272 MONOCOTYLEDONEJE. URELYTRUM. 
longe nudi. Vaginz teretes, arcte, glaberrimæ, internodia sspe 
superantia, summa cum lamina. Ligula brevis, rotundata, membra- 
nacea, glabra v. intus pilis stipata. Laminze e basi »quilata lineares, 
plans, costa media tenui uninervi obtusa supra albolineata percurs®. 
Racemus elongatus, erectus, strictus ; articuli spieulam sessilem sub- 
superantes vel æquantes, dorso subconvexo viridi-striati, appendice 
spiculæ opposito szepe inzequaliter bilobo. Spiculæ sessiles cum callo 
obconieo acutiusculo 2—3 mm. longo basi lateribusque breviter albo- 
barbato 10—11 mm. longs, lineari-lanceolatze, violascentes; gluma 
I»: marginibus angustissime inflexa, flexuris setuloso-eiliatis v. muri- 
eulatis; IV* quam II“ paullo brevior, late oblonga, obtusiuseula ; ejus 
palea glumá paullo brevior, e basi ovatá convolutä lineari-oblonga, 
obtusa, subbinervis. Pedicelli articulis paullo breviores, eis similes 
nisi angustiores, complanati, apice breviter bidentati, scabri. 
1. U. agropyroides; gluma I"* spicularum sessilium superne 
setuloso-eiliata, spieularum pedicellatarum in aristam 1,5—2,5 em. 
longam abeunte. — Rottboellia agropyroides Hack. in Bolet. Socied. 
Solar. 3. D: 135, tab. 2, f. T. 
Culmi 50—70 em. (v. plus ?) alti, infra racemum scaberuli. Laminze 
10—15 em. long, acutissim®, plane, circ. 6 mm. latze, utrinque 
hirtulie, margine seaberrim:e, basi longius pilosæ, nervis lateralibus 
vix prominulis. Racemus 15—20 em. longus, violascens, glabrescens ; 
articuli scabri, glabri nisi basi eiliati, appendice inzequaliter bidentato 
seabro-ciliolato. Spieularum sessilium gluma I fere cartilaginea, 
acutiuseula, dorso convexiusculo scabro-punctata, bicostata ; II“ pri- 
mam zequans, late linearis, obtusa, infra apicem cucullata, 3-nervis, 
carina superne setuloso-ciliata ; IN quam I“: paullo brevior, lanceo- 
lata, obtusiuscula, glabra; ejus palea gluma paullo brevior, lineari- 
oblonga, marginibus implicata, glabra; floris / anthere 5 mm. 
longze. Gluma IV* eum palea sua glabra. Spiculz pedicellat® neutræ 
(semper?), parvze, sine arista 2—3 mm. longs: gluma Ir: ovato- 
oblonga, eoriacea, sensim in aristam 15—25 mm. longam in spiculis 
inferioribus abbreviatam hispidulam patentem abiens ; I“ [= zequans, 
carinata, obtusa ; IIT" parva, vacua ; reliqua 0. 
Angola, Lobango, prope Humpata et Huilla in campis cultis (New- 
ton in h. meo). 
2. U. squarrosum ; gluma I" spieularum sessilium ad flexuras 
marginales fere a basi ad apicem usque muricata, spieularum pedi- 
