- 
972 GnawmiNEAE. Oracuynicm. 
cavae; herbaceo -membranaceae, inferior uninervis, 
Superior subtrinervis. yh 
Flosculus inferior masculus, bivalvis: valvula in- 
ferior seu interior ovata, complicato -carinata, ob- 
tusiuscula, herbacea, subtrinervis; superior seu ex- 
terior ejusdem longitudinis, at amplior, flosculo her- 
maphrodito a suo dorso applicata ideoque ab al- 
tera ipsius flosculi valvula dehiscens, obovata, cu- 
eullata, herbaceo-membranacea, dorso profunde acu- 
teque canaliculato-biplicata, secundum nervos ca- 
rinales ciliata, bidentata, lateribus ventricoso - rotun- 
datis inferiorem valvulam laxe amplectens, quo spe- 
cies hujus flosculi singularis efficitur, "Trifolium quod- 
dam lotoides aemulantis. Stamina tria, brevia: an- 
therae versatiles, crassae, fusco -purpureae. 
Flosculus superior foemineus, masculo aliquanto 
minor et valvulae ejus superioris sulco dorsali incum- 
bens, bivalvis: valvula inferior glumae superiori ap- 
posita, ovata, acutiuscula, laevis, (trinervis), mar- 
einibus involutis amplectens valvulam superiorem ob- 
longo -lanceolatam membranaceam subbidentatam ob- 
solete bineryem, quae ipsa marginibus pistillum in- 
volvit; utraque valvula in fructum abit atque duratur. 
Lodicula simplex, emarginata, nuda, inter pistil- 
lum et valvulam inferiorem. 
Stamina ut in masculo. 
Ovarium lanceolatum, compressum; stylus basi 
subbulbosus, profunde bipartitus, albus; stigmata 2, 
aspergillhiformia, purpurea. 
Observ. Proximum accedit hoc genus Isachne ge- 
neri Bro wnii, sed differt glumarum exiguitate et valvulae 
superioris masculi flosculi structura singulari. 
1l. OTACHYRIUM JUNCEUM. 1 
Panicum Pterygodium, Trin. JVMonogr. ined. 
Radix caespitem protrudens, repens, ramis flagellifor- 
mibus. Culmi conferti, erecti, simplices, filiformes, basi 
subbulbosi, a spithama ad pedem alti, quadri - quinquenodes, 
subgeniculati, striati nodisque glabri, inferne vaginis emar- 
cidis, superne foliis vestiti, sub panicula nudi; nodi sericeo- 
