96 



fruit with lanceolate acuniinate-cui-pidatc calvx-lobcs shorter than 

 the bracLiets. — E. Virginianum Torr. & Gray, Fl. i. 005, in part. 

 In tide swamps, N. Carolina to Georgia. Fl. August. 



7. E. Floridanum C. & R. Bot. Gazette, xiii. 140. Erect, 

 2 to 8 feet high: lower leaves narrowly oblong (1 to 4 inches 

 long), mostly entire, on long jointed petioles (sometimes a foot 

 long); upper ones becoming sessile, elongated-linear, usually 

 remotely serrulate: bracts linear-lanceolate, rigid, sharp-pointed, 

 entire or spiny-toothed, reflexed, longer tlian the subglobose heads; 

 bractlets linear, rigid, entire, tapering to a pungent tip, much 

 longer than the flowers: fruit with short ovate acute calyx-lobes 

 and very long rigid styles. 



Brackish marshes, Florida (r'M/-//.s.s). Distributed as E. praui I turn and 

 E Mettaueri. 



This is the only species of the group that has entire bractlets. Most 

 of the herbarium specimens labelled E. Mettaueri are this species, which 

 can be easily separated from the former by its entire bractlets. 



* * * Weaker: leaves tJiiii^ toothed to laciniate i sometimes 

 spinoseJy tipped): zvestern species [exeept E. virgatuni^ 



8. E. virgatum Lam. Diet. iv. 757. Erect, 1 to 8 feet high, 

 branching above: leaves oblong or oblong-ovate, often subcordate, 

 on short petioles; loy/er one entire or crenately toothed; upper ones 

 becoming sharply serrate or e^•en laciniately toothed: bracts linear 

 and entire or with a few bristly teeth, longer than the subglobose 

 heads; bractlets equally 8-cuspidatc, little longer than the flowers: 

 fruit with lanceolate acuminate cal\x-lol:)es and long rigid styles. 



Damp pine barrens, from N. Carolina to Florida, and westward to 

 Louisiana and Texas, 



Certain Louisiana specimens become nai-rower-leaved than the type, 

 and merge gradually into the extreme foiin, 



^'ar. Ludovicianum Alorong in litt., which has linear-lan- 

 ceolate or even linear leaves, — E. L//dovicia?nim jVIorong, Bull. 

 Torr. Bot. Club, xiv. 51. 



Barrens of Louisiana i Ldiujlois. etc ) and Texas ( Wriffht, Xeally). 



9. E, armatum C, cK: R. Bot. (iazette, xiii, 141. Diffuse, 

 branching tiiroughout, a foot or so high (sometimes quite tall): 

 radical leaves oblanceolatc (sometime broadly so), from serrate to 

 spinose-dentatc or incised, attenuate into a short more or less mar- 



