POLYGONACEOUS GENERA. 35 



P. LADRiNA. Of the size and the slender decumbent habit 

 of P. remota, but leaves elliptic-lanceolate and about 7 

 inches long including the J inch petiole, thin, sparsely and 

 minutely strigose on both faces, more pronouncedly and densely 

 so on the midvein, especially beneath ; ocrese, as also the lower 

 internodes of the stem, sparsely appressed-hairy ; spikes very 

 slender, 1 to 3 inches long, on slender glandular-hirtellous pe- 

 duncles; bracts rhombic -ovate, hairy, not ciliate. 



Catawba Island, in Lake Brie, northern Ohio, 5 Sept., 1897, 

 E. L. Mosely ; the type specimens in U. S. Herb. Leaves with 

 the outline and venation of those of Laurus nobilis. 



P. PORTEKi. Decumbent, or the basal part prostrate, the 

 stem 3 feet long, very densely leafy with an elongated and 

 spreading foliage ; lower internodes 2, upper 1 inch long, all 

 striate-angled and more or less appressed-hairy; subsessile leaves 

 5 to 7 inches long, lanceolate, acute, sparsely scabrous above 

 both on the veins and elsewhere, especially toward the margin, 

 this beset with long stout but appressed cilii, beneath sparsely 

 hairy, but the hairs of the midvein much longer, setiform, ap- 

 pressed ; ocreee somewhat villous-hirsute ; spikes linear, 1 to 2 

 inches long, their peduncles glandular-hispid; bracts ovate, 

 acute, sparsely strigose on the back and bordered with long 

 bristly cilii. 



Shores of the Delaware Eiver at Baston, Penn., 30 Aug., 1895. 

 T. C. Porter, type in U. S. Herb. Evidently riparian, but 

 surely no mere phase of the next, from which the long narrow 

 subsessile spreading foliage must widely separate it. 



P. cocciNEA (Muhl.), Greene, Leafl. i. 24. Commonly upright, 

 about 3 feet high, copiously leafy with petiolate and ascending 

 foliage ; blades ovate-elliptic or elliptic-lanceolate, 5 to 8 inches 

 long, abruptly acuminate, the upper face muriculate-scabrous 

 on midvein and all veinlets, the lower more emphatically so, 

 the margin minutely serrulate-scabrous, the general surface 

 nearly or quite glabrous ; ocrese very thin, sparingly strigulose- 

 roughened with short sharp hairs : spikes 1 J to 3 inches long on 

 short glandular-hispidulous peduncles ; bracts with scattered 

 short spinulose hairs on the back and along the margin. 



