286 67. EL^AGNACE^. 



fruit. Filaments broader at the base. It varies with smaller 1. 

 and fl. — Gren. says that the P. Roberti (Lois.) has the small fr. 

 and almost the 1. and st. of P. aviculare, with the ochreae and 

 smooth polished fr. of P. maritimum. — Sandy sea-shores. A. 

 VIII. IX. 



12. P. maritimum (I,.); Z. elliptical-lanceolate coriaceous miA 

 revolute edges, ochrem lanceolate with many branched veins 

 at length torn, nut smooth shining exceeding the perianth. — 

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

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

 broader at the base. — Sands of the sea-shore. Christchurch 

 Head, Hants. Channel Islands. P. VIII. IX. E. 



**** Ochrea semicylindrical. Root fibrous. Nut triquetrous. 

 Stam. 8. Styles 3. Fl. racemose. Tinaria. 



13. P. Convolvulus (L.) ; st. twining angular, 1. cordate-sagit- 

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

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

 shorter than in the next species. The perianth is sometimes 

 winged, when the plant is often taken for P. dameiorMm.— Cul- 

 tivated and waste land. A. VII. — IX. 



14. P. dumetorum (L.) ; st. twining striated, 1. cordate-sagit- 

 tate, segments of perianth winged, nut very smooth and shining. 

 ' — E. B. S. 2811. — St. wiry, climbing to the height of 4 or 5 

 feet.— Thickets in the south. A. VII.— IX. E. 



4. Fagopyrum Gaert. Buck-wheat. 



*1. F. esculentum (Moench) ; st. erect without prickles, fl. in 

 cymose panicles, stam. 8, 1. cordate-sagittate acute, nut trique- 

 trous acute with entire angles. — E. B. 1044. Polygonum Fago- 

 pyrum Sm. — Naturalized. Sown as food for game. A. VII. 

 VIII. E. S. 



Order LXVII. EL^AGNACE^E. 



Mostly dioecious. Perianth tubular ; limb 2 — 4-toothed, in 

 male fl. 4-parted. Stam. 3 or more, inserted in the throat. 

 Anth. 2.cellcd, nearly sessile, bursting on the inner side longi- 

 tudinally. Ovary free, 1-celled, with I erect ovule. Fr. crus- 

 taceous, inclosed within the fleshy persistent perigone. Albumen 

 thin and fleshy. Radicle inferior. — See G. F. G. Monochl. 44. 



1. HiPPOPHAE. Dioecious. Male fl. in a sort of catkin; 

 scales ovate, I -flowered. Perianth of 2 leaves adhering by 

 their points. Stam. 4 with very short filaments. Female 



