43 



Jungh. & De Vriese, with poor specimens the affinity of this species 

 was not certainly determined. — 34. P, Pyrenaica. Lapeyr. fide Parla- 

 tore, not to be confounded with 48, P. Laricio, Poir., as has been 

 done, even by Lapeyrouse himself. — 39. P, Monteztcrnae^ Lamb., 

 species not sufficiently circumscribed. — 43. P. Engehitanni^ Carriere. 

 Wislizenus brought a single specimen from the mountains west of 

 Chihuahua. — 46. P. Canariensis, Ch. Smith, perhaps more nearly re- 

 lated to P, Laricio, Poir. The articulation of the four involucral 

 bracts is a curious feature which it has in common with our P. resin- 

 osa^ Ait. — 53. P. Murrayana^ Balf., is only a broader leaved moun- 

 tain form of P, contorta, Doug, — 56. P. tnberculata^ Gordon, not of 

 Don, which is a form of P. msignis^ Doug.— 67. P, Pinaster, Ait., 

 except by the position of the female ament, more nearly allied to P. 

 Canarie?tsis^ less so to P, Laricio. — 74. Pinus EUiotti^ Engelm., im- 

 perfectly known to Elliott, was rediscovered about ten years ago by 

 Dr. Mellichamp, and is here fully described and illustrated. 



35. Fresh Water Algae, IV. 



Wat 



Algae, has revealed to me, during the past year, new points of inter- 

 est in the development and growth of a few, and brought to light, 

 out of their hitherto hidden abiding places, many which previously 

 had not been recorded as dwelling in our land. 



The following list of upwards of one hundred plants, embraces at 

 least ninety which are new to the United States Flora, and of which 

 eighteen were wholly unknown. About fifty were collected in New 

 Jersey. This State, which has won a wide reputation for its peculiar 

 richness in phenogamous plants, also appears in the small portion 

 thus far explored, to be richly stocked with cryptogams. 



When the locality is not given in the list, it is to be understood 

 that the plant was found in the vicinity of Bethlehem, Pa.^ Some 

 were collected in the neighborhood of New York, and others in Mas- 

 sachusetts, Connecticut, Iowa, Florida, etc. 



To the collectors whose names are mentioned, I return cordial 

 thanks, alike for what they have done, and for their promises of fur- 

 ther favors. I am happy also in having several new volunteers, who 

 await the opening of the season to begin their explorations. To O. 

 Nordstedt, of Lund, Sweden, I am especially indebted for valuable 

 suggestions, and for many desirable extracts from his extensive libra- 

 ry of botanical works. Francis Wolle. 

 Bethlehem, Pa., March, 1880. 



• PHYCOCHROMOPHYCEAE. 



Oscillaria, Bosc— O. subfusca, Vauch. Wet gneiss rocks.— O. Poret- 

 tana, Menegh. Shaded limestone rocks.— O. tenuis, Ag. Drip- 

 ping rocks. O. Grateloupii, Bory. Submarine waters, New 

 York. Coll. R. Hitchcock.— 0. subsalsa, Ag., var, dulcis, Ktz. 

 Antigua, W. I. Coll. B. Romig.— O. natans, Ktz. Ponds, New 

 Jersey. — O. Froellichii, var, phormidioides, Rabenh. Swartwout 



Lake &c New Jersey. 

 Phormidi'umjKtz.— p. arenarium, Ag. Florida. Coll. J. D. Smith, 



