DIMERIA , ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 89 
approximato aucta ; II^ lanceolata acuta v. mucronulata, carina in 
parte superiore pilis longiusculis conspersa, ceterum glaberrima v. 
vix scaberula; II paullo brevior, linearis, superne dilatata, obtu- 
siuscula, hyalina, enervis, glabra; IV* quam II“ !/, brevior, latius 
linearis, hyalina, superne membranacea, acute bidentata, glabra ; 
ariste 8—9 mm. longz columna castanea glaberrima e glumis vix 
exserta subulä rectä v. basi paullulum torta 2—3-plo brevior. 
In insula Ceylon (Macrz;); ad Pasdun Korle (Thwaites 3863), ad 
Kulutara (Trimen). 
12. D. leptorhachis ; laminis sublanceolato-linearibus basi 
angustatis a vagina distinctis, culmo infra nodos cerifero. — D. pilo- 
sissima Thwaites Enum. Pl. Zeyl. p. 369 non Trin. 
Culmi 60—100 em. alti, subgraciles, 7—8-nodes, infra nodos prunosi, 
superne breviter v. minime nudi. Vagina teretiuscule superne sub- 
carinat®, nodis breviter barbatis, internodiis longiores, im:e breves, 
subfuscæ. Lamin® 15—25 cm. longæ, 6—10 mm. lat, summa 3—4 cm. 
longa, angusta, rigide, glaucescentes, nervis lateralibus primariis 
utrinque 4—8, secundarüs atque tertianis inter hos singulis tenuissi- 
mis, nullis prominentibus, pereursze. Racemi 4—10 secus rhacheos com- 
munis glaberrim& nodos alterni v. oppositi, 9—12 em. longi, simpli- 
ces v. basi ramulosi, graciles, sublaxiflori, plus minus pilosi ; rhachis 
gracillima recta glaberrima v. ad nodulos minute ciliata, internodiis 
squalibus 3,5—5 mm. longis; pedicelli 1 mm. longi clavati retusi. 
Spieule 6—7,5 mm. long&, callo 0,7—0,8 ram. longo obtuso albo-bar- 
bato. Gluma I™ coriacea, acuminata v. mucronata, acumine leviter 
extus curvato, præter nervum medium nervis utrinque 2 tenuissimis 
percursa, carina lateribusque scaberrima superne pilosa v. glabra ; 
II? acuta, acuminata v. mucronulata, toto dorso v. superne tantum 
pilosa ; III* I»*» subsequans, lanceolata sursum dilatata, obtusiuscula, 
hyalina, enervis, ciliata; IV* aeute bidentula membranacea, glabra 
v. ciliolata ; aristee 9—14 mm. longi columna fusca subulá basi laxe 
uad 3-plo brevior. 
Subspec. a. genuina. Folia preter fimbrias longas prope laminæ 
basin glaberrima. Racemi 6—10, minus laxiflori: rhacheos internedia 
spiculis duplo breviora (3,5 mm. longa), prope nodulos ciliolata; pedi- 
celli extus ciliati; spieule 6 mm. longa, callo barba ipso longiori 
cincto, brunnescentes. Gluma I"* superne longe pilosa, ad latera ` 
carinamque scaberrima. Arist: 9—10 mm. longæ columna levis. 
In insula Ceylon, Thwaites C. P. 24, 3261. Insuper variat ex Trimen 
spiculis glabriuseulis. i 
