316 
BOTANY. 
shilling. Havallali and East Humboldt Mountains, Nevada ; 7,000 feet alti- 
tude. (1,060.) 
Var. LATiFOLiUM, Eng. Proc. Acad. Phil, March, 1863, p. lb. Low; 
leaves oblong ; spikes crowded, the upper bracts pointless. — A small state of 
thelast. Clover Mountains, Nevada; 9,000 feet altitude; September. (1,061.) 
Polygonum coaectatum, Dougl. DC. Frodr. 14. 101. Stem erect, 
6-12' high, dichotomous, terete, smooth ; branches filiform, erect ; sheaths 
semi-hyahne, 2-nerved, at length 2-parted and lacerate ; leaves lanceolate or 
linear, 1-U' long, acute, 1-nerved, veinless, revolute on the margin ; spikes 
filiform, 2-3' long, loose, interrupted at base, leafless above; bracts 1-2- 
flowered ; caljx open, at length closed, 2" long, lobes oblong, deflexed, obso- 
letely carinate-triangalar ; achenium inclosed, very smooth, shining, the fiice 
ovate-oblong.— Branchlets angled, very minutely scabrous-punctate ; bracts 
hyaline, exceeding the subsolitary pedicels, the lower terminating with a 
short subulate leaf, the upper leafless and pointless ; flowers becoming pendu- 
lous; achenium occasionally minutely roughened, as described by Hooker. 
Idaho and Washington Territory. Var. minus, Meisn. Low, ^-3' high, spar- 
ingly branched ; leaves narrow, (6-9" long r wide,) smooth ; spikes short, 
(i',) densely flowered ; calyx 1" long, with obovate lobes.— Achenium glab- 
rous or more or less tuberculate-striate, even upon the same plant ; leaves 
oflen more oblong, 2-3" long and nearly I" wide, imbricated. Arctic Amer- 
ica, (Franklin ;) Oregon, (Spalding.) It is P. confertifolium, Nutt, in Herb. 
Gray., with ''rugulose-striate" achenia, from the "Columbia Plains," and also 
his P. imhricatum, with glabrous achenia, from the Eocky Mountains ; also 
493 Hall & Harbour from Colorado and 125 Torrey from near Donner Lake, 
California. East Humboldt and Clover Mountains, Nevada, and in the Wah- 
satch; 6,500-9,500 feet altitude; June-September. (1,062.) A more 
slender form, with shorter and few-flowered spikes. Wahsatch Mountains • 
6-7,000 feet altitude. (1,063.) 
Polygonum amphibium, L. Northern States and Canada to the Great 
Slave Lake; from Washington Territory to Cahfornia, and in the mountains 
eastwanl, and in New I^lexico and Sonora. Valleys of Nevada, and Parley's 
Park in the Wahsatch; 4,500-6,000 feet altitude; June-September. ( I 064 ) 
Var. TERRESTEE, Willd. On stream-banks in the Wahsatch (l'o65 ) 
Polygonum Persicaeia, L. Malade Valley, at a sheep-ranch; intro- 
duced. (1,066.) 
