Botanical Magazine 106 - 1880.pdf - hibiscus.org

TAB. 6503.
POLYGONUM CUSPIDATUM.
Native of Japan.
Nat. Ord. POLYGONACE/E.•Tribe EüPOLYGONE^E.
Genus POLYGONTTM, Zinn.; {Beruh, et Hook.f. Gen. Plant, vol. ii. p. 97.)
POLYGONUM (Pleuropterus) cuspidatum ; glaberrimum, caulibus e rhizomato sub-
terráneo perplurimis fasciculatis elatis robustis inclinatis foliosis, foliis petiolatis
late cordato-ovatis v. ovatis basi late truncata acurainatis utrinque elevato-
reticulatis, oehreis brevissimis deciduis, racemis axillaribus folio brevioribus
sessilibus solitariis simplieibus v. basi ramosis v. paniculatis ramis divarieatis,
bracteis ovatis obtusis 1-plurifloris rachique puberulis, pedicellis capillaribus
infra medium articulatis, calyce fructifère obcordato late 3-alato, stylis 3
brevibus.
P. cuspidatum, Sieb, et Zuce. Fl. Jap. Farn. Nat. 2, p. 84 ; Meissn. in DC. Prodr.
xiv. pars 1, p. 136 ; Regel, Gartenfl. vol. ix. p. 152, t. 291 ; Groenl. in Rev.
Sortie. 1858, p. 30, cumie.; Miq. Prolus. Fl. Jap. p. 300; Franck, et
Savat. En. PI. Jap. vol. i. p. 404.
P. Sieboldi, de Vriese in Ned. Kruidk. Arch. vol. ii. p. 254, et in Jahrb. Kon.
Ned. Maatsch. 1850, cum Ic. ; Lindl. et Paxt. Mag. Bot. vol. i. p. 137,
cum Ic. ; Fl. Gard. 1852, part i. p. 137, f. 90.
Under P. compaction, figured at Tab. 6476 of this volume,
I have alluded to that plant as possibly a form of P. cus-
pidatum, differing very much in habit ; but a re-examination
of the Garden and Herbarium specimens tends to show
them to be specifically distinct, especially in the form of
the fruiting calyx, which in P. cuspidatum is obcordate and
much narrowed at the base, but in the native specimen of
P. compactum is almost orbicular, and abruptly narrowed
into the pedicel ; the crisped margins of the leaves, too, are
apparently a permanent character of the latter-named
species. There is still a third species of this group to
figure, the P. sachaliense, the largest of all, and of which a
drawing is prepared for this work.
P. cuspidatum is a native of Japan, and there is in the
Herbarium a very similar plant from North China, collected
by Dr. G. Shearer at Kieu Kiang; the specimens of this
JULY 1ST, 1880.