128 



tinctlon between it and E. latifoUa. It is now to be looked for in 



other localities. 

 Buffalo, N. Y. 



David F. Day. 



L 



Query.— Is it always the case that the common blue flag, Iris 

 versicolor, changes the color of its flowers to white when removed 

 from the swamps to garden cultivation ? I have never seen any al- 

 lusion to the fact, if it is so. 



A few years ago, whilst in Darien, Ga., a lady showed me a white- 

 flowered flag in her garden, and assured me that she had herself re- 

 moved it from the neighboring swamp, and that it had become white 

 after removal. Here, in the gardens in Aiken, there is plenty of it 

 all white-flowered. I have not been able to trace the origin of the 

 plants directly, but they were probably brought from the swamps. 

 Before seeing that in Darien,! had had reason to suspect such a change, 

 and I make this note of inquiry whether it has been observed by others. 



Aiken, S. C, Sept. 6th. H. W. Ravenel. 



New Station for Psilotum triquetrum, Swartz. — Last week I 



found here six or .eight specimens of this plant growing under a live 

 oak and pine. It has been identified by Dr. Gray, to whom I sent 

 it, and also by Mr. Ravenel of Aiken, S. C, who informs me that 

 thirty-five years ago he met with the same in St. John's — Berkeley, 

 in this State, but that he has not seen it since. He found about a 

 half dozen specimens growing in an old deserted garden, under 



** wild orange-trees." Chapman says * East Florida. 



Bluffton, S. C, Sept. i8, 1882- J. H. Mellichamp. 



Echinospermum Greenei, Gray. — As plants gathered by me 

 about the middle of March at San Diego, Cal.,, and pronounced this 

 species by Dr. Gray, do not agree in some respects with the descrip- 

 tion in the North American Flora, the following completer one is 

 herewith given : 



Annual, 3'-! 2' high, appressed-pubescent throughout, branching 

 from the base, branches prostrate or ascending, weak ; leaves linear- 

 oblanceolate, the lower ones opposite and usually connate, often lin- 

 ear, bracts broader, sometimes narrowly oblong ; racemes bracteate 

 throughout ; calyx white- or often yellow-hairy (hairs with a promi- 

 nent pustulate base), lobes enlarging in fruit, open, lanceolate, acute, 

 with a dense white tuft of hairs at the tip ; flowers less than a line 

 long, white ; fruit scattered, lowest short-pedicelled, not joined to the 

 stem ; nutlets with three distinct (usually white) ridges running more 

 or less regularly from the tip around the sides (but not on the angles) 

 and down the centre to the base on the outer face, and usually with 

 one intermediate one on each side; cross-ridges forming regular meshes 

 with these, and from the angles thus formed arising straight prickles 

 which are scarcely ever glochidiate and often not even barbed ; the 

 depressed meshes filled with from one to several tubercles ; nutlets 

 cuspidate, ovate, convex on the outer and inner faces ; inner face 

 reticulated but not armed, provided with a very prominent ridge run- 

 ning from the sharp tip to the large, almost deltoid scar at the base; 

 angles rounded. 



