POLYGONUM. 283 



scarcely covered by the perianth, styles connected half-way up at 

 length patent. — E. B. 756. — St. 1 — 2 feet high. L. more or less 

 covered with hairs on both sides, sometimes woolly on the under 

 side, when it is f . incanum of authors. Fed. sometimes slightly 

 hairy, never glandular. — Waste and damp ground. A. VI. — X. 



7. P. mite (Schrank) ; spikes erect fihform inteiTupted, 1. lan- 

 ceolate slightly wavy, ochrece loose funnelshaped pilose strongly 

 fringed without glands, perianths without glands, nut (large) 

 compressed its faces roughish ovate acute rather shining convex, 

 stam. 5, styles connected half-way up " arrect." E. B. S. 2867. 

 — St. 1 — 3 feet high, often much branched. OchrecE all fringed. 

 Spikes thickening upwards. — Wet places. A. VIII. IX. E. 



8. P. Hydropiper (L.); spikes drooping filiform interrupted, 

 1. lanceolate wavy, ochrece ventricose glabrous fringed glandular, 

 perianths glandular, nut (large) compressed its faces ovate acute 

 rugose-punctate opaque convex, styles 2 nearly distinct. — E. B. 

 989. — St. 1^ — 3 feet high. Upper ochrese funnelshaped, scarcely 

 fringed. Nut rounder than in P. mite. Spikes sometimes erect. 

 — Wet places. A. VIII. IX. Water Pepper. 



9. P. minus (Huds.) ; spikes erect filiform slender lax, 1. linear- 

 lanceolate plane, ochreas close pilose all fringed without glands, 

 perianths without glands, nut (Ismail) compressed its faces ovate 

 acute smooth shining convex, styles connected for at least half 

 their length. — E. B. 1043. — St. usually procumbent, diffuse. 

 Spikes ascending. Much smaller than P. Hydropiper, fl. and fr. 

 only half the size. — Wet gravelly places. A. VIII. IX. 



Stam. 8. 



*** Ochre<B2-lobed. Root fibrous. JNut triquetrous. 

 Styles 3. Fl. axillary, 1 — 3 together. Avicularia. 



10. P. aviculare (L.) ; 1. lanceolate or elliptical stalked, ochrem 

 lanceolate acute with few distant simple veins at length torn, 

 nut striated with raised points opaque about equalling the pe- 

 rianth. — E. B, 1252. — L. usually blunt, sometimes acute. Fl. 

 either very distant and scattered, or so much collected as almost 

 to form a leafy spike. St. erect or procumbent. Ochrese some- 

 times long and much torn. Extremely variable. A form with 

 a long St. and fleshy broad 1. is sometimes found on the sea- 

 shore, which Reichenb. and Koch call P. littorale (Lmk). — 

 Waste places. A. V.— IX. Knot-grass. 



11. P. Raii (Bab.) ; I. elliptic-lanceolate ^a*, ochrece lanceo- 

 late acute with few distant simple veins at length torn, nut 

 smooth shining exceeding the perianth. — E. B. S. 2805. F. Ro- 

 berti Hook., not Loisel. P. littorale Link ?, Gren. F. dubium 

 Deak. — St. long, straggling, prostrate. L. bending towards the 

 stem. Resembling P. aviculare in habit, but P. maritimum in 



