OCTANDRIA.— TRIGYNIA. 173 



12. P. orientate : flowers heptandrous, digynous, leaves 



ovate ; stem erect ; stipules hairy, hypocrateri- 

 form. 

 HAB. Road sides, &c. Aug.— Sept. 0. Stem 3— 

 5 ft. high, pubes. ; spik. subpend, rad. 



*** Flowers in paniculate spikes ; perianth 5-leaved. 



PoLYGONELLA. 



13. P. articulatum: flowers perfect, octandrous, trigy- 



nous, nodding ; spikes paniculate, filiform ; pedi- 

 cels solitary, articulate near the base ; bracts im- 

 bricate ; leaves linear ; nut triquetrous. 

 HAB. Barren sandy woods. Sept. ©. A foot 

 high, branched ; bracts trunc. ; fl. rose-col. 



*.#** Flowers in racemose panicles ; {leaves subcordate 

 or sagittate.) Fagofyrum. 



14. P. Convolvulus : flowers octandrous ; styles 3-cleft » 



leaves oblong, hastate-cordate ; stem climbing, 

 angular, somewhat scabrous ; segments of the pe- 

 rianth obtusely carinate. 

 HAB. Sandy fields, &c. July— Sept. ©. Leav. 

 pctiol. ; raceme interrupt. ; fl. reddish. 



15. P. cilinode : flowers octandrous ; styles 3-cleft ; 



leaves cordate ; stipules rather acute, ciliate at the 

 base ; stem angular, climbing or prostrate, pubes- 

 cent ; segments of the perianth obtusely carinate. 

 HAB. Hills. Aug. 0. Plant minutely pubes. : 

 leav. subhast. ; fl. pale rose-col. 



16. P. scandens: flowers octandrous, trigynous ; leaves 



broadly cordate ; stipules truncate, naked ; stem 

 climbing, smooth ; segments of the perianth 

 winged. 

 11 AB. Hedges, &c. Aug. ©. Stem 4 — 5 ang. : 

 pur p. ; fl. large, aggreg. wh. or rose-col. 

 k7. P. sagittalum: flowers octandrous, capitate ; style* 

 3-cleft ; leaves sagittate, stem retrorsely aculeate. 

 HAB. Wet thickets. July— Aug. 0. Stemslend.. 

 prost. ; fl. in sm. heads, white. 

 18. P. arifolium : flowers hexandrous, distinct ; styles 

 bifid ; spikes few-flowered, leaves hastate ; stem 

 retrorsely aculeate. 



P2 



