ISCHEMUM. ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 231 
Rhizoma breviter stoloniferum. Innovationes extravaginales. Culmi 
basi decumbentes, dein ascendentes, graciles, teretiusculi, ad latus 
vaginæ canalieulati, glaberrimi, inferne foliifero-ramosi, superne 
sepe ramum floriferum edentes, ibique plus minus nudi, vix incrassati. 
Vagine subeompresse, superne carinatze, laxisucule, glabra, plus 
minus scabra v. læviusculæ, internodiis breviores, summa subinflata 
cum lamina brevissima. Ligula brevissima, fusco-membranacea, 
rotundato-truncata, ciliata v. glabra. Laminse lineari-lanceolatze, seta- 
ceo-aeuminatse, innovationum et culmeæ inferiores basi valde angus- 
tatæ demum articulatim disjunete, culmex superiores basi rotunda- 
tæ, insertione angusta, omnes plane, rigidule, virides v. subtus 
glauco-pruinoss, glabrze v. appresse puberulie, excepto margine sca- 
berrimo lzeves, costa media tenui percursze. Racemi 3—16, digitati v. 
corymboso-paniculati, corymbo e fasciculis 2—4 alternantibus subses- 
silibus formato, inzequales, graciles, livide violascentes, pilosi; articuli 
pedicellique spicula duplo breviores, apice subdilatati, inferne eum 
spiculze callo plus minus connati,angulo exteriore pilis griseis v. fulvis 
rigidulis articulum »equantibus, angulis interioribus pilis parcis brevi- 
bus ciliati v. pedicelli glabri. Spiculz sessiles cum callo lineari basi 
pilis fulvis $. griseis stellato-barbato v. superius etiam  pilosulo 
6—9 mm. long: (sine callo 4,5—5 mm.), lanceolatæ v. ovato-lanceo- 
latæ; gluma I”: herbaceo-chartacea, a medio sensim acutata, minute 
bidentata, marginibus toto decursu latiuscule inflexis, carinis exala- 
tis scabro-ciliolatis, dorso plana, elevato-2—4-striata, intus 5—7- 
nervis, dorso ad strias scaberrima, glabra; II?» I» subsuperans, char- 
tacea, ovato-lanceolata, acuta v. apice obtusiusculo mucronata, in */, 
superiore carinata, carina superne longe pilifera raro glabra, cete- 
rum scabra, obsolete 5-nervis; II paullo brevior, membranacea, 
ovato-lanceolata, acutiuseula v. obtusiuscula, 1—3-nervis, glabra v. 
superne ciliata ; ejus palea similis, obtusa, minute bidentula, margine 
hyalino implicato glabra; floris c? antheræ 2,5 mm. long; ; IV* quam 
II“ paullo—'/, brevior, hyalina, oblonga, integra v. breviter bidentata, 
3-nervis, glabra, aristam exserens jam in '/, superiore conerescentem 
gracillimam 8—12 mm. longam imperfectam v. columná brevissimá 
latente instructam ; ejus palea glumam subsuperans, lanceolata, hya- 
lina, enervis, glabra, scabro-punctata. Antherz floris 8 1,5 mm. 
long v. tabescentes. Stigmata linearia, stylos sequantia. Spieulze pedi- 
cellate sum callo 1,5 mm. longo basi pilis 5 mm. longis rigidulis 
dense stellato-barbato 6 mm. long, lanceolatæ; gluma II”: lanceo- 
lata, acutiuscula, specie medio-carinata, carina Mida ciliata, 7—10- 
striata, scabra, glabra ; reliqua ut in spieulis sessilibus. ^ 
