ANDROPOGON. ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 377 
incolori parco, supra fasciculo cellularum sclerenchymaticarum 
munita, nervis lateralibus prominulis. Spathe proprie 5—6 cm. 
longz, angusta, strictze, lamina brevissima terminate, pedunculum 
glabrum subsquantes v. eo parum breviores. Racemi graciles, eire. 
5 em. longi, virides, circ. 10-articulati, glabrescentes ; articuli spicula 
sessili '/,—'/, breviores, subgraciles, spicula dimidio angustiores, 
appendice oblique eupulato postice irregulariter bidentato, margine 
exteriore (pedicellum spectante) infra apicem breviter ciliati, ceterum 
glabri, lz:ves, basi pilis ipsis triplo brevioribus stipati. Spiculæ ses- 
siles lineari-lanceolat®, 9 mm. longe : gluma I™ coriacea, longe acu- 
tata, minute bimucronulata, carinis dense serrulato-scabris, manifeste 
1—9 nervis, glaberrima, nitens, callo basi antice brevissime, postice 
longius barbato; II^ prima paullo brevior, lineari-lanceolata, obtu- 
siuscula, 1-nervis, carina scabra, marginibus hyalinis ciliata; II pri- 
má '/, brevior, lineari-oblonga, obtusa, binervis, marginibus implicatis 
ciliata; IV: III» æquans, ad ?/, usque fissa, ciliolata; ariste 16 mm. 
longe columna vix exserta subulä albá basi leviter tortä '/, brevior; 
palea minuta, ciliata. Pedicelli graciles, articulis parum breviores, 
lineares, obsolete eupulati, margine exteriore (articulum spectante) 
eirro subapieali denso longiuseulo ornati, ceterum glabri. Spieulae 
pedicellatze 7—8 mm. longs lineari-lanceolatze gluma I”: acutissima, 
apice leviter extus curvata, multinervis, carinis scabra; II^, III‘, IV* 
sensim subdecrescentes, lanceolatz, ciliolatæ, II: et IV 3-nerves, III: 
2-nervis. Antherz 2,5 mm. longa. 
America bor. : inter W. Texas et El Paso in New Mexico (Wright, 
804 ex p. et 2105); New Mexico pr. Silver City (Greene). — Affinis 
A. tenero. 
4* Artienli margine glumaque I=* glabri; pedicelli spieule masculz v. neutre sed 4-glumis muticæ 
glabri v. altero margine eirro subapieali ornati, — Racemi stricti, pedunculo glabro spatham 
spicula sessili paullo—1/4 breviores, appendice antice exciso postice protracto inzqualiter 
bidentato coronati, Callus glumz I=* glaber v. basi tantum pilis paucis obsitus (n. 16,17). 
16. A. tener (Kunth. Revis. Gram. 2, p. 565 ampl.), pedicello spi- 
culæ mascule v. neutrius margine exteriore eirro subapicali vestito - 
v. toto ciliato, apice obsolete bidentato; spiculæ sessilis 4—5 mm. 
longz gluma I^* 5—7-nervi. 
Culmi graciles v. gracillimi, 20—60 em. alti, teretiuseuli, simplices v. 
ramis floriferis 1—3 brevibus v. elongatis simplicibus aucti. Vaginse 
teretiusculze, innovationum distinctius, culmeæ obsolete carinatze, in- 
