54 CXIX. POLYGONACEX. (J. D. Hooker)  [Polygonum. 
69. P. dumetorum, Linn.; Boiss. Fl. Orient. iv. 1032; stem twining 
or prostrate, leaves broadly ovate-cordate or subhastately cordate acuminate, 
fruiting perianth broadly oblong or obovate, 3 outer sepals broadly winged, 
pedicels very slender, not winged to the base, usually jointed below the 
middle, nut à in. long. Meissn. in DC. Prodr. xiv. 1. 135; Fl. Dan. 
t. 756 ; Engl. Bot. t. 2811. 
TEMPERATE HIMALAYA; from Kunawur to Kashmir, alt. 4-9000 ft.—DISTRIB. 
Europe, N. and W. Asia. . 
Habit of P. Convolvulus, but stem terete, flowers more racemose, pedicels capillary, 
and fruiting perianth very different. This last varies exceedingly in size and shape 
from elliptic oblong 4 in. long, to cuneate-obovate } in. long and ‘tapering into 
the shortly winged pedicel. I find no difference between nuts of this and P. 
Convolvulus. 
70. P. pterocarpum, Wall. Cat. 1690; stem twining, leaves broadly 
ovate-cordate acuminate, fruiting perianth cuneate-obovate rarely broadly 
oblong, 3 outer sepals broadly winged, pedicel very slender winged often to 
the base, nut din. long. Meissn. in Wall. Pl. As. Rar. iii. 62, and in DC. 
Prodr. xiv. 1. 135; Bab. in Trans. Linn. Soc. xvii. 118.—Polyg. n. 62, 
Herb. Hook. f. & T. 
TEMPERATE HIMALAYA ; from Sikkim to Simla, alt. 6-9000 ft.,—also in Kashmir, 
Stewart. ; 
Probably only a state of P. dumetorum, but the fruiting perianth is usually much 
larger, sometimes } in. long, or even 1} in. including the winged petiole, and the nut 
is always larger. In both there are obscure lines of pubescence on the stem and 
pet oles. ' 
DOUBTFUL AND IMPERFECTLY KNOWN SPECIES. 
P. (Bistorta ?) Grirriran, Hook. f.; very stout, leaves 6-7 in. long-petioled 
coriaceous oblong-lanéeolate acuminate pubescent beneath, petiole as long as the 
blade, raceme incurved very stout, bracts lanceolate densely imbricate.—Bhotan 
Himalaya; on rocks above Sanah, alt. 9500-10,000 ft., Griffith (Itin. Notes, 
p. 410, n. 637).—A remarkable plant, and quite unlike any other, probably near to 
P. Bistorta, but much more robust. The curvature of the top of the peduncle is 
possibly due to this terminating a pendulous branch. The specimens are very imper- 
fect, consisting of old, apparently radical leaves, and hollow glabrous stems or 
peduncles, a foot long and as thick as a goose-quill, each bearing the remains of two 
cauline leaves, and terminated by a stout incurved raceme 23 in. long. The raceme 
is clothed with membranous bracts enclosing each many pedicels, from which the 
perianths have fallen. The stipules on the stem are 1-2 in. long, quite glabrous, 
with free tips. . 
P. Hace, Royle mss ; Bab. in Trans. Linn. Soc. xviii. 110 ; Meissn. in DC. 
Prodr. xiv. 1. 139, from Nagkunda, is probably P. polystachyum, a common plant of 
that locality. 
P. PALUDOSUM, Griff. Rep. Bot. Gard. Calcutt. 1843, 39, is a mss. name and 
unidentifiable. 
POLYGONEARUM FAMILUE SEDIFOLIA, Wall. Cat. 6286, see p. 22. 
4. FAGOPYRUM, Gerin. 
Erect herbs. Leaves deltoid, hastately deltoid, or -cordate. Flowers in 
terminal or axillary cymes. Perianth 5-partite; segments subequal, not 
enlarged in fruit. Stamens 8, alternating with glandular disk-lobes. Ovary 
3-gonous ; styles 3, stigmas capitate. Nut much longer than the perianth, 
3-gonous. Cotyledons very broad, twisted, or rolled round the ascending 
radicle.—Species 3, Europe and Temp. Asia, one cultivated. 
