ELIONURUS. ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 329 
b. Aristæ columna breviter appreseque hirtula, pilis ipsius diametro brevioribus. 
Var. Karwinskyi. Folia... Racemi 3*5, 10—12 em. longi, laxiuseuli, 
rhachi puberula. Spieule j' 6 mm., 8 9 mm. long, ambæ lineari- 
oblongz, toto dorso densissime appresseque sericeo-pilosulz. Arista 
2,2—2,4 cm. tantum longa, columna flexuosa, subula sublongiore. 
Mexico (Karwinsky in h. Vind.). — Fere species propria. Speeimen 
imperfectum. 
XXIV. ELIONURUS Humb. et Bonpl. ap. Willd. Spec. 4, p. 941 
(errore typ. 741), char. fals.; Kunth in Mém. Mus. 2 (1815) p. 69, 
char. reform. ; — Benth. et Hook. Gen. Pl. 3, p.1129 excl. E. hirsuto. 
—Rottboellia sect. II. Apogonia Nutt. Gen. 1, p. 83.—Andropogonis 
spec. ap. Trin., Steud. 
Racemi subcompositi in apice culmi ramorumve solitarii, multi- 
articulati; rhacheos fragilis articuli crassiusculi, oblique disjungentes. 
Spiculz ad quemvis rhacheos nodum binze, inter se similes, uniflorz, 
mutiez (saltem gluma IV*), a dorso compress®; primaria pedicellata, 
d' (rarissime neutra), secundaria sessilis, 8, demum cum rhacheos 
articulo accumbente deeidens. Hujus gluma I"* chartacea v. subco- 
coriacea, sæpius bidentata, bifida v. biaristata, plana v. convexula, 
marginibus angustissime inflexa, flexuris (carinis) plus minus ciliatis, 
juxta (scil. intra) carinas sspissime stria balsamifera translucida 
notata v. carinis verrucis penicilliatis ornata, II^" membranaceam, 
mutieam marginibus amplectens; IIP et IV* hyalinze, muticze; palea 
O v. perpusilla. Lodiculze euneatz, truncatz. Stamina 3. Stigmata 
oblonga, stylis plerumque duplo longiora, ad spiculz latera exserta. 
Caryopsis oblonga, a dorso compressa, facie hili planiuscula, embryo- 
nis convexula, embryone caryopseos dimidium æquante v. subæ- 
quante. 
Gramina plerumque perennia, humiliora, aromatica, zonam tropi- 
cam et subtropicam raro temperatam utriusque orbis incolentia, in 
Asia rarissima. — Culmi cæspitosi, plerumque erecti, infra nodos vagi- 
nales subtumidi, estriati, fareti. Ligula brevissima, truncata. Lamine 
e basi zquilata lineares, ssepius anguste, vernatione conduplicata, 
adult planz v. plus minus complicatz, costa media tenui 1-nervi 
supra non albolineata munitz, nervis lateralibus swpius paucis. Ra- 
cemi erecti; rhacheos articuli lineares, compressi, marginibus cras- 
y 
