150 



answering in a measure Montagne's query as to how the algae 

 described by him came to be in the mountains of French Guiana. 

 Goebel then inquires why, of the four species found by him in 

 fresh water at the mouth of the river, only one, Bostrychia 

 Moritziana, appears to have wandered up-stream, alluding, how- 

 ever, to the reported occurrence of Caloglossa Lcprieurii far up 

 the Hudson River [at West Point].* He remarks upon the in- 

 completeness of our knowledge of the interesting stream-flora of 

 Guiana and considers it not at all improbable that one or another 

 of the three other species named, for example, the Delesseria 

 \_Calogossa~\, may yet be found to have wandered inland. Al- 

 ready, however, nine years before Goebel's notes were published, 

 Dr. Ferdinand Hauck had reported f the occurrence of Caloglossa 

 Leprieurii on stones in a brook in the Sierra de Luquillo of Porto 

 Rico. There, also, it was recollected on July 20, 1902, by Mr. 

 Percy Wilson, of the New York Botanical Garden, who states 

 that it was abundant on stones in a single stream but was not 

 noticed in other streams of the region. The locality was about 

 12 kilometers from the sea, and the elevation, according to esti- 

 mates by Mr. Wilson and by Professor A. W. Evans, of Yale 

 University, may be conservatively placed at from 400 to 500 

 meters. The water, as would be expected, was entirely fresh to 

 the taste. The specimens agree perfectly with those collected 

 in the same mountains by Sintenis and referred to Caloglossa 

 Lcprieurii by Hauck. The species was originally described by 

 MontagneJ from two specimens collected in French Guiana, one 

 growing on maritime rocks near Cayenne, the other creeping on 

 culms of grasses reached by the high tide not far from the mouth 

 of the river Sinnamari. The Porto Rican specimens are wholly 

 sterile, so far as the writer can discover, and there seems to be 

 no reliable way of distinguishing them specifically from a speci- 

 men of Caloglossa Leprieurii from Cayenne — evidently typical, 

 if not an actual co-type — in the herbarium of Columbia Univer- 



* Mr. George Skene, of the New York Botanical Garden, is authority for the state- 

 ment that the water of the Hudson River at West Point is, at flood tide, decidedly 

 salt to the taste. 



tEngler's Bot. Jahrb. 9 : 461. 1888. 



% Ann. Sci. Nat. II. 13: 196. 1840. 



