1 



i 



i 



100 



Sauv., Flor. Cubana, p. 176 (1868); W, limmphila, S. Hart 



Wright, Bull. Torr. Club, xiv, p. 135 (1887). 



When examining the specimens of this plant kindly sent me 

 by Mr. Wright, in June, 1887, I was much occupied with other 

 matters and failed to recognize them as the same as Charles 

 Wright's No. 3775, which had already received a name as cited 

 above. I do not question the validity of the genus established 

 by him, but would suggest its nearer affinity to Heleochans^ as 

 indicated by Sauvalle, than to Diilichium, as supposed by Mr. 

 Wright. 



Heleocharis 



This species was 



described from specimens collected by Dr. Engelmann, at St 

 Louis, Mo., and labelled by him: '' E, obtusa, Schult? var. setis 

 brevioribiisy It has an elongated, sub-cylindrical, often acutish 

 spike and bristles only about the length of the achenium, or even 

 shorter. In looking over a quite extensive suite of specimens of 

 Heleocharis ovata (Roth), R. Br. (77. obhisa, Schultes), I find 

 considerable variation in the relative lengths of bristles and 



H, 



this character have heads elongated. The specimens most nearly 



H, 



9 



St. Louis (Engelmann, Riehl), Oquawka, Illinois (Patterson) 

 (the var. detonsa, Gray), Tinicum, Delaware Co., Penn. (Porter) 

 and "hills in Waltham, Mass.," (B. D. Greene) the last being the 

 H. obiiisa, var. /?, Torrey, Ann. Lye, iii., 303. The material at 

 command indicates that Steudel's species is a variety of the wide- 

 spread H. ovata, as remarked by Dr. Watson, in Bot. Cal., ii, P- 

 222, but more material is needed to settle this beyond dispute. 

 The Eleocharis diandra, C. Wright, in BuLL. ToRR. ClUB, x., p. 

 1 01, seems clearly to belong here, and was so placed by Dr. 

 Gray in Bot. Gaz., ill., p. 81, before Mr. Wright's description was 

 published. 



-^ICHROMENA CEPHALOTES (Walt.) {Scirptis ceplialotes, 

 Walt, Flor. Car., p. 71 (1788); D. leucocephala, Michx., Flor. 

 Bor. Am., i, p. 37 (1803).) 



Dichromena puhera, Vahl. Specimens collected by Dr. Wat- 

 son in Guatemala (No. 1 6G a) are markedly proliferous, after the 

 manner of some other sedges, the peduncles rooting at their apices. 



( 



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