POLYGON ACE^. 13 



obovate, obtuse, brown without, yellow within, the keel 

 nearly twice the width of the others: small apetalous 

 flowers many along the at length well developed stem, the 

 capsules succeeding these large, round-obovid, on deflexed 

 pedicels 1 or 2 inches long. 



Related to V. Sheltonii of the far Northwest, but very dif- 

 ferent. The specimens, from two localities, collected in 

 June, 1901, are numbered 42 and 233. 



POLYGONACE.E. 



POLYGONUM MONTANUM. P. Douglasii, var. latifolium, 

 Greene, Bull. Calif. Acad. i. 125. P. Douglasii, var. mon- 

 tanum, Small, Polyg. 118. Low, fastigiately branched from 

 the base, 3 to 6 inches high, the banches floriferous from 

 the base, but the flowers few among the proper leaves, most 

 of them forming a mere bracted spike beyond the foliage, 

 all the angles of stem and branches denticulate-scaberulous, 

 and other parts also more or less.scabro-puberulent: leaves 

 oblong-lanceolate, very acute, often an inch long, 1-nerved, the 

 nerve sharply carinate beneath the leaf: fruiting perianth 

 subsessile but nodding, its segments dark green or purplish 

 except marginally and completely enclosing the achene, this 

 black, smooth and shining, the faces obtusely rhomboidal, 

 the cross-section 3-lobed rather than triangular. 



The above description is drawn from a series of specimens 

 collected by Mr. Baker this year at Marshall Pass, 20 Aug., 

 and to be distributed under n. 893. These specimens 

 represent perfectly what I had in mind when naming P. 

 Douglasii, var. latifolium. But in the lapse of sixteen years, 

 other things have become confused with this in my own and 

 other herbaria, some of which are now to be segregated. 

 Habitally, as well as in its general dimensions, P. montanum 

 much more nearly approaches P. Austinse than P. Douglasii ; 



