Polygonum. | XCIX. POLYGONACER, 269 
5. P. hydropiper, Linn. ; Meissn. in DC. Prod. xiv. 109. A slender 
erect or decumbent glabrous annual, 1 to 2 ft. high. Leaves lanceo- 
late, acuminate. Stipules she eathing, rather short, ciliate at the o 
fte di 
and often the braets also dotted with prominent — Style- trs 
wully2. Nuts fat.—P. gracile, R. Br. Prod. 419; Meissn. in DC. 
Prod. xiv. 109. 
N.S. Wales. Port Jackson, R. Brown, Woolls; Hunter’s river, Leichhardt ; 
Carenoe river, ine 
Victoria. Yarra-Yarra, Robertson, F. Mueller; Goulburn river, F. Mueller. 
The mele] is s widely diffused over oe Hoopa temperate and subtropical Asia and North 
Ameri re between the Australian and many of the northern 
pectin, 
minus, Huds. ; Meissn. in DC. Prod. xiv. 111. Rather slender, 
rarely exceeding 2 ft., quite glabrous in the typical form. Leaves shortly 
Petiolate, lanceolate, acuminate. Stipules closely sheathing, the margins 
ciliate. Spikes 1 to 14 in. long, few in a eeu | gers more 
slender than in P. lapathifolium, much les than i 
: Bracts small, naked or shortly ciliate. Porianth small, Bi geb A 
." Stamens 5 or 6. Style-branches 2 or 3, varying often in the same 
Pus more frequently 3 than 2 in the Australian specimens. .—Hook. 
£ Fl. Tasm. i. 306; p. decipiens, R. Br. Prod. 420; Meissn. in DC. 
Prod. xiv. 104. 
Brisbane, Burnett, and Burdekin rivers, F. Mueller ; Moreton me 
Vois Rockhampton, O Shanes 8y ; Rockinghais Bay, Dallachy ; in the 
i ne "s sek Jackson, R. Brown, Woolls; Argyle county, Backhouse ; 
an tua 
Victoria. Miray and Yarra rivers, F. Mueller, Robertson; Portland, Allitt ; 
Ema Creek, Whan 
mia, Dni in the northern parts of the island, J. D. Hooker. 
wAnstralia. Murray and Torrens dum and Holdfast Bay, £ Mueller. 
c» Australia, Dr ummond, n. 20; Moore river, Oldfield. ; 
tropical regions 
of the Y rad " gu common in the temperate, exse ee qs -— —À 
jl a few small strigose hairs on the under side of the I agen 
cH 1s almost iun rise These constitute probably e wore 
gen “sit fle “eb emg Lag. cited from Australia and New Z 
7. P. niei with an almost 
wai —— Pr ped aae 2 or 3 ft., 
yr 
Upper nae. wy iio leaves, Wie a . Leaves — 
pikos " er slender, 1 to 2 in. long, 
es in a loose terminal panicle. e segments petal-like, 
