310 66. POLYGONACILE. 



smooth shining convex, styles connected for at least half their 

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

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

 half the size. — Wet gravelly places, rare. A. VIII. IX. E. S. I. 



*** Oo-ees 2-hbed. Rootjlbrous. Nut triquetrous. Stam. 8. 

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



10. P. aviculdre (L.) ; 1. lanceolate or elliptic stalked, ocrecs 

 lanceolate acute tcitJi few distant simple veins at length torn, 

 nut striate with raised points opaque about equaUiny the perianth. 

 —E. B. 1252. Sy. E. B. 1229— 1231.— L. usually blunt, some- 

 times acute, broad or narrow. Fl. either very distant and scat- 

 tered, or so much collected as almost to form a leafy spike. St. 

 erect or procumbent. Ocrese sometimes long and much torn. 

 Nut usually falling short of the perianth, but sometimes slightly 

 exceeding it. Very variable. Some botanists think that it 

 includes several species ; but I am quite unable to divide what 

 I have seen similarly. — /3. P. littorale (Link) ; st. long, diffuse, 

 prostrate, 1. thick broad, nut minutely punctured finely striate. 

 — Waste places. Sands by the sea. A. V. — IX. Knot-grass. 



E. S. I. 



11. P. Rdii (Bab.) ; I. elliptic-laiiceolate_/?aii, ocreee lanceolate 

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

 shining exceeding the perianth. — E. B. S. 2805. — St. long, strag- 

 ghng, prostrate. L. bending towards the stem. Filaments 

 broader at the base. Resembling P. aviculare in habit, but P. 

 maritimum in fruit. It varies with smaller 1. and fl. — Sandy 

 sea-shores. A. or P. VIII. IX. E. S. I. 



12. P. marit'imum (L.) ; I. elliptic-lanceolate coriaceous with 

 revolute edges, ocrem lanceolate with many branched veins at 

 length torn, nut smooth shining exceeding the perianth. — 

 E. B. S. 2804. — St. procumbent, quite woody below, often much* 

 buried. L. convex above, diverging from the stem. Filaments 

 broader at the base. — Sands of the so.uthern sea-shores. Christ- 

 chui'ch, Hants. Braunton Burrows, Dev. Falmouth. Channel 

 Islands. P. Vm.IX. £. 



*»*» OeretB semioylindrical. Moot fibrous. Nut triquetrous. 

 Stam. 8. Stoles 3. M. racemose. 



13. P. Convol'vulus (L.) ; st. twining angular, 1. cordate-sagit- 

 tate, segments of perianth bluntly keeled, nut opaque striate with 

 minute points. — E. B. 941. — St. climbimg or prostrate, much 

 shorter than in the next species. — ji. pseudo-dumetorum (Wats.) ; 

 perianth-segm. winged ; often taken for Sp. 14. — Cultivated 

 and wasteland. A. VII. — IX. Black Bindweed. E.S.I. 



