Polygonum POLYGONACE/K 111 



^ „ o -- ~-^ • (6-8) included; 



style 2-cleft. Nut iQjas-shaped, almost orbicular, cuspidate with the 

 persistent style-base, flattish, 3 mm. 1. (incl. style-base), black. - 



4. P. glabpum Willd. Sp. PI. ii. 447 (1799); glabrous; 

 stipules without cilia ; leaves lanceolate. — Meisn. Toe. cit. ; Hook. f. 

 Fl. Br. Ind. v. 34; Wight Ic. t. 1799; Griseb. loc. cit.; Urh. 

 loc. cit. , P. portoricense Bert. ms. ex Endl. Gen. Suppl. iv. pt. 2, 

 47 (1847); Small op. cit. 46, t. 10. Persicaria urens «kc. Sloane. 

 Cat. 47 & Hist. i. 140. 



In ponds and marshes ; Sloane Herb. ii. 104 ! Broughton I Distin 1 St. 

 Mary, McNab ! Constant Spring pond, 600 ft;, Campbell ! Banks of Ferry 

 Rivet, 100 ft., Harris I Banks of Rio Cobre, near Bog Walk, Harris d; 

 Britton 1 Fl. Jam. 6141, 9045, 10,530. — Tropics in America, Africa and Asia. 



Stem 2-4 ft. Stipules truncate. Leaves acuminate. Racemes slender, 

 panicled, continuous. Peduncles glandular or not. Bracts 2-6-flowered, 

 contiguous, shortly funnel-shaped, obliquely truncate, without cilia. 

 Perianth white or rosy, variable in size, 5-partite. Stamens 6-8, about as 

 long as calyx. Styles 2, about as long as perianth. Nut biconvex, black. 



[§ 2. Flowers capitate in corymbs. • 



P» ehinense L. Sp. PI. 363 (1753); Meisn. in DC. Prodr. 

 xiv. 130 ; Wight Ic. t. 1806; Hook. f. torn. cit. 44. 



Naturalised at Cinchona, 4500-5000 ft., Harris I Fl. Jam. 9107.— 

 E. Indies to Japan. 



Stem erect, trailing, branching. Leaves ovate-elliptical* oi? elliptical, 

 entire, base truncate-obtuse, decurrent forming more or less wings on 

 petiole ; petioles with decidvious rounded auricles at their base. Stipules 

 long, tubular, without cilia. Flowers capitate, capitula in a simple or 

 paniculate corymb, pedimcles of the capitula hispidulous. Bracts folia- 

 ceous, acute, cordate.] 



3._C0CC0L0BA L. 



Trees or shrubs. Leaves alternate, entire. Flowers her- 

 maphrodite, solitary or clustered within small ochreiform bracts, 

 clusters in spike-like racemes, racemes simple, solitary or rarely 

 two or three together, or paniculate, terminal and axillary. 

 Perianth 5-partite, at length more or less fleshy, and enveloping 

 and attached to the nut. Stamens 8 ; filaments connate at 

 base ; styles 3 ; stigmas more or less dilated. Nut crowned with 

 the limb of the perianth, but in C. venosa protruding above it. 

 Embryo enclosed in the ruminate endosperm, with foliaceous 

 cotyledons. 



Species about 140, in tropical and subtropical America, 

 including West Indies. 



