294 66. POLTaoNACB-a;. 



foot high. Rhizome large. H. flesh-ooloured. — Moist meadows. 

 P. VI. and X. Snakeweed.- , E. S; I. 



2. P. vmp'arimi ,(L.) ; spike lax hulbiferous, "bearing fl. on itg 

 upper part I, linear-lanemlate with reyolute margins, hwer I. 

 eUipMc with wingless footstalks, filces of nut ovate-lanceolate 

 sniboth and shining. — ^Height 4—8 in. Fl. on the lower part 

 of the slender spike replaced by small red hulbs.' Fl. white, 

 sometimes Tery few in number. — ^Mountain pastures. P. VI. 

 VII. E.S,I. 



** Ocreai truncate. Moot Jihrous. Nut compressed or suhtri- 

 qi/etrous. Stain. 4 — 8. Styles 2 — 3. Fl. spiked, rarely 

 capitate. — Fl. purple or white. L. without or with a central 

 dark spot., Persicaria. - . - , 



■t Creeping. Perennial. Anthers protruded. 



•3. P. amphib'imn (L.) ; spike dense ovate-cylindrical, 1. stalked 

 ovate-oblong (floating) or oblong-lanceolate or narrow-lanceplate 

 rough at the margins, pcrese membranous close, nut compressed 

 smooth shining-, stam. 5. — ^St. long when floating. Spikes gene- 

 rally solitary and terminal. Fl. rose-coloured. Very variable 

 in the forni of its leaves according to its habitation. — ^Floating 

 or growing upon mud or on boggy ground. P. VII. — IX. 



E. S. I. 



tt Root fibrous. Annual. Anthers included. 



4. P. lapathifdlium (L.) ; spikes oblong cylindrical dense, 1. 

 oblong-lanceolate or ovate attenuate at both ends glandular 

 beneath, o'crem close riot fringed the ii/pper ones shortly fringed, 

 peduncles and perianth rough with glands, imt compressed its faces 

 roundish acuminate concave smooth shining scarcely covered 

 by the perianth, styles distinct at length divergent and reflexed. 

 — Height 1 — 2 ft. St. sometimes spotted, glandular or .gla- 

 brous ; joinings more or less thickened. Spikes axillary or ter- 

 minal, It— 2 together. Fl. pale. Bracts auricled. — Waste and 

 damp places. A. VII.— IX. E. S. I. 



5. P. noddsum (Pers.) ; spikes long slender, 1. lanceolate much 

 attenuate at both iCiids wavy glandular beneath, ocrea loose 

 .fhortlg fringed the 'S.OTsU ones hovnei, jjed. and perianths rmtgh 

 icith glands, nut compressed its faces roundish acuminate con- 

 cave shining covered by the perianth, st3'les connected below at 

 length divergent and reflexed. — P. laxmn E. JB. S. 2822. R. I. 

 f 685. — Smaller than'the preceding. St. often prOstrlate; joinings 

 very thick. Spikes slender and interrupted *(the typical form) ; 

 or thicker and continuous (as in E. B. S.), and 1. Avhite and 

 woolly beneath. — Damp gTavelly places. A. XTI. — IX. E. I. 



