346 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
3. Cathestecum stoloniferum (Fourn.) Griffiths, Contr. U. 8. Nat. Herb. 14: 362. 
1912. 
Atheropogon stolonifer Fourn. Mex. Pl. 2: 140. 1886. 
Type locality, ‘‘La Parada, Sierra de Oajaca.”’ 
Rance: Southern Mexico, 
HERBARIUM SPECIMENS: 
Pursia: Tehuacan, dry soil, /itchcock 6072. 
GUERRERO: Rfo Balsas, Orcutt 4166. . 
Oaxaca: Tomellin, rocky hill, Hitchcock 6238; Griffiths 9764. San Antonio 
Valley, Smith 958. 
4, Cathestecum multifidum Griffiths, Contr. U. 8. Nat. Herb. 14: 360. /. 24. 1912. 
Type locality, “Iguala, Mexico.”’ 
Rance: Highlands of southern Mexico. 
HERBARIUM SPECIMENS: 
GuERRERO: Iguala, Griffiths in 1909. 
Oaxaca: Oaxaca, rocky hill, /Titchcock 6164. 
90. PENTARRHAPHIS H. B. K. Nov. Gen. & Sp. 1: 177. pl. 60. 1816. 
KEY TO THE SPECIES. 
Spike consisting of 1 perfect spikelet and a rudimentary second 
one....--- Lee ce eee cece ee ee eee . 1. P. scabra. 
Spike consisting of 9 ‘perfect spikelets... wee cece ee eee ee eeee . 2. P. polymorpha. 
1. Pentarrhaphis scabra If. B. K. Nov. Gen. & “Sp. 1: 178. pl. 60. 1816, 
Type locality, ‘in planitie montana Mexicana prope Tula et Queretaro.” 
Rance: Southern Mexico to Colombia. 
HERBARIUM SPECIMEN FROM MEXIco: 
Cutapas: Valley of Jiquipilas, Nelson 2940. 
2. Pentarrhaphis polymorpha (Fourn.) Griffiths, Contr. U. 8. Nat. Herb, 14: 357. 
1912. 
Atheropogon polymorphus Fourn. Mex. Pl. 2: 141. 1886. 
Type locality, “San Luis de Potosi.”’ 
Rance: Mexican plateau. 
HerBARIUM SPECIMENS: 
SinaLoa: On road between Acaponeta and Rosario, Rose in 1897. Between 
Rosario and Colomas, Rose 1621. 
Duraneao: Durango, Palmer 382 in 1896. 
Jatisco: Tequila, Rose & Hough 4775. Guadalajara, hills, Pringle 5398; plains, 
Pringle 2559, 11242. Rio Blanco, Palmer 200 in 1886. 
MicuoacAn: Morelia, Arséne in 1909. 
MoreEtos: Jojutla, limestone hills, Pringle 8707. 
91. TRIPOGON Roem. & Schult. Syst. Veg. 2: 34, 600. 1817. 
1. Tripogon spicatus (Nees) Ekman, Arkiv Bot. 11*: 36. 1912. 
Bromus spicatus Nees, Agrost. Bras. 471. 1829. 
Leptochloa spicata Scribn. Proc. Acad. Phila. 1891: 304. 1892. 
Type locality, ‘in campis campo mimoso dictis, provinciae Piauhiauae,’’ 
RanGE: Texas to Argentina. 
HERBARIUM SPECIMENS FROM MEXICO: 
Durango: Durango, clefts of bowlder, Iron Mountain, Hitchcock 7632. 
San Luis Potosi: San Luis Potos{f, gravelly mesas, Pringle 3267. 
92. ELEUSINE Gaertn. Fruct. & Sem. 1: 7. pl. 1. 1788. 
1. Eleusine indica (L.) Gaertn. Fruct. & Sem. 1: 8. 1788. 
Cynosurus indicus L. Sp. Pl. 72. 17538. 
Type locality, ‘‘in Indiis.”’ 
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