64 Rhodora [March 



Duss (no. 3920) which agrees with Hackel's description. There is 

 also a specimen from Senegal labelled Panicum pyramidal*. Both 

 specimens have a hairy ligule. This in the case of the Guadeloupe 

 plant, together with certain other rather remote resemblances, may 

 have led Hackel to place this form with P. spcctabile. The Senegal 

 specimen resembles the one from Guadeloupe superficially, but does 

 not agree with Lamarck's original description of P. pyramidal? where 

 he says "fleurs . . . glabres ou presque glabres," it having 

 plainly echinate spikelcts. Kunth says of P. pyramidalc that it is 

 related to P. plicatum Willd., which is a true Panicum and not an 

 Echinocfdoa. However, the Senegal plant differs from the Guade- 

 loupe plant in two important particulars: it has distinctly larger 

 spikelets (4.5-5 mm. long as opposed to 3.5 mm. long), and much 

 larger anthers (1.5—2 mm. long as opposed to 1 mm. long). In these 

 respects the Senegal plant approaches E. polystachya (E. spcctabilis). 

 Since the Guadeloupe plant is apparently distinct from E. pyra- 

 midalis and also from other American members of the genus, it should 

 be treated as a species, using the varietal name of Hackel. 



12. E. paludigena sp. now, robusta vel tenuis plerumque de- 

 cumbens glabra, foliis 8-25 mm. latis, ligulis nullis, zona ligulari 

 plerumque pubescenti, paniculis viridibus 10-45 cm. longis angustis 

 lanceolatis apertis, pilis ex nodis subbrevibus, ramis adscendentibus 

 1.5-7 cm. longis simplicibus vel subsimplicibus sparse vel omnino non 

 setosis, ramis inferioribus distantibus, spiculis mediocribus 3.5-3.8 

 mm. longis, 1.8-2 mm. latis late elliptico-ovoideis acutis sparse 

 strigosis, nervis copiose echinatis, spinulis mediocribus vel longis 

 tenuibus adscendentibus basi subtumidis, spiculis igitur facie inhis- 

 pidis, flore inferiore masculino, gluma inferiore acuminata plus mi- 

 nusve echinata, gluma superiore in nervis omnibus echinata, leni- 

 mate inferiore plerumque breviaristato, arista 2-8 mm. longa, lem- 

 mate coriaceo 2.5-3 mm. longo ovato acuto, paleis duabus, antheris 

 1-1.4 mm. longis. — Swamps, southern Florida: Hillsborough County, 

 1904, A. Frcdholm, no. (5,390 (type in Gray Herb.); Miami, 1904, 

 8. M. Tracy, no. 9,399; Cutler, 1904, A. A. Eaton, no. 959. 



Var. soluta var. now, paniculis purpureo-variegatis, spiculis an- 

 guste ovoideis vel ellipticis 2.8-3 mm. longis, 1.4-1.5 mm. latis sub- 

 acuminatis, lemmate coriaceo elliptico subacuto 2.5 mm. longo. — 

 Swamps, southern Florida: Everglades, Lee County, 1905, A. A. 

 Eaton-, no. 1,314; Myers, 1900, A. S. Hitchcock, no. 476; Manatee, 

 1901, S. M. Tracy, no. 7,754 (type in Gray Herb.). 



This species is most closely related to E. polystachya and E. guadc- 

 loupensis, differing from them primarily in the absence of a ligule. 



