ANDHOIHKJOXE.E. 47 



Subspecies maritimus Hack., 1. c. Yar. geunimis Hack. A. 

 ina-ntunns Chiiijm. Fl. S. States. Supi)l. G(i8 (1880). 



Leaves and spathes glabrous; blades 10 cm. long. Spikelets 

 sessile, 10 mm. long. Panicles or racemes 2-branclied. Spathes 

 acuminate. Racemes 4-5 cm. long, stout, 6-8-jointed; raclns 

 subundulate; pedicels densely clothed on the margins with long 

 hairs; first glume of sessile spikelet 3-5-nerved, long, pointed; third 

 light violet, awns 13 mm. long. Pedicellate spikelets 7-10 mm. 

 long; first glume 7-nerved, very short-awned ; fourth also short- 

 awned. 



Florida, Cluqyman. 



7. A. condensatus (Nees) H. B. K. Nov. Gen. et Sp. 1 : 188 

 (1815). Schizacliyrium condensatus Nees,, Agrost. Bras. 333 

 (1829). 



Culms stout, 30-150 cm. high, paniculately branching. Sheaths 

 compressed, mostly shorter than the internodes; blades flat or con- 

 duplicate, those of the sterile shoots 30-40 cm. long, those of the 

 culm shorter, 2-7 mm. wide, smootli or scabrous. Spathes 1-2 cm. 

 long, lanceolate, acute. Eacemes short, loose, 2-8- Jointed, more or 

 less wavy or zigzag; pedicels of the sterile spikelets as long as tlie 

 fertile spikelet. Spikelets usually 4 mm. long, linear; first glume 

 chartaceo-membranous, linear-subulate, 2-toothed, or acute; third 

 about the length of the first, lanceolate, nerveless, ciliolate; fourth 

 about the length of the second, linear, 1-nerved, glabrous, awn 

 12-15 mm. long. Palea 0. Stamens 3. 



Yar. paniculatus (Kunth) Hack. Monog., 1. c. A. imnimda- 

 tus Kunth, Enuni. PI. 1 : 494 (1833). Racemes exserted above 

 the spathes, or the base included. 



Mexico, State of San Luis Potosi, Primgle 3134. 



8. A. semiberbis (Nees) Kunth, Enum. 1 : 489 (1833). Schiza- 

 chyrium semiherhe Nees, Agrost. Bras. 336 (1829). A. oligostacli- 

 yus Chapm. Fl. S. States. 581 (1869). 



Culms erect, leafy below, branching above, 90-150 cm. high. 

 Sheaths often barbate at the throat; blades smooth, glaucous, 

 keeled, the lower 30-40 cm. long, 4-5 mm. wide ; spikes solitary, 

 the terminal one barely exserted, the lateral ones often half ov more 



