Plate 2403. 



DIPTEROCARPUS BOURDILLONI, Brmidis. 



DiPTEROCARPACE.E. Tribe D1PTEROCARPE.E, 



D. Bourdilloni, Brandls (sp. 7iov,) ; arbor ingens, ramulis stipulis 

 petiolisque dense fulvotomentosis, foliis tenuiter coriaceis longiuscule 

 petiolatis ellipticis breviter acuminatis, subtus pra^cipue in nervis 

 venisque pilis longis paucis stellatis brevibus plurimis tectis, floribus 

 magnis, calycis tubo glabro turbinate late 5-aIato, segmentis duobus 

 linearibus tubum superantibus, petalis lineari-spathulatis extus 

 velutinisj staniinibus 30, antheris hastatis, valvis subrequalibus, arista 

 autlieram vix sequante, fructibus obovoideis glaberrimis nitidis, 

 segmentis duobus linearibus longis, tribus obtusis fructum lequautibus. 



Hab. Evergreen forests on the Periyar river, in North Travancore^ 

 at 200-500 ft. above sea-level, BourdiUon. 



Folia 8-12 poll, longa, 6-7 poll, lata, nervi secundarii utrinque- 

 15-20, tertiarii plerumque paralleli, interdum reticulati ; petioli l|-3. 

 poll, longi. Flores 2-poIlicares. Calycis fructiferi segmonta Ion 

 5-6 poll, longa, nervis e basi tribus venisque reticulatis conspicuis 

 Fructus 1^ poll, longus, alis 5, fructus diametrum dimidium 

 a^quantibus. 



An enormous tree, 150 feet high, with a straight trunk, 5 feet 

 diameter. Wood not good, but used for dug-out canoes [B our dill on). 

 Leaves corresponding exactly to those of this species were in 18G8 

 collected by me in the evergreen forests on the Carcoor Ghat, in 

 Malabar. In these specimens the long hairs on the midrib pre- 

 dominate, whereas in the Travancore specimens the tufts of stellate 

 hairs predominate. It is probable that this species occurs along the 

 ^^ esteru Ghats from Malabar southwards, while D. indimis^ Bcdd., is 

 found on the Western Ghats of the more northern districts, particularly 

 in Canara. These are the only two species of Dipterocarpns known from 

 the western peninsula of India. While D. indiciiSy Beddome, is nearly 

 related to, and has even been united with, D. turbiiiatus^ Gsertn. f., a tree 

 which grows on the west side of the eastern peninsula, from Cachar to 

 Malacca, D. Bourdilloni is closely allied to D, insignis^ Thw., of 

 Ceylon. D, Bourdilloni differs, however, in the shape of the leaves, 

 their hairy underside, and longer petioles. The wings of the fruiting- 

 calyx also are different. — D. Bra> ois. 



Fig. 1. Bud. 2. Flower. 3. Anther, back and front view, 4. Baso of caljx and 

 oviiry, later stage. 5, Vertical section of ovary. FUjs. 3, 4, and 5 enUinjed. 



