1921] Fernald — Expedition to Nova Scotia 141 



in the cobble-beach, Ophioglossum vulgatum, so closely similar that 

 it required real care to separate the two; and even after the plants 

 were in Dress we found roots of Ophioglossum tangled with those of 

 the Pogonia. Panicum sprctum had developed wonderfully and now 

 formed i. handsome and almost continuous belt at the upper border 

 of the beach, and in the cobble-beach with the Pogonia, Ophioglossum 

 and Lipcris Loeselii there was the usual series of intergrades between 

 typical Botrychium dissectum and the var. obliquum. 



In the inundated peaty border of Beaver Lake, Long and Linder 

 were getting Utrieularia minor and, in fine flower, the common but 

 rarely flowering U. intermedia, and near by a beautiful tall Panicum, 

 in habit resembling P. spretum but with broad panicle and very 

 filiate sheaths and densely bearded nodes, one of the complex of 

 plants which is treated by Hitchcock & Chase as many species: P. 

 Lindheineri, P. huachucae, P. tennesseense, P. languidum, etc., but this 

 plant is nearer the type-material from Texas of P. Lindheimcri than 

 to the others. In sending to a contributor to Rhodora a galley 

 proof in which Panicum was mentioned the editor once made the 

 penciled query opposite one expression: "Redundant?" The proof 

 came back without change except for the added comment: "The 

 spikelets of all the Panicums are redundant." Be that as it may, 

 it is certain that many of the species of Panicum as recognized at 

 present in America are highly redundant. The four above mentioned 

 are clearly phases of one species but I am not yet certain that there 

 are not s ;ill more of their variants similarly masquerading as species. 

 At the margin of the lake they found the unique Myriophyllum 

 tenellum, and when, returning from Cedar Lake, we stopped to take 

 them in, Long was a half-mile away on the barrier beach below the 

 mouth of Beaver River, whence he returned with Carex silicea, the 

 characteristic whitish-brown sedge of our southern dunes. 



Our botanizing had developed a pendulum-swing, first north then 

 south, so on the 27th, as it was the turn to work south, we went to 

 Belleville station, Long and Linder working eastward to explore 

 some of :he lakes in that direction, Bean, White and I going west 

 around the shore of Eel Lake and on to Abram River. Eel Lake is 

 decidedly brackish, where we examined it full of Potamogcton pecti- 

 natus anci Ruppia maritima, var. longipes Hagstrom, 1 which is abund- 



1 See Rhodora, xvi. 125 (1914). 



