D1ELS—POLYGONACEAE. a 261 
pedicelli 1°5 mm. longi. Petala rosea 3 mm. longa. Ovarium 
o’8 mm. longum, styli 3 longe connati, apice liberi, stigmata 
capitata. Nux perianthio inclusa, perianthium subaequans, 
trigona brunnea nitida. 
“Slender plant of 1-14 ft. Flowers pale rose. Amongst 
long grass on mountain meadows on the eastern flank of the 
Lichiang Range. Lat. 27°25’N. Alt. 10o-11,000 ft. September 
1906.” G. Forrest. No. 20985. 
Sect. LEchinocaulon. Allied to the polymorphous P. 
pedunculare, Wall., from which it differs by the shape of the 
leaves, the bracts, and the trigonous nut. 
Polygonum calostachyum, Diels. Sp. nov. 
Caudex percrassus, stipulis fuscis dense obtectus. Caulis 
0°3-0°6 m. altus, glaber, foliatus. Foliorum basalium petiolus 
5-7 cm. longus, latus; lamina subchartacea, supra lucida subtus 
parce puberula, ceterum glabra, elliptica, basi rotundata vel 
inaequilateraliter in petiolum decurrens, apice breviter acuminata, 
10-15 cm. longa, 3°8-4°6 cm. lata. Folia caulina petiolo stipulis 
breviore suffulti, lamina basi subcordata nonnunquam subamp- 
lectens. Racemi 4-5 cm. longi, fere 2 cm. lati; bracteae 
imbricatae late tubulosae, limbi lobi apice breviter acuminati, 
pedicelli graciles 5-7 mm longi. Flores (an semper ! ?) 
suberecti vel patuli. Corolla “intense kermesina,” sicca 
atropurpurea, petala ovato-elliptica 5-6 mm. longa, 3-4 mm. 
lata. Stamina 8. Ovarium elongatum, styli liberi 4 mm. 
lon, 
= “pit of 1-2 ft. Flowers deep crimson. Moist mountain 
meadows on the eastern flank of the Mekong-Salwin divide. 
Lat. 28° N. Alt. g-11,000 ft. September 1904. S.-E. Tibet.” 
G. Forrest. No. 241. 
Also Tsekou (Monbeig in Herb. Kew !). 
Sect. Bistorta. An allied plant to this was collected in a very 
incomplete state by Griffith, in Bhotan, on rocks above Sanah 
vix infra 9500 ad 10,000 ft. (Griff. Itin. Notes, p. 410, n. 637.) 
(P. Griffithit, Hook. f. cf. Hook. Fl. Brit. Ind. v, 54.) It may 
prove identical with our new species. 
Polygonum subscaposum, Diels. Sp. nov. 
Caudex crassus, apice stipulis amplis fuscis foliorum basalium 
coronatus. Caules complures non nisi basi foliati, superne squamis 
fuscis (ochreis elaminatis) tecti, 15-25 cm. longi, glabri. Folio- 
rum basalium petiolus 2°5-4 cm. longus, latus, glaber; lamina 
subherbacea, supra scabra subtus tomento pannoso pallide 
cinnamomeo vel albido dense vestita, + elliptica vel elliptico-ovata, 
ad 12 cm. longa 6 cm. lata, sed dimensionibus varia, nervi numerosi 
