126 I'ANRACE.E. 



virf/tt/mti. \'iir. oKirrnsprniiioii \'iisoy, t'oiitrib. I'. S. Nat. Herb. 

 3:;3G (18it2). 



I'ereuiiiiil: culms stout, 100-180 cm. liigli. FJgulc a tliick 

 ring of short hairs; blades thick, rigid, often involute, smootli or 

 liairy near the ligule, iJO-GO em. long, o-lO nun. wide. Panicle 

 exserted, smooth, dilt'use, })yramidal, oO-SO em. long, rays single 

 or in twos or threes, often naked for the lower third. Spikelets 

 smooth, ovate, acute, S-9 mm. long, fi'""t glume over lialf as long 

 as the spikelet. ovate, acute, 5-T-nerved, second ovate-acute, 

 8-0-nerved; tloral glume of the staminate spikelets nearly as long as 

 the second glume, 5-T-nerved; i)alea nearly as long as its glume, 

 membranous, ovate when spread, fertile lloret smooth, 5 mm. 

 long. 



31exico. Pn'/ifjlc 1 1 24. 



It was lirst cultivated in S. W. Texas in 18S1 l)y Dr. Ilavard. 



Texas and ^lexico. 



US. P. stenodes (Jriseb. Fl. W. Ind. 54: (18G4). /'. nm-eps 

 sfrir/Kin Chapm. Fl. S. States. 073 (1800). 



A tufted slender glabrous erect annual, sparingly branched 

 above. 50-80 cm. bigii. JMadcs erect, involute, setaceous, 12-20 

 cm. long. I'aiiicli' c\sertc(l oi- tiic lower partly included, narrow, 

 simple. 4-8 cm. long, with 5-(') slender I'ays. Spikelets ova'te- 

 lanceolate, 2.5 mm. long, first glume oiu'-tbird to two-thirds as long 

 as the spikelet. acute. 1 -nerved, second glume and floral glume of 

 the sterile floret tliin. ovate, acute. 5-iu'rved: palea much shorter 

 than its glume; fertile lloret firm, half-terete, oval, obtuse, 1.7 mm. 

 long. 



Texas. XeaJh-i/, V. S. Dept. Agricul. Oil; Alal)ania. .Vd/ir. 



Pojids and wet places, Florida to 'I'exas. 



3'.). P. gibbum Kll. Hot. S. C. & (la. 1 : 11(1 (isiti). 



Culms slender, branching below, 30-50-00 cm. or even 2 m. 

 high. IMades aiul sheaths smooth or soft hairy, blade flat, acumi- 

 nate, T-12 cm. long. 4-12 mm. wide. Panicle close, spikclike 

 above, interrupted below. 8-10 cm. long, 13nim.diam. Spikelets 

 caducous, each on a short, slender pedicel, oblong, obtuse, or some 

 of the lowest narrower and acute, 3.5 mm. long; lirst glume about 



