1917] Blake, — Two new Polygonums from New England 233 
4-9 mm. longae, basi brunneae tenuissime ca. 6—8-nerviae. Flores 
1-3 in axillis fere omnibus ramealibus, pedicellis in ocreis inclusis. 
Calyx frugifer 3.4-4 mm. longus 2-2.5 mm. latus ovoideo-sub- 
fusiformis saepissime apice contracto subrostratus subcoeruleo-viridis 
membranaceo-coriaceus ad medium 5-lobatus; sepala 5 oblonga con- 
ferta achenium saepissime omnino occultans, tria exteriora anguste 
vel omnino non pallido-marginata dorso valde carinata non venosa 
apice valde cucullata, duo interiora multo breviora sublate albo- 
marginata evenia a sepalis exterioribus saepissime omnino occultata. 
Achenia inclusa rarissime paullo exserta olivacea obscure puncticulosa 
omnino non nitentia valde inaequaliter trigona 2.6 mm. longa 1.8 mm. 
lata. Stamina 3-5. Stylus brevis ad medium divisus. 
Branched ascending annual, bluish-green, the stems (1) 1.5-3.5 dm. 
long. Stem stout, striate, compressed-angled above, whitish-green, 
glabrous; stem-internodes 1-1.5 (rarely 2) cm. long, the rameal 
4-8 mm. long. Leaves very crowded, elliptic, broadly rounded at 
apex, cuneately narrowed into the very short (0.6-1.5 mm. long) 
petiole, firm, bluish-green, inconspicuously veined (veins about 5 
pairs), surpassing the internodes, 7.5-22.5 mm. long, 4-10 mm. wide, 
those of the branches similar to the stem leaves but smaller, densely 
crowded. Ocreae lucid-scarious, whitish, weakly ca. 6—8-nerved at 
the brownish base, soon lacerate (lacineae ca. 6-8), scarious-persistent, 
scarcely at all fibrillose, conspicuous, 4-9 mm. long. Flowers 1-3 in 
nearly all the branch axils, on included pedicels. Fruiting calyx 3.4-4 
mm. long, 2-2.5 mm. wide, ovoid-subfusiform, usually subrostrate by | 
the contracted apex, somewhat bluish-green, membranaceous-coria- 
ceous, divided merely to the middle; sepals 5, narrowly oblong, 
crowded, usually completely hiding the achene, the three outer with 
narrow pale margin or none, strongly carinate but not venose on the 
back, strongly cucullate at apex, the two inner much shorter, rather 
broadly whitish-margined, but this normally quite hidden by the 
outer sepals, veinless. Achenes included or very rarely slightly 
exserted, olivaceous, obscurely puncticulose, not at all shining, very | 
unequally trigonous, 2.6 mm. long, 1.8 mm. wide. Stamens 3-5. 
Style short, divided to the middle.— P. erectum Blake! RHODORA, 
xv. 164 (1913), not L.— Gaspé County, Quebec, to Minnesota, 
Missouri, Montana and Saskatchewan, not obviously native any- 
where.— QUEBEC: salt marsh, York, Gaspé Co., 25 Aug. 1904, 
Collins, Fernald, and Pease, (Pease 5604 in part); vicinity of Longueuil, 
Sept. 1917, Bro. Marie-Victorin 4262. VERMONT: in paths, Queen 
City Park, South Burlington, 13 Aug. 1911, Blake 2766 (TYPE COLL.; 
Gray Herb. hb. N. E. Bot. Club, hb. Blake). Mznnesora: St. 
Anthony Park, Minneapolis, 20 July 1888, J. H. Schuette; along 
path, Bald Eagle, Ramsey Co., 6 July 1910, Blake 210 (hb. Blake). 
Missour!: introduced, Sheffield, 19 July 1906, Bush 4060 (distr. as 
P. littorale). Norra DAKOTA: streets, Leeds, 26 July 1900, Lunell 
(distr. as P. erectum). MONTANA: roadside weed, common, Great 
