378 POLYGONACEAE. [ Polygonum. 
2. R. albescens, sp. ». — Low decumbent. Leaves elongate, the lowest 
10—16‘  3!/2—5‘, on petioles of 4--6‘, cordate at the base with rounded 
ears and eroso-denticulate, the upper ones truncate, and only those of 
the inflorescence contracted at the base, gradually acuminate, gray-pu- 
bescent underneath and along the midrib on the upper face also. Panicle 
shorter, 6-10‘ long, naked, the capillary pedicels mostly reflexed. Flowers 
ive seine: both sexes in equal proportion. Male fl. as before, but larger, 
2‘. Fem. fl. small as in no. 1, the short outer divisions green, erect, the 
inner ones in fruit 4— 6 times as large, pale whitish, ovato-cordate, acuminate, 
without callus, reticulate, eroso-dentate. Achenes with acute protruding 
angles and receding faces, almost 3- winged. 
u! N. and buy slope mt Mt. Kaala; Kauai? (Kn. 161). — The plant seen by the 
0 
botanists of the U. S. E. E., as mentioned by Mann, no. 398, sub R. longifolius? The 
lowest leaves are Shad like nae of Scolopendrium vulgare. 
2. POLYGONUM, L. 
Perianth of 5, rarely fewer segments, all equal or the 2 or 3 outer ones 
enlarged. Stamens 8 or sometimes fewer. Styles 2 or 3, sometimes united 
at the base; the stigmas entire. Nut flattened or triangular, enclosed in 
the persistent perianth. Embryo curved halfway round the albumen, 
the radicle and usually the cotyledons slender. — Herbs. Flowers small, 
green or red, clustered in the axils of leaves or of small bracts, and then 
collected abi terminal spikes, Danes or panicles. 
A large genus with the range of the 
1. P, glabrum, Willd. — DC. Prod. XIV, 114. — Frect, 1—3 ft. high, 
glabrous, the sheathing stipules half the can i. the internode or longer, 
horizontally truncate, without hairs or bristles, Leaves lanceolate, 6—9/ >< 
I'/2—2"/2', acute at both ends, on petioles of about '/:‘ which rise from 
above the base of the sheath. Spikes slender but nearly continuous, 
2—4' long including the naked peduncle, arranged in a terminal panicle 
of 6-10‘ in length. Bracts turbinate, obliquely truncate, enclosing clusters 
of 2—5 flowers. Pedicels exserted, articulate with the flower. Perianth 
pinkish-green, small, not dotted. Stamens 6 (7—8), included. Style 
deeply bifid. Achene ems, black, shining. — Benth. Fl. Hongk: 
p. 288. — Griseb. Fl. W. Ind. p. 161. ee 
Common ce streams and alg Nat. «Kamole» , identical with the 
Tahitian for P. imberbe. — The species is se egg peer over India, China, the 
Viti Islds. gees tropical America 
Orper LXXI. CHENOPODIACEAE. 
Perianth small; segments 5 or in some flowers fewer, herbaceous, im 
bricate in the bald: Stamens 5, opposite the segments. Ovary free, with ; 
a single erect ovule. Styles 2 or 3, either free, or sip at the base. 
