POLYGONUM. 
stain, f), styles eonnected half-way up “arveet.’’ E. B. S. 
— St. 1 — .'i feet high, often imieh hraneheil. Oehrea; all fringed. 
Spikes thiekening upwards. — Wet places. A. VIII. IX. E. 
8. P. Ilydropiper (h.) ; spikes drooping filiform interrupted, 
1. lanceolate wiut, ochre<e veiitricose glabrous inw^uX (jlandular , 
perianths ylandular, nut (large) compressed its faces ovate acute 
rugose-punctate ojiacpie conve.x, styles 2 nearly distinct. — E. B. 
989. — St. 1—3 feet high. Upper ochreac funnelshaped, scarcely 
fringed. Nut rounder than in P. mite. Spikes sometimes erect. 
—Wet places. A. VIII. IX. 
9. P. minus (Iluds.) ; spikes erect filiform slender lax, 1. linear- 
lanceolate jilane, ochrea: close pilose fringed without glands, peri- 
anths without glands, nut (small) compressed its faces ovate acute 
smooth shining convex, styles connected for at least ^ their 
length. — E. B. 1043. — St. procumhent, diffuse. Spikes ascend- 
ing. Much smaller than the preceding. Ochre® all fringed. 
FI. and fr. only half the size of those of P. Hydropiper. — j3. erec- 
tum (Bah.); st. erect, 1. narrower. — Wet gravelly places. A. IX. 
*** OchreeB2-lobed. Root fibrous. Cotyledons incumbent . Nut 
triquetrous. Stam. 8. Styles 3. FI. axillary. Avicularia. 
10. P. aviculare (L.) ; fi. 1 — 3 together axillary, 1. lanceolate 
or elliptical plane stalked, ochrece lanceolate acute with few di- 
stant simple nerves at length torn, nut triquetrous striated with 
raised points opaque about as long as the perianth. — E. B. 1252. 
— L. usually hlunt sometimes acute. The varieties are innumera- 
ble. FI. either very distant and scattered, or so much collected 
as almost to form a leafy spike. St. erect or procumbent. A 
form with very short internodes and leaves, small fl. and much 
branched stems occurs on the sandy coasts of the south of En- 
gland; another (P. littorale Link) with more numerous fl., fleshy 
elongated st. and 1. is found on the sea-shore. A corn-field plant 
with long slightly branched st. having very long internodes, scat- 
tered fl., long and much torn ochre®, and linear-lanceolate acute 
1. is possibly P. virgatum Loisel. — Waste places. A. V. — IX. 
Knot-grass. 
11. P. Rail (Bab.); fl. 1 — 3 together axillary, I. elliptic-lan- 
ceolate, ochrea lanceolate acute with few distant simqjle nerves at 
length torn, nut triquetrous smooth shining longer than the peri- 
anth. — E. B. S. 2805. P. Roberti Loisel. 1, Hook. P. dubium 
Deak. — St. long, straggling, prostrate. “ L. plane, benihng to- 
wards the stem.” Wats. Resembling P. aviculare in habit, but 
P. maritimum in fruit. Filaments broader at the base. A variety 
with smaller 1. and fl. ocem-s in the Channel Islands. P. Roberti 
