- 43 — 



Fructus immaturus, stellato-pilosus, turbinatus, alarum nervis vix 

 prominulis. Frnctus maturus, sphaericus (diam. 14 — 18 mm.), laevis, 

 glaucus, apice pruinosus, calycis lobis 2 accrescentibus, coriaceis, 

 glabris, parum inaequalibus, linearibus-oblongis, e basi brevissirne 

 angustatis, apice paulum attenuato-rotundatis (130— 133 mm. long., 

 larg. 20 mm.), nervis primariis 3, subtus prominulis, ditissime ra- 

 mosis, calycis lobis 3 non accrescentibus, aequalibus, obtusis (10 mm. 

 long., 6—7 mm. lat.). 



A spec, affin. : Dipterocarpo turbinate Gaertn. f. differt foliis brevio- 

 ribus, e basi cuneiformibus, nervis secnndariis, îuimerosioribus, pilosis 

 nec scabris, fructu sphaerico nec ellipsoïdeo, nervisque alarum lateralibus 

 vix conspicuis. 



Jungle near Lem Dan, a very tall tree with bare stem (n° 518 a). 



2. D. angustialatus Heim sp. nov. 



Rami novelli compressi, puberulo-grisei. Rami adulti mox 

 glabri, fusco-grisei, multis lenticellis punctulati. Stipulae gemmae 

 acutae, angustae, fulvo-pilosae. Petioli longi, supra minute canali- 

 culati, pilis ful vis, adpressis, obtecti (25—40 mm. long.). 



Folia chartacea, in sicco fusca, obovato-oblonga, basi cuneato- 

 attenuata, apice attenuata, breviter acuminata (130 — 160 mm. long. 

 — 60 — 80 mm. larg.), margine leviter undulata nec nitida, in pagina 

 superiore pilis adpressis fulvis fugacibus, praecipue in nervo medio 

 et margine, ciliata, in pagina inferiore eisdem pilis nervus medius, 

 nervi secundarii (utrinque 12 — 15) prominuli, margine arcuati dense, 

 nervique tertiarii transversales, sparsim obtecti. 



Racemi, glabrescentes, nigrescentes, 5-floriferi. Flores? 



Fructus maturus sphaericus. apice paulum turbinatus, laevis, 

 apice leviter pruinosus (diam. 20 mm.), calycis. lobis majoribus 

 accrescentibus 3, chartaceis, glabris, aequalibus, longis, linearibus, 

 angustis, basi vix attenuatis, apice paulum attenuato-rotundatis (140 

 mm. long., 45 mm. larg.), nervis primariis 3, utrinque prominulis, 

 ditissime ramosis, calycis lobis non accrescentibus 3, subaequalibus, 

 obtusis (40 — 43 mm. long., 7—9 mm. larg.). 



Spec, affin. Dipterocarpo vestito Wall., cujus fructus ignotus, differt 

 praecipue fulvo-pubescentia nec stellato-canescentia. 



Jungle near Klong Son, a tall tree (n°6S0a). The native name of this 

 tree is „ton yang". 



Sect. Alati Dyer. 



3. D. alatus Roxb. Hort. Beng. (1814) 42. Fl. Ind. Il, 614. 

 Jungle near Klong Sarlakpet (n° 742). 



Area: Pegu, Tenasserim, Siam, Cambodia, Cochinchina. 



4. D. parvifolius Heim. sp. nov. 



Rami novelli compressi, fulvi, dense tomentosi. Rami adulti 

 mox glabri, nigrescentes, rugosi, lenticellis non conspicuis. Stipulae 



