420 GRAMINA NOV HOLLANDLE. 
Amphibromus, N. ab E. 
Spicule 2-3-flore, flosculis superioribus pedicellatis, rha- 
chilla insertionibusque barbatis. Glume duz, herbacee, 
ineequales, flosculis breviores. — Floseuli (an sexu distincti ?) 
bivalves, valvula inferiori chartaceo-rigida (3 ) infra apicem 
membranaceum bifidum vel tridenticulatum aristata, arista 
stricta, siccando ad horizontem reflexa, nec geniculata; su- 
periori teneriori paulo breviori, dorso plana, margine acute 
inflexa ciliataque, binervi, apice integra. Lodicule dus lan- 
ceolate, membranacee. Stamina? Ovarium compressum, 
glabrum; styli brevissimi, discreti; stigmata laxe plumosa. 
Caryopsis oblonga, compressa, libera, valvule superioris mar- 
ginibus circumdata. 
Panicula effusa ramis geminis gracilibus, paucifloris. Ha- 
bitus potius Avene quam Bromi. A Deschampsia differt flos- 
culis durioribus, arista fortiori herbacea, valvula superiori a 
tergo depressa, marginum plica laterali argutissima ciliata ut 
in Bromeis. Fructus autem est Deschampsiz. 
Culmus longus, fistulosus, mollis, siccando collabens, glaber. 
Nodi glabri. Folia superiora lineari-subulata, brevia, glabra. 
Ligula exserta, membranacea. Panicule rami racemoso-di- 
tristachyi. Spiculee demptis aristis 4-lin. longee. Glume basi 
purpuree, ovate, obtuse ; inferior 1} superior 2 lin. longa, illa 
uninervis, hec trinervis. Valvula inferior 3 lin. longa, basi 
utrinque fasciculo pilorum notata, dorso convexa, scabra, 
apicem versus 5-nervis, ipso apice brevi spatio membranaceo 
bifido vel dentato; seta infra apicem orta, rigida, scabra, 
humida stricta recta, sicca medio reflexa. Caryopsis rufa, 
punctulata. 
Occurrunt specimina, probabiliter morbosa, quibus rudi- 
mentum ovarii utriculo laxo molli membranaceo longitudine 
valvule superioris penitus includitur. 
In Insula Van Diemen, Gunn n. 995. 
Bromus arenarius Labill. Var. 8. maior, (Bromus australis 
R. Br. Br. arenarius Labill.) Swan River, Drummond. 
