ROTTBOELLIA.  ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 279 
CONSPECTUS SUBGENERUM 
A. Racemi subeompositi racemoso-digitati v. paniculati (rarissime in speciminibus macerrimis 
— 
a. E OLJULT S. 4 z 31 waa 1 Tma 1 chartacea Phacelurus, 
b. Racemi paniculati; pia unifloræ ; gums I"? chartaceo-membranacea 
A a TEE een TE 6 nah Thyrsostachys. 
B. Racemi subcompositi v. spicæ spuriæ in apice culmi ramorumye solitarii. 
Racemi v. spicæ spuriæ eylindrici, fragiles, articulis recte disjungentibus, 
n apice foramine pertusis v. profunde excavatis........... Colorhachis. 
spuriæ (raro mi) compress», minus fragiles raro tenaces, arti- 
ud dier v. minime C disjunetis apice non exca- 
2 
= 
vatis planis; spiculo s$quales....., ieu ennt Hemarthria. 
. Spicæ spuriæ compressæ, R articulis (eum pedicellis connatis) ; 
recte disjungentibus, disjunctis apice cavitates 2 contiguas septo dis- 
tinetas exhibentibus; spiculæ primariæ a secundariis forma sexuque 
BHHOTEIR. u ea ee es MEN E Peltophorus. 
eo 
Subgenus 1. PHACELURUS. 
Phacelurus Griseb. Spicil. Fl. Rum. 2, p. 423; Pholiurus Trin. in 
Spreng. n. Entdeck. 2, p. 67 non Fund. 
Racemi subeompositi duo—plures secus rhachin communem race- 
moso-digitati, sessiles, plus minus compressi ; rhacheos parum fragi- 
lis v. subtenaeis rectæ v. subflexuos® articuli plus minus trigoni, 
recte disjungentes, disjuneti apice non excavati sed plani; pedicelli 
liberi, artieulis appressi vel ab iis subdistantes. Spieule omnes sub- 
conformes, muticze, biflorze, flore superiore 8, inferiore c? v. in pedi- 
cellatis ambo 5 ; gluma I^* coriacea v. chartacea, acuta v. obtusius- 
cula, marginibus anguste v. latiuscule inflexa, callo brevi rectangulari 
parum distincto. Stigmata stylos equantia v. superantia, prope mediam 
spiculam exserta. Spiculz pedicellatze plus minus a latere compressa, 
gluma P^ (saltem superne) medioearinata. 
Gramina elatiora, in temperatis Asie minoris et Europ» vicinze, 
Himalayz, Chine et Japoniæ crescentia. — Subgenus ab Ischemo 
segre separandum, genera duo quam arctissime conjungens, sed etiam 
Vossie valde affine. A priore precipue spiculis muticis, ab ulteriore 
gluma I"* non caudata differt. : 
Perennes. Culmi elati (0,5—2 m. alti), erecti, multinodes, tortis 
culi, glaberrimi. Vaginæ teretiusculæ, arctæ, inferiores internodia 
superantes, summa cum lamina evoluta. Laminæ vernatione convoluta, 
adultæ plane, sæpius latiusculæ, setaceo-acuminatæ, costa media 
