164 I'ANlCACEiE. 



Spikes exserteil, interrupted below, 7-15 cm. long, 8 mm. diam., 

 l)ristles all simple (not plimiose), all sliorter than the single spike- 

 lot or one of them longer. 8])ikelet elliptical, acute, about 7 mm. 

 long, first and second glumes ovate, 1-nerved, the former about 2 

 mm. long, the latter 13 mm. long; lloral glume of the neuter floret 

 acute, -i-Q mm. long. 4-r)-nerved, its paloa about I mm. lojig; 

 fertile Horct acute, 5-0 mm. long, the glume 5-nerved. drain 

 obovute. 2 mm. long. 



Mexico, PriiKjU' 480. 817. 'J'he name given by Scriljuer had 

 been used by Sprcng and is a synonym for Sehtria pui'2)ut'ca. 



Found uiuler clitfs of ledges. 



2. P. multiflorum Fouru. Ilemal. IJiol. Coutr. Am. Hot. 3 : 508 

 (1880). 



("ulms erect, solid, 30-40 cm. high. Sheaths smooth or sca- 

 brous; ligule a fringe of hairs; blades Hat, scabrous or hispid. 30-40 

 (Mil. long, 5-8 mm. wide. Spikes exserted. !t-15 mm. long. 10-13 

 mm. diam. Involucre consisting of about 30 jiectinate bracts, all a 

 little shorter, or some of them as long or some longer than the 5 

 spikelets, except one that is larger; many smaller bristles below. 

 S})ikelets ovoid-laiiccolate, about mm. long, iirst glume ovate, 1- 

 nerved, 3 mm. long, sei'ond ovate acute, 5-nerved, 5-G mm. long; 

 Horal glume of ni'Uter floret 5-nerved, 5.5 mm. long, that of the 

 terminal Horct a little longer, 



.Mexico (.lalisco), Priiir/h' 3818. 



Wet slopes ot' Hai'i'anca near (Juadalajara. 



:'.. 1'. i.ATiroMiM Sprcng. Syst. 1 : 3()-> (1824). fli/mnolJn'ix 

 Z^///o/m Sciiull. Munt. 3:(;oi (18-.'4). 



Culms stout and tali, branciiing above, 120-150 cm. high, the 

 nodes i;lothed with siioi't hairs. Leaf-blades Hat, IJO-tJO cm. long, 

 2-;) cm. wide, narrowed into a petiole, midrib ])roniinent. white. 

 Spikes 4-() cm. long, protruding from the upjier sheaths, invo- 

 lucre consisting of about 20 simple bristles as long as the spikclets, 

 and one bristle much longer (15 mm. long). Spikelets linear- 

 lanceolate, not far from (J mm. long, first glume 1 mm. long, second 

 ovate-acute, 3-nerved, 2-3 mm. long; floral glume of the neuter 



