POLYGONEJ;. 



319 



cordate, one or all beaded, 

 or lanceolate, undulate, p. 

 aiid uncult. 



L. oblong, acute, 



7, 8. Meadows 



14. aquaticus. Sep. broadly cordate, witb- 

 out a bead. Lower L. cordato-obloug, acute, 

 somewhat wavy ; upper lanceolate. (Stalk witb 

 a narrow channel, Kocfi.) Whorls crowded, 

 leafless, p. 7, 8. Moist banlcs. Yorkshire. 

 Air. G. occ. Koch says, " extra aquam nuu- 

 quam crescit." The British plant is, I be- 

 lieve, never found in the water. 



15. domesticus. " Sep. subi'otundo-cor- 

 date, without a bead. Root and lower L. 

 curled, oblong or broadly lanceolate, on an 

 ovate or cordate base. Stalks flat above, with 

 a slender marginal line. p. 7, 8. Banks of 

 Elbe uear Hamburg." — Koch. 



16. alpinus. Sep. triangulari-cordate, 

 membranous, nearly without bead. Root-L. 

 subrotuudo-cordate. Stalks channeled. Whorls 

 crowded, generally leafless, pedicels long. (Fl. 

 polygamous, monoecious, Bert.) p. 7, 8. 

 Mountains, chiefly by stations for the cattle. 

 Scotl. Alps. Pyr. Aust. Apenn. 



B. Flowers complete. Sepals reflex ed. 



17. tingitamws. Sep. broadly cordate, 

 quite entire. L. hastate, ovate, acute, stalked. 

 Whorls distant, few-flowered, p. 6. Sea- 

 shore. i\jle3 to Narbonne. 



18. bucephalophorus. Sep. triangulari- 

 oblong, with setaceous teeth ; all beaded. L. 

 ovate, quite entire. Whorls about 3-flowered. 

 Stallis dilated above the joining, a. 3, 4. 

 Barren, mdt. Fi'. w. It. 



C. Mowers separate, moncecious. Sepals 

 united. 



19. spinosus. Somewhat dichotomous. 

 Div. of Cal. tipped with a recurved spine. 

 Barren Fl. unarmed, in upper part of same 

 cluster. L. somewhat cordate, a. 1-4. Salt 

 marshes. Barletta. Reggio. Sic. Sard. 



D. Flowers separate. Sepals free, reflexed 

 in fruit. 



i. Flowers polygamous, monoecious. 



20. scutatus. Sep. broadly cordate, mem- 

 branous, quite entire. No Bead. L. hastate, 

 ovate, or somewhat fiddle-shaped, p. 5-7. 

 Stony hills, m. and s. Em-. 



/3. cetnensis. Fl. complete, rough with 

 hairs, ^tna. 



ii. Flowers dioecious ; no complete flowers. 

 a. Joinings distant from Calyx. 



21. amplexicaulis. Sep. broadly cordate, 

 somewhat beaded. Lower L. cordate, stalked, 

 with obtuse ears parallel to midrib ; upper 

 somewhat acute, amplexicaul. Whorls crowded, 

 few-flowered, leafless, p. High. Pyr. Cantal. 



22. nivalis. Sep. of Fr. subrotundo-cor- 

 date, quite entire, with a deflexed callus at the 

 base. Outer L. subrotuudo-cordate; inner 

 ovate, oblong, or hastate. Stem nearly simple, 

 leafless or with 1 or 2 L. p. 7, 8. Very high 

 gravel. Alps of Sw. Bav. Cam. — Koch. 



23. Acetosa. Sep. broadly cordate. Beads 

 small or wanting. L. sagittate or hastate. 

 Ears acute. Upper L. oblong, p. Meadows 

 and pastures. R. Acetosa of Bert. R. his- 

 panicus of Koch is a garden plant. 



24. montanus. Sep. broadly cordate, 

 quite entire, with a small round bead. L. has- 

 tate : lower ovate, obtuse ; upper triangular, 

 acuminate. Ears acute, p. 7, 8. Mountain 

 meadows. Pyr. Auv. Alps. G. Apenn. 



25. interinedius. Sepals subreniform, 

 beaded. L. oblong or linear : lower sagittate ; 

 upper hastate. Rac. compact, p. 4, 5. Clayey 

 hills. Palermo. Cors. s. Fr. 



26. tuberosus. Small, ovate tubers on 

 the fibres of Root. Sep. cordate -orbicular, with 

 small, oblong beads. L. hastate, lanceolate. 

 p. 5. Meadows. Nice. Verona. 



b. Joinings close to calyx. 



27. Acetosella. Sep. subrotuudo-cordate, 

 membranous, quite entire, without bead or 

 scale. L. hastate, lanceolate or linear. Ears 

 entire, p. 6, 7. Sand or gravel. 



28. m'ultifidus. Sep. very thin, papillose. 

 L. hastato-lanceolate, 1-nerved. Ears palmate. 

 a. b. 5, 6. VaUombrosa. Vesuvius. Messina. 

 J3tna. 



699. OXYRIA. 



1. reniforxnis. L. reniform. Sepals 4. 

 p. 7, 8. High mountains. 



700. POLYGONTBI. 



A. Root fleshy. Stem simple, with a single, 

 spike-Hke, terminal raceme. Sp. 1, 2. 



B. Root fibrous. Stem branched. Stipules 

 cylindrical, undivided. Flowers ia spike- 

 like racemes. 



