ANDROPOGON.  ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 547 
Subgenus 10. CHRYSOPOGON. 
(Chrysopogon Trin. Fund. Agrost. p. 187; Benth. et Hook. Gen. 
Pl. 3, p. 1135; Centrophorum Trin. 1. c. p. 106, t. 5; Raphis Lour. 
Fl. cochinch. p. 552, non Linn.) 
Racemi subcompositi in apice culmi ramorumve paniculati (pani- 
cula vera), omnes pedunculati, szepissime uniarticulati (ad spieulam 
9 unam duasque Z v. neutras redacti), raro pauciartieulati ; rhaeheos, 
ubi adest, fragilis articuli pedicellique spieularum 5 lineares, filifor- 
mes, dorso convexulo sine sulco, disjuneti apice non appendiculati. 
Spiculz sessiles (ubi plures adsunt, omnes) 2, sepius a latere com- 
presse, aristatz;e: gluma I= late involuta v. complicata; I“ subdis- 
tinete carinata, plerumque aristata; III: hyalina, IV* linearis, integra 
v. breviter bidentula, aristam sæpius perfectam exserens. Lodieule 
parva, glabrze. Stamina 3. Ovarium glabrum; stigmata linearia, 
stylis 2—4-plo longiora, sæpius prope basin spiculæ exserta. Caryopsis 
linearis, a latere compressa, ventre ssepius costulis 2 notata, embryone 
caryopseos medium zquante, scutello lineari-oblongo. Spiculæ pedi- 
cellatæ g, raro neutrz, a dorse compressze, mutic® v. aristulatee. 
Gramina angustifolia, przeter A. pauciflorum perennia, zonam tro- 
picam, subtropicam et hine inde temperatam przecipue orbis antiqui 
(excepta una specie americana) incolentia, paniculæ ramis sæpe verti- 
cillatis basi nudis paucifloris, spiculis angustis insignia. — Vaginarum 
nodi glabri. Panieule rami proprie verticillati, primarii bini—8" (in 
A. subtili tantum solitarii), sepe a basi ramulosi, verticillis inde ramis 
secundariis locupletatis. 
§ 1. Arista glumze IV** perfecta. — Lamin:e vernatione conduplicat, 
adultze planæ v. siccando complieatze (n. 120—128). 
A. Pedicelli spicularum lateralium glabri, raro minute ciliolati, subfiliformes v. 
e es, erecti. — Vagins compresse, carinatz. Spicule 8 gluma 
IV* 1-nervis, ex apice integro v. brevissime bidentulo aristam exserens 
validam raro subgracilem jam in inferiore glums parte concretam, 
eujus columna atro-fusca tota superficie albo-hispidula v. scaberrim 
recta v. raro in '/s superiore plus minus flexuosa subulam paullo iiia 
coloratam rectam scabram æquat v. subæquat (n. 120—122). 
120. A. subtilis (Steud. in Zolling. Syst. Verz. p. 59; Synops. 1, 
