* 
ANDROPOGON.  ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 543 
simplicibus; racemis multiartieulatis, 5—10 em. longis; spiculæ ses- 
silis gluma I™ ad flexuras obsoletas muricata, II® mutica, IV* mutica 
v. imperfecte aristata. 
Rhizoma crassum, cum radicis fibris crassis aromaticum. Innova- 
tiones extravaginales. Culmi 2 m. alti, altioresve, inferne 1 cm. diame- 
tro, multinodes, superne teretiusculi, vaginati. Vaginæ innovationum 
complanato-compressæ, equitantes, culmeæ compressæ, carinatæ, 
omnes glaberrimæ, internodiis paullo breviores v. longiores. Ligula 
ad marginem membranaceum obsoletum redacta. Laminæ inferiores 
40—90 cm. longæ, 4—10 mm. latæ, supra albidæ, glabræ v. supra 
basin puberulæ, costa media tenui uninervi subtus carinante et ner- 
vis lateralibus primariis utrinque 6—12 non prominentibus munitæ, 
canalibus aériferis percursæ (conf. Duval-Jouve Mém. Ac. sc. Mont- 
pell. 7, t. 17, f. 9). Panicula 20—30 cm. longa, oblonga, e verticillis 
' 8—12 formata, rhachi communi robusta. Verticilli inferiores usque 
ad 20-radiati, radiis (racemorum peduneulis) erecto-patulis 1—5 em. 
longis tenui-filiformibus glaberrimis v. superne scaberulis. Racemi 
graciles, laxiflori, minus fragiles : articuli spiculam sessilem zequantes 
v. superantes v. ea parum breviores, glabri. Spieule plus minus gri- 
seo-violascentes, raro flavescentes, glabrae; sessiles 4—6 mm. longs, 
lineari-oblong&, subobliqu& : gluma I= coriacea, acuta, marginibus 
late implieatis, flexuris subobsoletis muricatis, 2—4-nervis, callo ad 
latera v. etiam antice brevissime v. obsolete barbato; II“ coriacea, 
l-nervis, carina muricata, marginibus hyalinis ciliolata; HI* I" sub:e- 
quans, lanceolata, acuminata, marginibus inflexis, 2-nervis, ciliata ; 
IV: II» zquans, lanceolata, 1-nervis, modo integra, modo bidenticu- 
lata, inter denticulos mucronata v. aristata, ciliata; palea glumä 
duplo brevior, obtusa, enervis, glabra. Anthere 2—2,7 mm. longs. 
Spieule pedicellat® lineari-lanceolat&, sessilibus similes, sed gluma 
II“ lsevis, IV* mutica. 
Cum hujus graminis rhizomata radicesque officinalia sint, characte- 
rem anatomicum addo quo vera a falsis facillime distinguantur : 
Radieis fibre in medulle cellulis parenchymaticis suborbicularibus 
granula amylacea duplicis forms» continent : alia simplicia, subglo- 
bosa, intus cavitate fere stellari munita, diam. 0,01 mm.; alia e gra- 
nulis partialibus 2—4 ita composita, ut sæpissime tetrades tetraödri 
sphieriei formå componant. Tetradum diam. 0,015 mm., granulorum 
partialium 0,0066 mm. Substantia aromatica in speciminibus herba- 
riorum plerumque jam exhalata videtur; equidem neque olfactu 
percepi neque sub microscopio inveni. 
