8 
Burma (contracted For. Fl. Burma), and to Collett and Hemsley’s 
paper on the Flora of the Shan States published in the Journal of 
the Linnean Society. References have also been given to Lecomte’s 
Flore Generale de l’Indo-Chine so far as that work has been 
published (contracted Fl. Indo-Chine), and to various other papers 
which serve in the writer’s opinion to throw light on the species 
under consideration. ’ 
The distribution of the species is taken, except when otherwise 
stated, from specimens in the Kew Herbarium, Several species are 
quoted, of which no specimens from Siam have been seen, but in such 
cases the authority for the record is alone quoted. 
The sequence of Bentham and Hooker’s Genera Plantarum is 
followed on the whole and the species are arranged alphabetically 
under the genera. 
As Dr. Kerr is still forwarding large collections the present 
instalment, which deals with the Polypetalae, includes the specimens 
received at Kew up to the end of the year 1910. 
New species which have already been published are denoted by an - 
asterisk (*), 
The Lao names, except when otherwise stated, are taken from 
Dr. Kerr’s notes. 
POLYPETALAE. 
RANUNCULACEAE. 
Clematis smilacifolia, Wail—F.B.L., i. p. 3; For. Fl. Burma, i. 
p- 16; Williams, Bull. Herb. Boiss., v. (1905) p. 22; Fl. Indo- 
Chine, i. p. 3. 
Chiengmai, Doi Sootep, 500-700 m., Hosseus, 297. 
Distr. India, China, Tonkin, Malaya. 
DILLENIACEAE. 
Tetracera sarmentosa, Vahl, var. Loureiri, Finet et Gagnep.—Fl. 
Indo-Chine, i. p. 16. 
Bangkok, Zimmermann, 74. 
Distr. (of var.). Cambodia, Cochinchina, Malay Peninsula. 
Dillenia Kerrii, Crazb, sp. n., ab affini D. scabrella, Roxb., floribus 
majoribus, pedicellis brevioribus facile distinguenda. 
Arbor decidua, ramulis crassis primo breviter appresse fulvo- 
pubescentibus mox glabris. Folia elliptica, utrinque rotundata sed 
basi rarissime inaequalia cuneata, 28°5-30 cm, longa, 14°2-17:2 cm. 
lata, chartacea vel subcoriacea, supra nervis nervulisque pilis 
brevibus rigidiusculis parce instructa, subtus costa nervisque 
primariis fulvo-pilosa, nervulis ut in pagina superiore, nervis 
lateralibus utrinque ultra 40 ad marginem simplicibus inter se - 
5-7 mm. distantibus, cum costa supra conspicuis subtus pro- 
minentibus nervis transversis subtus prominulis, margine nervis 
excurrentibus denticulata ; petioli 4°5-6°5 cm. longi, supra valde 
canaliculati, basi dilatati, ut in costa appresse fulvo-pubescentes. 
Flores mane expansi (ex Kerr), plerumque gemini, ramulis 
brevissimis ligno anni praeteriti exoreuntes; pedicelli 1°5-2°5 cm. 
longi, crassiusculi, densius puberuli, apicem versus bracteola ovato- 
lanceolata obtusa 9 mm, longa 6 mm. lata instructi. Sepala exteriora 
