PAMCK.K. 123 



Lt'iiM»Ia(lt'.s sinootli, 7-12 cm. Ioiilt. 'i'-^ mm. wide. I'aiiicU's miii-h 

 fxst'rtctl. simple. S-i;» cm. loiijr, nns few, donpitcd. lu'ariiij; 

 2-4 rtpikclcts near llic tips. Spikclots elliptical, acute, papilloso- 

 hispid, over ;5 mm. l()ll^^ lii-st .<>liime minute, second and third 

 broud, oval, obscmvly o-T-nerved, palea to the lower lloret (>: fer- 

 tile spikelet smooth, elliptical, nearly .'{ mm. lon^'. 



Te.xas. Svrihiirr. 



South Carolina to Florida and Te.xas. 



31. P. gymnocarpon Kll. iJot. S. (". and (ia. 1 : lir (ISIO). 



Perennial; culms i'ii,nd. erect. (i(i-I(i(» cm. liiiih. nodes brown. 

 Sheaths shorter than the internodcs; blades v»()-:)(l cm. lon^. 2-3 

 cm. wide, lanci-olate. ilat, broad at the base, smooth excej)t the 

 xo\\)l\\ inaririns. Panicle pyramidal, risjid. the fi'W spi-cadin<:f ni)'S, 

 mostly two oi more, from nodes 'I-') cm. distant, ."JO cm. loni;, 18 

 cm. diam. Spikelets on short pedicels, usually in scattered clusters 

 of :>-('». lanceolate, about •! mm. loiii:', l.rst <i:lume narrow, awu- 

 pointed, ;i-nerved, 4-."t mm. hmi;. .seccmd and third loiiiror, 

 ')-nerved. ])alea for the third (tloral) ^lume about half as .lonif as 

 the lloict: fertile ilorct very smooth, obovoid, obtuse. 2 mm. Ion*,'; 

 rachilla about 1 mm. loii<;. .separatin<,' perceptibly the ylumes and 

 florets. 



Louisiana, V. S. Dr/)/. Af/riciil. T") from Tianiilois. 



l^anks of rivers. South Carolina to l-'lorida and Texas. 



'Vi. P. virgatum L. Sp. I'l. ')U {\:y.]). 



Culms _s:lal)rous. firm, lOd-ltio cm. hi^ii. from tufteil, jieren- 

 nial rootstocks. Liirule often silky-bearded; blades of culm .'Ki-oO 

 cm. lon^, flat. firm, with a wide white midrilt. the lower oiu's I m. 

 lon<>-. 5-10 mm. wide. Panicle I'xserted, compound, loo.se and 

 .spreadino:, droopinir or erect, 2l)-")(>cm. long. Spikelets scattered, 

 often ]Mir])lish. mostly in pjiirs on pedicels 2-.") mm. long, very 

 variable, ovate-acute to ovate-lancjolate, iJ.o-fJ mm. long, first 

 glume deltoid to ovate-acute, 2—1.5 mm. long, o-O-T-nerved, 

 second glume ovate, acute or acuminate, 3.5-5.5 mm. long, o-T- 

 nerved; floral glume of the staminate floret shorter. 5-7-8-nerved, 

 fertile floret ovate, acute or obtuse, 2.3-2.7 nnn. long. 



The above measurements were (-arefuUy nnide after examining 



