AGROSTIDE.E. 239 



i. Floral glume 4 mm. long, ligule 2 mm. long, awn 



10-20 mm. long 51 



i. Floral glume -t mm. long, ligule 1.5-2 mm. long. 



awn 10-20 mm. long 52 



i. Floral glume 4 mm. long, ligule 2 mm. long, awn 



4-6 mm. long 53 



i. Floral glume 4 mm. long, ligule 1-1.5 mm. long, 



awn 8-12 mm. long 54 



i. Floral glume 4 mm. long, ligule 1.5 mm. long, awn 



8-12 mm. long 55 



i. Floral glume 4 mm. long, ligule a ring, awn 1-2 



mm. long 47 



i. Floral glume 4-5 mm. long, ligule 5-6 mm. long, 



awn 2-6 cm. long 56 



i. Floral glume 4-5 mm. long, ligule 1 mm. long, awn 



10-15 mm. long 57 



1. M. lycuroides Vasey, ined. 



A densely tufted, diffuse and prostrate, much-branched, glaucous 

 green annual (?), 10-18 cm. high. Culms slender, compressed. 

 Sheaths shorter than the internodes, ligule very short; blades with 

 white thick margins, scabrous, conduplicate, pungent-pointed, 

 1.5-3 cm. long, 1-2 mm. wide. The terminal panicles spikelike, 

 2-3 cm. long, 4-6 mm. diam., the lateral ones more slender and 

 often partially enclosed by the sheaths. Spikelets jjurplish, sub- 

 sessile; empty glumes scabrous on the keels, first 2-nerved, about 

 2 mm. long, including the short unequal bristles, second 1-nerved, 

 about 3 mm. long; floral glume linear, acute, pubescent on the 

 margins, 3-nerved, 2.5-3 mm. long, with a curved stout awn 1-2 mm. 

 long; palea as long as its glume, sparingly pubescent, narrowly 

 elliptical, terminating in 2 short set^e between the two thin lobes. 

 Anthers nearly 2 mm. long. 



Nearly allied to J/. Schaffneri Fourn. 



Mexico, Palmer 489. 



2. M. SchaflFneri Fourn. Hemsl. Biol. Centr. Am. Bot. 3 : 542 

 (1880). J/, depaiqjerata Scribn. Coult. Bot. Gaz. 9: 187 (1884). 



A light green or purplish densely tufted, much -branched an- 



