329 
albidis basi tuberculatis sparse hirsutae; ligulae breves, mem- 
branaceae, integrae, a dorso longe ciliatae : laminae lanceolatae, 
6-8 cm. longae, apice attenuatae, 0-5 cm. latae, basi auriculatae, 
abrupte constrictae, glabrae. Panicula vix exserta, anguste 
contracta, 12 cm. longa ramis ramulisque tenuibus. Spiculze 
oblongae, obtusae, 3 mm. longae, glabrae. Glumae inaequales ; 
inferior 3. -nervis, 2mm. longa; superior 7-nervis, 2°5 mm. longa. 
Anthoecium inferum ad valvam 7-nervem spiculam aequantem 
reductum. Anthoecium superum 3 mm. longum appendice 
0-3 mm. longo incluso.—Panicum trachyrhachis var. tenuior 
Benth. Fl. Austral. vii. 490 (1878) p.p. 
QUEENSLAND : Percy Island, Cunningham}. 
With some hesitation this species is included in Ichnanthus. 
The basal appendage is not very obvious and may be only 
analogous to the slightly elongated internode, found in Panicum 
capillipes Benth. and also in P. stipitatum Nash, from North 
America. The general habit with geniculate branching culms 
and flat lanceolate leaves is rather more in accord with 
the Australian species of Ichnanthus than with the Australian 
species of Panicum. The one specimen quoted is scanty and 
incomplete so that it is impossible to dissect a number of spikelets 
for examination. 
3. I. australiensis (Domin) Hughes nov. comb.; Panicum 
australiense Domin in Journ. Linn. Soc. xli. 271 (1912); P: 
pauciflorum Benth. Fl. Austral. vii. 488 (1878), p.p., non R.Br. 
V. AUSTRALIA: between the Ashburton and De Gray rivers, 
Clement!; between the Ashburton and Yule Rivers, Clement !. 
N. Territory : Lat. 17°58, MacDougal Stewart's Expedition ; 
near Alice Springs, Giles; upper Victoria River, Mueller. 
4. Y. Muelleri Hughes nov. sp.. 
usque ad 20 em. alta. Culmi lignosi, geniculato- 
ascendentes, multinodi nodis pubescentibus, iterum ramosi. 
Foliorum vaginae solutae, striatae, pilis brevibus basi tuberculatis 
indutae; ligulae breves, dense ciliatae; laminae lineares, laxe 
convolutae, usque ad 8 cm. longae et ad 0-3 cm. latae applanatae. 
Panicula non exserta, ovata ; rami ramulique tenuissimi, patentes. 
Spiculae ovato-oblongae, acuminatae, 5 mm. longae, glabrae. 
Glumae inaequales ; inferior ovata, acuminata, 7-nervis, 3 mm 
longa; superior 9-nervis, spiculam aequans. Anthoecium inferum 
ad valvam 7-nervem spiculam aequantem reductum. Anthoe- 
cium superum g , 3 mm. longum appendice 1 mm. longo incluso. 
W. Avstraia: near King’s Sound Mueller!. 
5. I. majuseulus (F. Muell.) Hughes nov. comb.; Panicum 
majusculum Muell. ex Benth. Fl. Austral. vii. 482 (1878). 
N. Terrtrory : Victoria River, Elsey!. 
