ANDROPOGON. ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 493 
oce. 1, p. 205) ; rhacheos articulis villis sursum accrescentibus, sum- 
mis articulum superantibus ciliatis; gluma I"* spiculæ sessilis callo 
pilis gluma 2—4-plo brevioribus barbata, IV* stipitiformi, integra, in 
aristam perfectam abeunte. S ges 
Innovationes extravaginales. Culmi erecti v. ascendentes, simplices 
v. ramo uno alterove aucti, teretes v. altero latere alternatim appla- 
nati. Vagin® teretes, costate, glabrae v. superne barbatæ, inter- 
nodiis breviores. Ligula brevis v. breviter protracta, rotundata, sæpius 
intus pilis stipata. Laminze e basi subæquilata v. parum angustata 
rotundata lineares, setaceo-acuminate, plane, rigidulze, glaucescenti- 
virides v. glauc®, margine scabrz, utrinque scabra v. scaberule, 
basi sepius pilos, costa media crassiuscula supra latiuscule albo- 
lineata. Panieula 7—15 em. longa, rhachi communi ssepius elongata 
multinodi glaberrima, rarius abbreviata ; rami plerumque ramulosi in 
axillis glabri v. brevissime barbulati, parte nuda superne plus minus 
ciliati. Racemi 3—8 em. longi, densiflori, pilosi v. lanati, fragiles, 
plerumque viriduli; articuli pedicellique spicula sessili circ. !/, bre- 
viores, late hyalino-sulcati, longe villosi. Spicule sessiles 3—6 mm. 
longs, lanceolatæ v. lineari-lanceolate: gluma I“ chartacea v. 
coriaceo-chartacea, obtusa v. leviter bidentata, marginibus superne 
tantum implicatis, carinis setuloso-ciliatis, inferne involutis, 5—7-ner- 
vis, nervis viridibus percurrentibus v. medio breviore, secus hunc (in 
sicco) leviter depressa, in '/,—'/, inferiore dorsi plerumque appresse 
pilosa raro tota pilosa v. glabra, scabra v. levis, callo longiuscule 
barbato; II“ I» zequans, lanceolata, acuta, chartaceo-membranacea, 
l-nervis, glabra v. ciliolata; IT illis '/, brevior, oblonga, enervis, 
IV** arista spieulä 3—4-plo longior, glabra, rarissime brevissima. 
Palea pusilla, ciliata. Antherz lineari-oblonge, 1—1,5 mm. longs. 
Stigmata linearia, longiuscula. Spiculæ pedicellatz sessilibus parum 
breviores, lineares v. lineari-lanceolate, subinvolute, ad glumam I 
7-nervem redact®. 
Species valde polymorpha per totam Americam inter gradum 
36% at. bor. et 36™ lat. austr. late dispersa. 
A. Subspecies paniculä oblongá v. ovali-oblongá, rhachi plus minus elongata, 
ramis imis paniculá dimidiá breviores v. paullo longiores (a—c). 
* Artieulorum villi summi pem æquantes v. iis paullo breviores v. paullo longiores; 
cule per lanam perspicuse (a). 
a. genuinus. Nodi vaginarum sepissime barbati. Spiculæ sessiles 
