1. Polygonum.] 111. POLYGONACEM. 



Alon^ river-banks, pats of Chota Naorpur; Neterhat 3000 ft. ! Fl., Fr. Sept- 

 Nov. 



As many as six varieties are described in the F.B.I. I have only described the 

 form (var. anqustigsima) occurring in our area. The densely and many-fld. heads 

 easily disting-uish it from P. jirrvtermissitm. 



15. P. strigosum, Br. 



Widely creeping (suberect, F.B.I.) with angular stems, the angle» 

 beset with small reflexed or recurved barbs. Leaves linear -oblong 

 2-4" acuminate with rounded or subcordate base, midrib and margins 

 with reflexed small barbs or hispid and upper surface scabrid-hairy. 

 Flowers pink in very short oblong or subglobose heads or racemes 

 •25--5" long, with aculeate or glandular-hispid slender peduncles. 

 Bracts ovate or oblong, ciliate and strigose. Nut globosely 3-gonous. 



Creeping over rocks. Neterhat, 3000 ft. ! Fl. July-Nov. My specimens not in 

 flower. 



Nodes (base of stipules) with a ring of reflexed seta? •l-*2" long. Petioles -E-'S" 

 long, closelj' aculeate. Stipules long tubulnr truncate •8-1", with many excurrent 

 nerves terminating in ei-ect seta?. Racemes in 2-chotomous panicles. Tepals 

 obtuse. Stamens 6-8. 



Hooker states that all the north Indian specimens are 3-gynous, all the Peninsular 

 digynous; the absence of flowers in our specimens unfortunately precludes our 

 determining to which group they belong. 



An allied plant of this group, P. perfoliatum, L., found from Knmaon to 

 Central Bengal, but chiefly along the base of the Himalayas, may possibly occur 

 in our area. It is very easily recognised by the long-petioled broadly ovate- 

 .sagittate leaves with the petioles and angles of the stem with recurved prickles. 



16. P. alatum. Ham. 



A much branched weak rambling herb with slender branches 

 glabrous or sparsely hairy, sometimes glandular-hairy upwards. Leaves 

 •5-2" (including the so-called winged petiole, here described as part 

 of the leaf), sessile, elliptic or spathulate-obovate and auricled at the 

 base, membranous, obtuse, sparsely shortly hairy above. Stipules 

 very short obliquely truncate. Flowers -09" long in small bracteate 

 heads of which the lower bracts far exceed the flowers, on slender 

 glandular- hairy peduncles. Bracts not tubular, ovate to ovate- 

 lanceolate, glabrous, not ciliate. Nut trigonous or biconvex. 

 Only recorded from Parasnath, T. Thomson, Kurz, etc. ! Fl. r.s.-Nov. 



17. P. capitatum. Ham. 



Perennial, with manj' 6-8" long stems from a short rootstock, ovate or Ijroadly 

 elliptic acute or obtuse leaves "Z-l'S" long, with the base suddenly contracted to a 

 very short petiole with 2 auricles at its base, margins of leaves and auricles closely 

 ciliate. Stipules •2--3". Heads globose, pink, 1-3 terminal, •15--2" diam. or some- 

 times ovoid and "S" long. 



Manbhum, Campbell (fe^fe Gage). It is a hill plant found on rocks and walls, 

 and must have been collected on Parasnath. Fl. May-Aug. 



18. P. chinense, L. 



A diffuse herb scrambling among bushes to a height of 5 ft. or 

 () ft. with broad ovate to deltoid or oblong leaves, usually suddenly 

 cuneate on a slender petiole the base of which is more or less expanded, 

 or with a large auricle. Stipules very membranous. Flowers white 

 or pink capitate ; heads •2--3" diam. in axillary and terminal divari- 



780 



