ELIONURUS. ^ ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 331 
natæ, prope os ciliatze, scaberul®. Ligula dense ciliata. Lamin® inno- 
vationum florendi tempore breves, culmeæ 15-—30 em. long, subtus 
leves, supra marginibusque scabræ, basi pilis adspers®, rigide, 
glauco-rubentes, nervis primariis utrinque 3—4. Racemus terminalis 
a vagina summa parum v. minime distans, axillares (si adsunt) 2—3, 
basi vaginati, crassi, albo-sericeo-hirsuti, spiculis dense imbricatis. 
Articuli dorso longe hirsuti, margine altero longius, altero brevius 
sericeo-hirsuti, pilis sursum accrescentibus, summis articulo longiori- 
bus. Spiculæ sessiles cum rostro 15 mm. longe, dorso pallid®, rostro 
rubello, callo 1,5 mm. longo villis ipso duplo longioribus barbato ; 
gluma I»: lanceolata, toto dorso longe albo-hirsuta, carinis hirsuto- 
ciliatis, 7-nervis ; rostri 7,5 mm. longi laciniee subulatze, patulze, utrin- 
que (intus brevius) pectinato-ciliatze ; gluma II^» dorso parce hirtula, 
marginibus implieatis ciliata ; III* II" subaquans, ciliata; IV* '/, bre- 
vior, lanceolata, obtusiuscula, 3-nervis, superne ciliata; palea quam 
gl. IV* 4-plo brevior, longe fimbriata. Pedicelli articulis zequilongi 
similesque ; spicule pedicellate 8 mm. longs, oblique lineari-lanceo- 
latze, longe acuminatz, rubelle: gluma I"* apice integra, longe rigi- 
deque pennato-ciliata, dorso parce pilosa; reliqua ut in spiculis sessi- 
libus, sed II et IV* obtusiores. Antherz 3 mm. longs. Spieularum 
odor gratus. 
Brasilia : in petrosis Serra da Chapada prov. Minarum (Langsdorft, 
Riedel). 
Obs. E. rostrato Nees affinior quam ullo ali. 
B. Innovationes mixte, intravaginalibus plerumque preponderantibus ; extra- 
vaginales florendi tempore pauce, elongate, basi squamis 1—2 elongatis 
laxe stipata. — Vaginse culmex mediæ internodiis breviores. Laminæ, præ- 
sertim culmex, plans v. laxe complicate (aqua emollitze semper plane), 
ipso apice obtusiusculz v. acutiuscul®; culmi florifero-ramosi, raro sim- 
plices (n. 2—8). 
a. Rhacheos articuli dorso facieque glaberrimi, marginibus minute scabro- 
uberuli (n. 2) 
2. E. tristis. 
Tota planta colore tristo obseure sordideque violascente. Culmi basi 
breviter ascendentes, 30—50 em. alti, graciles, 2—3-nodes, compres- 
sissimi, glaberrimi, superne breviter nudi, e nodo penultimo infra 
medium culmum sito ramum brevem floriferum agentes, raro 
ces. Vaginse subcompress®, obsolete carinatæ, laxiusculze ,glaberrimze, 
