SPODIOPOGON.  ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 183 
8 1. (Euspodiopogon). Spieule biflorz, lore inferiore Z. Racemorum 
rhachis 2—4-artieulata, articulis demum cum spicula sessili disjun- 
gentibus. — Culmi graciles, glaberrimi. Vaginze teretes. Gluma I» 
explicata ovato-lanceolata, dorso complicata, pilosa, 7—9-costata ; 
II^ mucronulata ; II: I*» æquans v. subæquans, hyalina ; IV* Iim 
æquans v. ea paullo brevior, hyalina nisi ad aristz ortum rigidior, 
laciniis hyalinis subulato-lanceolatis acutissimis, glabra, inferne tri- 
nervis (n. 1—3) 
a. Perennes, culmo erecto, laminis sessilibus, ligula brevissima. — Rhizoma 
crassum ; innovationes extravaginales, crasse, imbricato-squamatz. Va- 
ginæ arct®, prorsus (etiam nodis) glaberrim:, striatze, internodia (ex- 
ceptis imis) superantes. Ligula 1—1,5 mm. longa, rotundata, sordide v. 
brunneo-membranacea, denticulata, glabra, dorso sepius pilis stipata. 
Panicule oblongz v. ovato-oblonge rhachis glaberrima v. ad nodos 
barbulata, ramis tenui-filiformibus glaberrimis inferne longe nudis, infra 
racemum incrassatis; articuli erassiusculi, clavati, compressi, margini- 
bus a basi ad apicem dense ciliati, demum recte disjungentes, disjuncti 
apice cicatricem ovalem altero latere ciliatam exhibentes. Gluma Ima 
spiculæ sessilis chartacea, acutiuscula v. obtusiuscula, apice hyalino bre- 
viter bidentata ; IId@ chartacea, ovato-lanceolata, obtusiuscula vel biden- 
tula; IV? oblonga, usque ultra medium fissa; palea glumam zequans, 
ordto-laucooiata, hyalina, enervis, glabra. Tadili glabræ. Spiculæ 
pedicellatæ densius villosæ, glumis acutioribus. 
1. Sp. sibiricus (Trin.! Fund. p. 199) ; culmo simplici, laminis e 
basi angustata lineari-lanceolatis 9—18 mm. latis, stigmatibus infra 
apicem spieule exsertis. — Andropogon sibiricus Steud. Synops. 1, 
p. 398. 
Rhizoma stolones elongatos edens. Culmi 0,7—1,5 m. alti, 5—6-no- 
des, superne longiuscule nudi, substriati. Laminze 15—30 cm. longie, 
(summa abbreviata), longe cuspidato-aeuminatze, erecto-patulz, viri- 
des, utrinque v. saltem subtus pilis appressis basi tubereulatis hirtulae 
raro omnino glabra, basi plerumque fimbriolat®, costa media cras- 
siuscula plurinervi munitze, nervis lateralibus primariis utrinque 4—5, 
seeundariis inter illos 5"* tenuissimis neutris prominulis percurse. 
Panieula 10—20 em. longa, subnutans, patens, rhachi communi sub- 
undulata, tenui ; rami primarii ad nodos solitarii, basi v. raro supra 
basin secundarios 2—3"^ primarium sub:equantes plerumque simplices 
agentes, ceterum simplices v. infra apicem ramulo aucti, infimi eire. 
1/ V. !/, panicule zequantes, sepius nutantes. Racemi 1—2 em. longi ; 
