small 

 but perfect plants are developed everywhere in places supplied with sufficient mois- 



