PL ex. mon, 15. POLYGONE.ZE. 31. Persicaria. 271 
Persicaria maculosa procumbens foliis subtus incanis, Dillen in Raii 
Syn. 146, 10. 
Polygonum pallidum var. With. Bot. Arr. 473. 
Polygonum Pennsylvanicum, var. Curtis FI. Land. 
Polygonum lapathifolium 8, Smith FI. Brit. 425. 
Ditches and watery places ; annual ; September. 
III. 35. POLYGONUM. Dioscorides. Knotgrass . 
Perigonium 5-parted, persisting ; stamens 8 ; 5 opposite, 
3 interposed, connected by a gland ; styles and stigmata 3, 
very short ; thecidium rounded ; corculum lateral ; cotyledons 
incumbent.— -Root fibrous, slightly woody ; stem procum- 
bent, branchy; leaves alternate; flowers axillary; ocreaa 
cylindrical, 3 or 4-flowered. 
Polygonum aviculare . Bird knotgrass . 
Leaves elliptical, lanceolate, edge rough ; stem procum- 
bent, herbaceous ; ocrece acute, few-ribbed. 
Polygonum mas vulgare, Raii Syn. 146, 1 ; Ger. em.565. 
Polygonum mas vulgare majus, Park. 443, 1. 
Polygonum aviculare, Lin. S. P. 519. 
Polygonum latifolia, Retz Obseirv. 
Sieine’s grass. Bird’s tongue , North. 
Roadsides and paths in gravelly soils ; annual or biennial ; 
April to October. 
Stem divaricated, knotted at every joint ; leaves ovate or 
lanceolate ; flowers pink. — Herb given to sick swine that 
refuse their meat ; seeds may be ground into a good flour 
for cakes, and are the principal food of small birds when 
wild. 
jS. Irevifolium . Leaves oblong, a quarter of an inch long. 
Polygonum brevi angustoque folio, Raii Syn. 146, 2. 
y. angustifolium. Leaves strapshape. 
Polygonum oblongo angustoque folio, Raii Syn. 146,3. 
rotundifoliim. Leaves roundish, crowded. 
Polygonum folio rotundo, Dillen in Raii Syn. 147,4. 
s. marinum . Stem rather woody. 
Polygonum marinum, Raii Syn. 147,5. excluding his synonyms, which 
belong to Polygonum maritimum, Linn, a very different plant. 
IV. 36. FAGOPYRUM. Theophrastus. Buckwheat . 
Perigonium 5-parted, unequal, 2 inner small, 3 outer 
keeled, persisting; stamens 5 interposed and 3 opposite, 
with 5 nectariferous glands ; styles 3 ; stigmata 3 ; thecidium 
