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the party at Fulton Chain Station, to which point all baggage should be 
checked. Mrs. Hugh M. Smith and Mrs. N. L. Britton will act as guides. 
Sullivant Moss Chapter Members are requested to notify them if they 
intend to attend the Symposium. For further information address, Mr. 
Joseph Crawford, 2824 Frankford Avenue, Philadelphia, Pa., Secretary of 
the Symposium. 
“WHEN DOCTORS DISAGREE.” 
(Before reading this note, please turn to the Bryologist 7:78. Sept. 
1894, and read carefully the article under this caption, noting dates 
mentioned. ) 
In my herbarium are two packets of mosses labeled as follows : 
Thelia Lescurii Sulliv., Sandy soil, Rockville, L. I., Dec. 1, 1899. Coll. 
A. J. G., type of P. Groutii, No. 196, N. Am. Musci Pleurocarpi. De- 
pression in base of chestnut tree. Hempstead, L. Id., Dec. 1, 1899. 
In my collection of letters from Mrs. Britton, I find one from which the 
following is an extract. 
“Bedford Park, Dec. 4, 1899. 
“Your packet of mosses is received. Thelia Lescurii occurs on West 
Rock, at New Haven, where Prof. Eaton collected it, and I think it has been 
found at other places in New England, but I should have to look this up at 
the herbarium. The Plagiothecium you send is a pretty little species, con- 
spicuous for its resemblance to the laxer forms of H. recurvans , which it 
resembles in its small capsules, which are horizontal, and its recurved leaves. 
I think it will go under one of the varieties of H. denticulatum, either laetum 
or aptychus. Send it to Dixon for an opinion. It answers pretty well to No. 
361, Aust. Musci App., which was distributed as P. dent. var. pusillum , 
which he says grows on the roots of trees in dry woods - - - - - . 
“I shall be writing to Dixon soon about another matter, and will send 
this to him, as I should like his opinion on them.” 
The italics are mine.' I may add that at this date, the Dec. 1899 col- 
lection of Thelia Lescurii was the first and only collection of the species I 
had ever made. 
I will draw no inferences, for I feel that my readers will be amply able 
to do that for themselves. A. J. Grout. 
BRYOLOGICAL NOTES 
A. J. Grout. 
Pogonatum brachyphyllum Michx. None of the available descriptions of 
this species allude to the great difference between the capsules of this species 
and those of P. brevicaule. The capsules of the latter are erect and almost 
or quite symmetric, while those of P. brachyphyllum when fresh are inclined 
about as much as those of P. alpinum, and are oblong-ovoid and strongly 
unsymmetric. This difference is much less apparent in herbarium speci- 
mens. 
