7 



ceding. It is not reported north of the U. S, and Canada line, 

 and in the South only in Louisiana, and westward to California. 

 Personal observation and an examination of many local cata- 

 logues lead me to think that it is mainly a seaside species, and 

 rather rare in the interior of the country. It covers extensive 

 swamps along our northern Atlantic seaboard. 



This species may be easily distinguished from T, latifolia by 

 its light brown color, its simple pollen, its linear stigmas and 

 female bracts. Rohrbach describes the bracts as shorter than 

 the stigmas, but in our N. A. forms the two are frequently of the 

 same length. (See fig. 5). The denuded rachis is rough, with 

 stiff points, which are the bases of the fallen flowers. 



X' Domingensis. — 10. Slaminate bracts, X 8. II. Do. of a specimen from 

 Buenos Ayres, X 8. I2, 13, 14. Fertile and sterile flower and pistillate bract, 

 each X 10. 



3. T. Doniiiigcnsis, Pers. (Syn., ii, 532.) 



ifoli 



Doui 



(Figs. 10-14). 

 tifolici^ yet tli 



sesses some distinctive specific features. Pollen simple, often as 

 small as tsVtt inch in diam. ; male bracts often as long as the 

 anthers, thick cuneate or broad spatulate at the summit, much 

 larger than in T. angiistifolia (figures 10, 11); female bracts 

 delicate, with a small, rounded or spatulate head, as long as the 



stigmas 





14) ; perigonial seta^ shorter than the stigmas, 

 thickened upward near the summit (figs. 12, 13). This is a very 

 vigorous grower, and sometimes even gigantic in size. Prof, E. 

 L. Greene describes specimens* {T. bracteata^ Greene, Bull. Cal. 



The plant so named by Mr. Greene, although the monarch of its tril>e, is clearly 

 to be placed here, as it exhibits all the diagnostic marks, especially the strap-shaped 

 male bracts and the club shaped setse, ascribed by Rohrbach to T, Domingensts, 

 The characters relied upon by Mr. G. in naming, are its spaihaceous bracts, a feature 

 common to all the species, and its great size, which in itself certainly cannot be a 

 sufficient ground for specific distinction. There is a specimen from Guarajuato, Mex- 

 ico, in TTerb. Gray, which has an inflorescence measuring over all some 32 inches, 

 nearly as long as that of the plant from Santa Cruz- 



