78 MR. G. D. HAVILAND: REVISION OF THE NAUCLEE.E. 
to deal with; but, so far as I can judge from the specimens I have seen, it 
would be very often possible to guess the part of Malasia from which a 
particular specimen came; that is to say, that the variations are to a 
considerable extent correlated with localities. I think it clearer to keep 
U. insignis distinct from U. pedicellata, but in keeping it separate I do 
not wish to assume any real specific limits. The points to be especially 
noted are the length of the corolla-tube, the length of the calyx-lobes 
and of the fruit-capsules, the degree of hairiness of the plant, and the size 
and shape of the leaves. 
3. Uncarta instents, DC. 
Ramuli fuliginei, subglabri, subacute 4-angulati. Folia 120- 
135 mm. lata, longitudinis cum latitudine ratione 14: 10, ovata, 
coriacea, supra glabra, subtus pubescentia, nervis 10-11. Petioli 
1-3 em. Pedunculi 6-7 em., ferruginei, pubescentes. Corolle 
tubus 18-20 mm. Calycis tubi pars inferior 4 mm., pars superior 
6 mm. ; lobi 2 mm. Bracteole nullæ.—U. insignis, DC. Prod. iv. 
348. U. Halli, Korth. Verh. Nat. Gesch. Bot. p. 165. U. sclero- 
phylla, Hook. f. Fl. Brit. Ind. iii. 28. Nauclea rotundifolia, DC. 
Prod. iv. 346. XN. luzoniensis, D. Dietr. Syn. Pl. i. 791. 
N. Haenkeana, Steud. Nom. ed. 2, ii. 186. 
MarasrA.—Borneo: Banjarmassin (Motley, n. 859); British North 
Borneo (Creagh). Ins, Philippine: Bohol (Cuming, n. 1811); Luzon 
(Vidal, nn. 370, 1465). 
This species differs from U. pedicellata chiefly in being much less 
pubescent and in the shorter corolla. The typical Philippine form has 
leaves as large as U. pedicellata, but the calyx-lobes are shorter relatively 
to the calyx-tube. U. Halli is a distinct variety with smaller leaves, and 
with the calyx-lobes half the length of the upper part of the tube, as in 
U. pedicellata. I have not seen a specimen of Nauclea rotundifolia, DC., 
but from the description it seems to be this plant. 
4. UNCARIA SCLEROPHYLLA, Roxb. 
Ramuli pubescentes; internodia 5-8 em. Folia 6-8 cm. lata, 
longitudinis eum latitudine ratione 17 : 10, elliptica vel elliptico- 
ovata, rarius basi cordata, supra glabra, subtus hirsuta, nervis 
10-11. Petiolilem. Stipule 5 mm. Pedunculi steriles 15 mm., 
pedunculi floriferi 6-9 em. Bracteæ 4mm. Florum pedicelli 1 em. 
Corolle tubus 14 mm., extra sericeus ; lobi3 mm. Stylus 34 mm. 
Calycis tubi pars inferior 3} mm., pars superior 5 mm.; 
lobi 1j mm. Pedicelli et partes inferiores calycum ssmpissime 
