THE GREEN ALGAE OF NORTH AMERICA 



473 



v. aureum, 239. 



f. cylindricum, 239. 

 crispuni, 244, 246. 



v. gracilescens, 245. 



f. typicum, 245. 



v. uruguayeuse, 245. 

 cryptoporum, 229. 



v. vulgare, 229. 

 cyathigerum, 260, 262. 



f. americanuni, 261. 



f. oruatuin, 260. 

 decipiens, 262. 

 Donnellii, 252, 253. 

 ecbinatuni, 251, 252. 

 echinosperrnuni, 250. 



v. horriduin, 250. 

 flavescens, 249. 

 fonticola, 264. 

 foveolatum, 233. 

 fragile, 232, 233, 251. 

 franklinianuui, 231. 

 geniculatum, 234. 

 giganteum, 265. 

 gracillimum, 247. 

 grande, 241, 242, 243. 



v. aequatoriale. 243. 

 f. hortense, 243. 



v. angustum, 242. 

 Howardii, 244. 

 Huntii, 253. 

 hystrix, 254. 

 irregulare, 251. 

 Landsboroughii, 241. 

 Londinense, 266. 

 longatuin, 258. 

 Lundense, 258. 

 macrandriutu, 258. 



v. aeniulans, 258. 

 Magnusii, 230. 

 margaritiferum. 238. 

 martinicense, 240. 

 mexicanum, 243. 

 niultisporum, 257. 

 nobile, 248. 

 nodulosum, 24?, 248, 262. 



v. commune, 248. 

 obesutn, 245. 

 oboviforine, 241. 

 obsoletutn, 230. 

 obtruncatum, 264. 



v. oblatum, 264. 

 pachyandrium. 241. 

 paludosum, 237. 



v. americanuni, 237. 

 Pithophorae, 244. 

 plagiostomutn, 233. 



v. gracilius, 233. 



platygynum, 264. 



plusiosporuni, 230, 231. 



pluviale, 264. 



polymorplntm, 232. 



princeps, 234. 



Pringsheitiiii, 246. 

 v. Nordstedtii, 247. 



punctato-striatum, 243, 244. 



punctatum, 240. 



pungens, 249, 251. 



pyriforme, 265, 266. 



Richterianum, 236. 



rivulare, 236. 

 :.'. major, 241. 



Rothii, 262, 263. 



rufescens, 229. 



subsp. LundelHi, 229. 



sancti thomae, 265. 



scrobiculatum, 234, 240. 



sexangulare, 253. 

 v. majus, 254. 



spirale, 253. 



stagnate, 235. 



stellatum, 252. 



suecicum, 230. 



taphrosporum, 239. 



undulatum, 261. 

 f. senegalense, 262. 



upsaliense, 235. 



varians, 232. 



Vaucherii, 232. 



vernale, 245. 



Wolleanum, 256. 

 v. concinnum. 257. 

 f. iusigne, 257. 

 Oocystis, 159. 



Borgei, 160. 



crassa, 160. 



lacustris, 160. 



solitaria, 160. 



f. major, 160. 

 Oogonium erect, 267. 

 Oogonium patent, 267. 

 Operculata, 243, 247, 261, 262. 

 Operculate, 225. 

 Ophiocytium, 93. 



arbuscula, 95. 



capitatum, 94. 



circinatum, 94. 



cochleare, 94. 



cuspidatum, 95. 



gracilipes, 95. 



niajus, 94. 



parvulum, 94. 



v. circinatum, 94. 

 Ophrydium, 157. 

 Ostreobium, 407, 408. 



