36 POLYGONACEZ. [ Potyconum 
An erect branching usually pale-green annual. Stems often tinged with 
red. Leaves subsessile, elliptic-ovate or lanceolate, glandular beneath ; 
stipules usually shortly ciliate. Racemes erect or nodding, dense or 
(in Indian specimens) rather lax ; bracts eciliate, peduncles and pedi- 
cels glandular. Perianth greenish, glandular, nerves strong. Stamens: 
usually 6. Nutlets orbicular, biconvex. 
Collected by Dr. T. Thomson in the Moradabad District. This is the 
only authentic record I have seen of its occurrence within the area of 
this flora, though doubtless existing in other localities. DISTRIB. > 
From Bengal to the N. W. Frontier, ascending to 5,000 ft. on the 
Himalaya ; also in Assam and Burma. This is the var. lazxa of the 
Fl. Brit. Ind., distinguished from the type by its cylindric and more 
lax racemes. 
4.P.stagninum, Buch.-Ham. ex Meissn. in Wall. Pl. As. Rar. 
iii, 56; F. B. I. v, 37; Prain Beng. Pl. 887 ; Gage in Rec. Bot. 
Surv. Ind. vi, 397. 
A simple or branched annual. Stems erect or ascending, eglandular. 
Leaves 3-5 in. long, lanceolate or linear-lanceolate, strigosely pubes- 
cent on both surfaces, often glandular beneath, usually silky when 
young, turning grey when dry ; stipules strigose, cilia shorter than 
the tube. Racemes erect, many-flowered ; peduncles usually long 
and stout, sub-silkily strigose ; bracts close, more or less hairy and 
ciliate on the margins. Perianth white, eglandular. Styles long 
connate below. Nutlets 3-gonous, pitchy black. 
In wet places in the Sub-Himalayan tracts from Dehra Dun to N. Oudh. 
Distris.: Himalayan outer ranges from the Punjab to Sikkim ; also 
in Bengal, Assam and Burma. This plant is so closely related to 
P. barbatum that, apart from certain difierences in regard to pubes- 
cense, characters which are not invariably constant, the two might 
well be united under one species, treating P. stagninum as a variety 
of P. barbatum, as already suggested by Sir Joseph Hooker and Major 
Gage. 
8. P. barbatum, Linn. Sp. Pl. 362; Royle Ill. 313; F. B. I. v,. 
87 ; Watt E. D. ; Prain Beng. Pl. 887 ; Gage l. c. 397. P. rivulare,. 
Ken. ; Roxb. Fl. Ind. 1, 290. 
Astout annual. Stems erect, glabrous or nearly so. Leaves 4-7 in. long,. 
lanceolate or linear-lanceolate, acuminate, tapering to the acute base, 
glabrous except the ciliolate margins and midrib beneath ; stipules. 
strigose, the mouth with cilia which exceed the length of the tube. 
