ELIONURUS. ANDROPOGONEE (AUCT. EDUARDO HACKEL). 339 
simplices. Vagin:ze teretes, arcte, summa laminifera. Lamins valde 
elongate, sectione transversa orbiculares, diam. 0,5—0,6 mm., flaeci- 
dulci, margine superne scabra ceterum leves, costis aaqualibus 7—9 
intus prominentibus (media lateralibus non crassiore) percurss. 
Racemi 8—10 em. longi, sublaxiflori, albo-viriduli, sericeo-pilosi. 
Articuli spieulam dimidiam sequantes. Spiculæ sessiles 8—10 mm. 
long& ; gluma I"* carinis totoque dorso villis patentibus mollibus albi- 
dis '/,—'/, glumæ squantibus dense vestita, tenuiter 8—10-nervis ; 
II“ anguste lanceolata, acuminata, dorso hirsuta ; II acutissima, 
ciliolata. Spiculze pedicellate 6—7 mm. longs; gluma I“: 7-nervis, 
utroque margine implicata, laxius breviusque quam in spicula sessili 
villosa. 
Brasilia austr., loco speciali ignoto (Sello); Montevideo (Arechava- 
leta in h. m.). 
10. E. barbieulmis; culmo infra nodos sericeo-piloso ; laminis 
filiformibus v. subjunceis sensim acuminatis a basi ultra medium v. ad - 
apicem usque longe fimbriato-eiliatis; spiculæ sessilis gluma I": lan- 
ceolata breviter acuminata, minute v. submanifeste bidentata, carinis 
 æqualiter villosa. 
Culmi 50—70 em. alti, 3—4-nodes, teretiusculi, superne nudi, ecos- 
tati, simplices v. e nodis 1— 2 superioribus ramos floriferos solitarios 
breves simplices agentes. Vaginæ culmeæ teretes, arctæ v. laxiusculæ, 
scaberulæ v.innovationum pilis adspersæ, summa laminifera. Laminze — 
elongatæ, sectione transversa triangulares, diam. 0,7—1 mm., rigidulæ, - 
subtus excepto neryo medio sæpe scabro læves, costis 5—7 intus promi- 
nentibus (media lateralibus parum crassiore) percursæ. Racemi 6—9 
cm. longi, pedunculo longiusculo apice sæpius sericeo fulti, crassius- 
culi, sublaxiflori, sericeo-pilosi, albo-virescentes; articuli dimidiam 
spiculam sessilem æquantes. Spiculæ sessiles 8—9 mm. longæ, lanceo- 
latæ, breviter acuminatæ. Gluma I"* carinis totoque dorso villis rigi- 
dulis erecto-patulis albo-sericeis gluma 2—3-plo brevioribus dense 
vestita, obsolete 7-nervis. Reliqua ut in E. candido, cui valde affinis. 
rica bor. : W. Texas (Wright 804 ex p.); New Mexico (Wright 
2106) ; Arizona (Lemmop 2926, Rothrock 638). 
11. E. argenteus (Nees! Fl. Afr. austr. p. 95); culmo infra 
nodos plus minus barbato rarius glabro ; laminis filiformibus v. sub- 
junceis acutis, preter basin interdum fimbriatam extus glaberrimis ; 
spieulse sessilis gluma I"* lanceolata, acuminata, in */,—'/, superiore 
