POLYGONUM. 
331 
2. P. vivip'arum (L.) ; raceme slender lax btdbiferaus bearing 
fl. on its upper part, I. linear-lanceolate with revolute margins, 
lower I. elliptic with wingless footstalks, face of nut ovate-lan- 
ceolate smooth and shining. — E. B. 669. — Height 4 — 8 in. Fl. 
on the lower part of the raceme replaced by small red bulbs. 
_F1. white, sometimes very few in number. — /S. aljjinum (Wahl.) 
lower 1. oval, root much thicker. — Mountain pastures. /3. 
Shetland and O. Hebrides. P. VI. VII. E. S. I. 
** Ocrece truncate. Root fibrous. Nut com2n-essecl or subtri- 
quetrcnis. Stam. 4 — 8. Styles 2 — 3. Racemes spikelike. — 
Fl.pVA'ple or white. L. without or with a central dark spot. 
Persicaria. 
t Creeping. Perennial. Anthers protruded. 
.3. P. amphib'ium (L.) : raceme dense ovate-cylindrical, 1. 
stalked ovate-oblong (floating) or oblong-lanceolate or narrow- 
lanceolate rough at the margins, ocreas membranous close, nut 
compressed smooth shining, stam. 5. — E. B. 436. — St. long when 
floating. Racemes generally solitary and terminal. Fl. rose- 
I coloured. Stam. protruded or not. Very varia.ble in the form 
of its leaves according to its habitation. — Floating or growing 
Tipon mud or on boggy ground. P. VII. — IX. E. S. I. 
tt Root fibrous. Annual. Anthers included. 
4. P .lapathifolium (L. em., Pichb.) ; raceme oblong cylindrical 
dense, 1. oblong-lanceolate or ovate attenuate at both ends 
glandular beneath, ocrece close not fringed the upper one shortly 
fringed, peduncles and perianth rough with glands, nut com- 
/rressed its faces roundish acuminate concave smooth shining 
scarcely covered by the prominently veined perianth, styles 
distinct at length divergent and reflexed. — E. B. 1382. — Height 
1—2 feet. St. sometimes spotted, glandular or glabrous ; 
joinings more or less thickened. P»,acemes axillary or terminal, 
1 — 2 together. Fl. pale. Bracts auricled. — Waste and damp 
places. A. VII.— IX. . E. S. I. 
5. P. nodosum (Pers. sec. Rchb.) ; raceme long slender, 1. 
lanceolate much attenuateat both ends wavy glandular beneath, 
iicrece loose shortly fringed the floral ones horned, jsec/. and peri- 
anths rough ivith glands, nut compressed its faces roundish 
acuminate concave shining covered by the strongly veined 
perianth, styles connected belowat lengthdivergentand reflexed. 
^ —P. lariim E. B. S. 2822. P. maculdtum (Bab.) Pi. I. 496. 
