210 DR. K. DOMIN ON THE 
Varietas hee characteribus datis conspicua et a typo valde divergens in 
duabus reperitur formis, i. e. f. levifolia (foliis una eum vaginis perfecte 
glabris leevibusque) et f. scaberula (foliis presertim in pagina superiore 
scabris), quæ rarius occurrit. 
(a) N.W. Australia: inter fl. Ashburton et De Gray, coll. Dr. E. Clement. 
(^) Elder Exploring Expedition, Camp 15, collegit R. Helms, 6 Augusto, 
1891. 
(c) Mt. Lyndhurst, collegit Max Koch, m. Martio 1899 (M. Koch, South 
Austral. Plants, No. 448, Panicum decompositum, “ Umbrella-grass 7). 
Cl. Koch in schedis annotat: * Good fodder, growing in moist 
situations.—Aboriginal names: Talghee, Allee, Koothoo, Caltharathie ; 
seed =powa rhandra, which the Blacks eat.” 
(d) Macquaries and Castlereags Rivers, coll. Wools. 
Panicum levinode, Lindl. in Mitchell, Three Exped. into the Interior of 
Eastern Australia, vol. i. (1839) p. 238 (adnot.), quod cl. Bentham pro 
synonymo P. decompositi declarat, est verosimiliter cum varietate nostra 
identicum, sed, cum descriptio Lindleyana authentica valde manca sit 
(“ panicula composita contracta capillari, ramis pedicellisque flexuosis, 
spiculis acutis glabris, gluma exteriore rotundata laxa, interiore 5-nervi, 
foliis vaginis geniculisque glabris levibus "), speciem hane varietati nostræ 
omnino adæquare pro certo affirmare non audeo. 
PANICUM DECOMPOSITUM, R. Br., var. SCABERRIMUM, Domin, var. n. 
Varietati præcedenti affine, foliis elongatis acuminatissimis sed ad laminæ 
basin latioribus (usque 1 em. vel paulo plus latis) in pagina superiore et 
marginibus scaberrimis subtus perfecte lævibus, vaginis setis brevibus 
suberectis valde hispidis, ligulis parte basali integris, paniculæ rhachi valde 
scabra, spiculis majusculis, gluma prima obtusa vel sepius subacuta. 
N.W. Australia: inter fl. Ashburton et De Gray, collegit Dr. E. Clement : 
promiseue cum varietate precedente, sed rarissime. 
Varietas indumento et asperitate memorabilis ! 
P. pecompostrum, R. Br., var. urine, Domin, var. n. (an species 
propria ?). 
Differt a typo præcipue gluma quarta intense nitente luride olivaceo- 
viridi nervis 5 usque 7 manifeste striata ; cæterum habet folia fere lævia. 
rhachin seabram, paniculam valde decompositam demum  divaricatam, 
glumam primam trancatam obtusam vel obscure dentatam brevem, glumam 
secundam et tertiam 7-nervem. 
N.W. Australia : inter fl. Ashburton et Yule, collegit Dr. E. Clement. 
Speeimina numerosa sed parte inferiore destituta, quam ob causam 
diiudieare nequeo, utrum planta perennis an annua sit. Forsan species 
