246 
BOTANY. 
erect-spreading, bracteate below, with deflcxed pedicels ; calyx-lobes ovate, 
shorter than the corolla ; nutlets compressed, with a single marginal row of 
barbed prickles, which are connate at base, the dorsal surflice granulate and 
shortly pilose. Var. floribundum. (E. foribundum, Lelim.) Usually taller 
(2-4° high) than the European and Siberian form, the leaves acute or obtuse, 
and the dorsal surface of the nutlets variable, either nearly smooth, especially 
in the younger fruit as figured in the Flora Bor.-Amer., or pilose, or coarsely 
granulate with the tubercles often pilose, and frequently with a few scattered 
imperfectly developed barbed prickles.— The central longitudinal ridge is 
more or less distinct and the marginal prickles vary in mimber and breadth. 
The flowers are either light blue or white, 2-7" in diameter. From New 
Mexico to the Saskatchewan and west to Northern Cahfornia and Washington 
Territory. Frequent in the mountains from the Havallah range to the Wah- 
satch; 5-8,000 feet altitude; May-August. (860.) 
EcHiNOSPEEMUM Redowskii, Lehm. DC. Prodr. 10. 137. Stem erect, 
pubescent, paniculately branched ; leaves linear or sublanceolate, hoary with 
spreading hairs ; calyx-lobes narrow-linear, equaling the corolla-tube ; nutlets 
compressed, surrounded hy a single row of barbed prickles, muriculate-rugosc 
upon the back and sides, shorter than the enlarged calyx. Var. occidentale. 
{E. Redowskii, Gray.) The tubercles, which are irregularly and thickly 
scattered over the faces of the nutlet, very sharply acute instead of rounded- 
obtuse as in Asiatic specimens.— Quite variable in its habit ; from 3-2° high, 
much l)ranchcd at l^ase and ascending, or with a single erect virgate stem j 
leaves and bracts usually linear-oblong, not unfrequently ovate-oblong or spat- 
ulate, always obtuse ; flowers small, but little exceeding the calyx, blue ; the 
prickly maririn more or less contracted over the back of the nutlet, and the 
prickles luoi-c or less confluent. E. patuhini, Lehm., of Western Asia, to 
which tills plant was at first referred, differs from E. Redowskii (as shown by 
specimens in Herb. Gray.) only in the tuberculations upon the fruit, which 
in the former species are few in number, arranged regularly in longitudinal 
rows upon the back and upon the outer edge of the sides, and arnied with 
eurv.Ml points. The differences are represented with tolerable accuracy in 
the plate. From Western Texas to Arizona and northward to the Saskat- 
chewan, Bear Lake and Fort Youkon. Frequent in the valleys and on the 
mountains from the Sierras to the Wahsatch ; 4-8,000 feet altitude • May- 
July. Plate XXIIL Figs. 9, 10. Achenium of Redoicskii, Var. Occident- 
