POLYGONACEOUS GENERA. 37 
A rank weedy species of low prairies in Indiana, Ilinois, 
Iowa and Missouri, probably also in Michigan, Wisconsin and 
Minnesota; notably leafy and small-flowered as compared with 
its eastern homologue, and by these notes, and especially by the 
very dissimilar pubescence of the veins beneath, easily distin- 
guished. 
P. SPECTABILIS. Size of the foregoing; leaves more elliptic- 
lanceolate, of--firmer texture, glabrous on both faces except the 
veins and veinlets, these both above and beneath beset with minute 
slender conic and appressed short hairs, the margins appressed 
ciliate with longer hairs: spikes usually two, large and showy, 
the terminal one 2 to 43 inches long, the other half as long ; 
short peduncles minutely glandular-hispid, but the whole stem 
quite glabrous; bracts merely hispidulous and sparsely so: 
achenes round-ovate, bluntly short-apiculate, dark-brown and 
shining. 
Handsome species, known to me only as in U. S. Herb., in 
Specimens by M. S. Bebb from Fountaindale, Ill., and from 
Riley County, Kansas, by G. L. Clothier. 
P. LONCHOPHYLLA. Leafy stem upright. or perhaps only 
assurgent from a decumbent or prostrate base rooting at the 
nodes: leaves narrowly lanceolate, 4 or 5 inches long, ascending 
on petioles of less than an inch, those from the lower nodes 
merely scabrous above, the upper and floral strigulose above, the 
surface beneath similarly pubescent, but the midvein more 
densely so, and with longer and more bristly but closely-ap- 
pressed hairs; spikes about 2 inches long, linear, their pedun- 
cles neither glandular nor scabrous, but clothed with a short 
soft appressed though not dense pubescence; bracts ovate, 
acute, strigose on the back with short hairs, and ciliate with 
longer and stouter ones. 
Near the southern shore of Lake Michigan, at Miller} Ind., 
? July, 1897, collected and distributed for P. Hartwrightit, by 
L. M. Umbach; but the plant bears no particularly close rela- 
tionship to that species. 
P. GRANDIFOLIA. ‘Terrestrial state 2 or 3 feet high, slender, 
very leafy to the summit, the nodes abruptly swollen, the inter- 
