14 



THE FLORA OF IOWA. 



Saxifraga 



266. Pennsylvanica, L. 

 Sullivantia 



267. Ohionis, T. & Gr.* 

 Heiicliera 



268. hispida, Pursh. 

 Mitella 



269. diphylla, L. 



CRASSULACE^. 

 Penthoriim 



270. sedoides, L. 



HAtOBAGE^. 

 Myriophyllum 



271. spicatum, L. 



272. verticillatum, L. 



273. heterophyllum, Michx. 

 Proscrpinaca 



274. palustris, L. 



ONACxRACE.*;. 



Circpea 



275. Lutetiana, L. 

 Gaura 



276. biennis, L. 



277. coccinea, Nutt. {See. 4pp.) 

 Epilobium 



278. angustifolium, L. 



279. palustre, L. var. lineare,Gr. 



280. coloratum, Muhl. 

 Oenothera 



281. biennis, I,. 



282. rhombipetala, Nutt. 



283. fruticosa, L. 



284. serrulata, Nutt. 

 Luclivigia 



285. polycarpa, Short & Peter. 



tYTHRACE^. 



Lythrum 



286. alatum, Pursli. 

 Ciipliea 



287. viscosissima, Jacq. 



CACTACE.E. 

 Opantia 



288. Rafinesquii, Engel. 

 CUCURBITACE^. 



Sicyos 



289. angulatu.s, L. 



.Saxifrage. 



266. Swamp S. 

 Sullivantia. 



267. Sullivantia. 

 Alum-root. 



268. Alum-root. 

 Mitre-wort. Bisliop's-Cap. 



269. Mitre-wort. 

 ORPINE FAMILY. 



Diteli Stone-erop. 



270. Ditch S. 

 W.1TEK-MII.FOIL FAMILY. 



AVater-Milfoil. 



271. Water-Milfoil. 



272. " " 

 273. 



Mermaid- weed, 



274. Mermaid-weed. 



EVENING-PRIMROSE FAIWILY 



EncIianter's-Niglit-ihadr. 



275. Common E. 

 Gaura. 



276. Gaura. 



277. " 

 AVillo\v-lLerb. 



278. Great W. 



279. Willow-herb. 



280. " " 

 Evening-Primrose . 



281. Common E. 



282. Evening-Primrose. 



283. Sundrops. 



284. Evening-primrose. 

 FaLse Loosestrife, 



285. False L. 



LOOSESTRIFE F.VMILY. 



Loosestrife. 



286. Loosestrife. 

 Cixpliea. 



287. Clammy C. 

 CACTUS FAMILY. 



J'riclily Pear. Indian Fig. 



288. Prickly P. 

 GOURD FAMILY. 



.Star-Cucumber. 



289. One-seeded S. 



*Fide Prof. C. E. Bessey, Ames. 



