14 THE FLORA OF IOWA. 



Saxlfraga 



Saxifrage. 



266. Pennsylvania, L. 



266. Swamp S. 



Sullivantia 



Sullivantia. 



267. Ohionis, T. & Gr.* 



267. Sullivantia. 



Heuchera 



Alum-root. 



268. hispida, Pursh. 



268. Alum-root. 



MStella 



Mitre-wort. Bishop's-Cap. 



269. diphylla, L. 



269. Mitre-wort. 



( RASSl LAt'E^]. 



ORPINE FAMILY. 



Penthorum 



Ditch Stone-crop. 



270. sedoides, L. 



270. Ditch S. 



HALORAGEVE. 



WATER-MILFOIL FAMILY. 



Myriophyllum 



Water-Milfoil. 



271. spicatum, L. 



272. verlicillatum, L. 



273. heterophylluin, Michx. 



271. Water-Milfoil. 



272. " " 

 273. 



Proserpinaca 



Mermaid-weed, 



274. palustris, L. 



274. Mermaid-weed. 



OXAGRACE*:. 



EVENING-PRIMROSE FAMILY 



Cirerea 



Enchanter's-Nightshatlc. 



275. Lutetiana, L. 



275. Common E. 



Gaura 



Gaura. 



276. biennis, L. 



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



276. Gaura. 



277. " 



Epilohium 



Willow-herb. 



278. angustifolium, L. 



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



280. coloratum, Muhl. 



278. Great W. 



279. Willow-herb. 

 280. 



Oenothera 



Evening- Primrose. 



281. biennis, L. 



282. rhombipetala, Nutt. 



283. -fruticosa, L. 

 284.' serrulata, Nutt. 



281. Common E. 



282. Evening-Primrose. 



283. Sundrops. 



284. Evening-primrose. 



Ludwigia 



False Loosestrife. 



285. polycarpa, Short & Peter. 



285. False L. 



LYTHRACE.E. 



LOOSESTRIFE FAMILY. 



Lythrum 



Loosestrife. 



286. alatum, Pursh. 



286. Loosestrife. 



Cnphea 



Cnphea. 



287. viscosissima, Jacq. 



287. Clammy C. 



CACTACE^l. 



CACTUS FAMILY. 



Opantia 



Prickly Pear. Indian Fig. 



288. Rafincsquii, Fngel. 



288. Prickly P. 



(i(iHHiTA(i:.i:. 



GOURD FAMILY. 



Slcyos 



Star-Cucumber. 



289. angulatus, L. 



289. One-seeded S. 



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





