250 MONOCOTYLEDONEZ. ISCHEMUM. 
nudis. Racemi graciles, 3—4 em. longi, straminei, glabrescentes; 
articuli pedicellique spicula '/,—2-plo breviores, lineares, subfilifor- 
mes, compressi, ancipites, reete disjungentes, apice excisi, altero 
margine a basi ad medium usque pilis albis suberectis rigidulis arti- 
culo duplo brevioribus ciliati, praeterea linea dorsali pilosa notati. 
Spiculz sessiles lineares, eum callo vix 1 mm. longo pilis ipsum sub- 
superantibus barbato 6 mm. longs; gluma Ir: coriaceo-chartacea, 
lineari-oblonga, obtusissima, emarginata, marginibus anguste invo- 
luta nee carinata, superne versus margines aculeolato-ciliata, cete- 
rum glabra, superne marginibusque scabra, tenuissime 8—10-nervis, 
loco nervi medii sulco angusto profundo percursa; II^ P^ æquans, 
chartacea, lineari-oblonga, obtusa, emarginata, cum mueronulo mi- 
nuto obtuso, obtuse carinata, juxta carinam depressa, carina superne 
. aculeolato-scabra, media carina fasciculo pilorum ornata, 5-nervis, 
margine hyalino ciliata ; II: I” »quans, linearis, obtusa, emarginata, 
hyalina, tenuissime 3-nervis, ciliata; ejus palea glumá paullo brevior, 
angustior, acuta, hyalina, enervis, glabra; floris g antherse ssepe 
hebetate; gluma IV* Hè" subzequans, e basi hyalina angustissime 
lineari, uninervi, glabra, sensim abiens in aristam validiuseulam 
22—26 mm. longam inferne glumá velut anguste marginatam, 
concolorem dilute brunnescentem, columná seabrá irregulariter 
flexuosä subulam rectam subsuperante; ejus palea glumam IV*" 
æquans lineari-lanceolata, obtusa, hyalina, enervis, glabra. Floris 9 
anthere 3 mm. longs. Stigmata linearia, stylis breviora. Caryopsis 
linearis, acutiuseula, trigona, embryone caryopseos medium subsupe- 
rante. Spieule pedicellatze lineari-lanceolat:;, 7—8 mm. longs; 
gluma I” acuminata, plana, marginibus anguste implicata, flexuris 
scaberrimis, ceterum glaberrima, tenuiter multinervis ; II? linearis, 
obtusa, acute carinata, carina hispidula, 5-nervis ; II et palea ut in 
sessilibus, IV* mutica. 
Asia (Hügel in h. Vind., n. 1977, sine dubio ex Ind. or.). 
Subgenus 3. DIGASTRIUM. 
Racemus solitarius; spiculæ sessiles perfecte aristatæ, pedicellatæ 
ad glumas duas vaeuas redactæ. Articuli pedicellique obovato-ventri- 
cosi, spiculas collaterales mentientes. — Ad Rottbeellias vergens. 
41. I. fragile (R. Brown! Prodr. p. 205); Benth. Fl. Austral. T, 
p. 922; Andropogon infirmus Steud. Synops. 1, p. 369. 
