Homalium Jacquin 



Merr. JaA 21: 377. 1940 

 Homalium Petelotii sp. nov. § Blackwellia. 



Arbor parva vel frutex, inflorescentiis plus minusve subcinereo- 

 puberulis exceptis glabra, ramis teretibus, perspicue lenticellatis, gracili- 

 bus; foliis oblongis vel oblongo-ellipticis, firmiter chartaceis, 5-9 cm. 

 longis, 2-?, cm. latis, breviter acuminatis, basi acutis, subolivaceis, 

 glaberrimis, margine crenato-serratis vel crenato-dentatis, nervis pri- 

 utrinque 7-8, curvato-adscendentibus, arcuato-anastomosantibus, 

 sub. elevatis, distinctis; petiolo 2-4 mm. longo, glabro vel obscure 

 puberulo; racemis axillaribus, solitariis, simplicibus, 9-13 cm. longis, 

 obscuve subcinereo-puberulis, floribus plerumque binis vel solitariis, 

 haud confertis, internodiis 2-10 mm. longis; floribus 6-meris, circiter 

 8 mm. longis, pedicellis cinereo-puberulis, 2.5-3 mm. longis, infra calycem 

 articulatis; calycis tubo anguste obconico, 3 mm. longo, leviter puberulo, 

 obscure sulcato; sepalis 6, anguste oblongis, 3 mm. longis, 0.5 mm. latis, 

 obtusis, extus obscure puberulis; petalis 6, spathulatis vel anguste 

 oblongo-obovatis, circiter 4 mm. longis, 1.5 mm. latis, obtusis, basi cune- 

 atis, margine ciliatis; staminibus 6, filamentis glabris, 4 mm. longis; 

 ovario consperse subhirsuto, stylis 3, liberis, gracilibus, circiter 3 mm', 

 longis. subglabris vel deorsum leviter subhirsutis. 



Indo-China: Tonkin, Vinh Yen Province, massif de Tam Dao, 

 Pételot 5983, October 10, 1936, in shrubbv savannas, altitude about 

 900 m. 



A species of the section Blackwe/lia characterized by its slender con- 



spicuously lenticellate branches, ail parts except the inflorescences being 



glabrous. It belongs in the gênerai alliance with Homalium hainanevse 



^ gnep., differing among other characters in its distinctly scattered, 



ger flowers, thèse not being crowded as in Gagnepain's species. 



