ANDROPOGON.  ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 423 
precedentibus; gluma II late lanceolata, acuta, carina serrulato-scabra, l-nervis v. 
nervis 2 submarginalibus snbobsoletis aucta, margine hyalino sspius ciliolata ; III 
2-neryis, marginibus implicatis ciliata; IV* quam IIda !/, brevior, ad 1/, usque in 
lacinias 2 acutas fissa, inter lacinias aristata. Anthers 1,8—3 mm. longa. Spieulz 
tabescentes 2—5 mm. longs, 1—2-glumes ; pedicelli articulis simillimi, Spicula 8 
breviores (n. 45—47 
+ Culmi e nodis 4—5 p 
Racemi bini (n. m 
ug Mithe 
n teens! 
45. A. argyreus (Schult. Mant. 2, p. 450); rhacheos articulis ` 
villis densissimis, summis articulo duplo longioribus, vestitis ; gluma 
I^* prseter carinas enervi, dorso lævi; palea glumä II“ 4-plo breviori. 
— A. argenteus Ell.! Sketch p. 148 non DC.; A. Muehlenbergianus 
Schult. Mant. 2, p. 455; A. Belvisii Desv. Opuse. p. 67, Beauv. 
Agrost. t. 23 f. 4 (gluma I^^ tamen in hac tridentula delineatur). 
Culmi graciles v. subrobusti, 60—100 em. alti, infra nodos sub- 
pruinosi, a '/ inferiore ramosi ; rami floriferi inferiores bini, graciles, 
elongati, superiores subfastigiati, 1—2-nodes, simplices v. ramulo 
aucti, erecto-patuli, glaberrimi v. ad nodos barbulati. Vagina gla- 
bra, subseaberul@. Laminse 10—30 em. longs, innovationum compli- 
cate, culmeæ plane 3—4 mm. late, obscure virides, demum cum 
culmo sepius rubentes, utrinque scaberul: v. scabræ, glabr& v. basi 
ciliatæ, subtus interdum subpruinoss. Spathz proprie 5—7 cm. 
longz, obscure virides v. violaceo-suffusze, demum a racemo longe 
remot&. Pedunculus communis apice dense barbatus. Racemi 3—5 cm. 
longi, ereeti v. subpatuli, sericeo-villosi; articuli pedicellique spieula 
8 parum—'/, breviores; spieule 9 lineari-lanceolate, viridule v. 
livide violaceo-suffuse, 5—6 mm. longs, inter lanam suboecults: 
gluma I" a '/, inferiore Honge are Actis, dieere v. obsolete 
bimucronulata, marginibus anguste implicata, carinis culeolat 
ciliata, inter carinas ; subdepressa, callo pilis oma dimidia breviori- 
bus barbato; III* acuta, ciliata; IV* glabra v. ciliata, aristam 14—16 
mm. longam emittens, columna brevissima 1—2-spira, subula basi 
subundulata. Antheræ 2 mm. longa. Spiculæ tabescentes subulatæ, 
1-glumes, 2—3 mm. longe, patulae. 
In Civitatibus Unitis Ameriez borealis a Maryland et Delaware 
usque in Floridam (Curtiss 3637) et occidentem versus ad Texas et 
Colorado (ex Wats.). Conf. A. Gray, Manual, ed. 5, p. 652. 
Obs. Sub hac specie Andropogonem divaricatum Linn. Spec. ed. 1 l, 
p. 1045 latere suspicor. Diagnosis Linnæana parum quidem nis 
