1924] Merrill: New Species of Plants from Indo-China 425 



Indo-China, Cho-Ganh, Dr. A. Pet el at 1479, October, 1923. In 

 thickets. 



Within the section, a species stron^h' characterized by its densely 

 pubescent, 3-celled ovaries. 



Strophioblachia fimbricalyx Boerl. Handl. 



Fl. Nederl. Ind., vol. 3, part 1, 1900, pp. 236, 284. 

 Stroijhioblachia gJandulosa Pax in Engl. Piianzcnreich, vol. 47, 1911, p. 36, 

 f. 10. 



Indo-China. Cho-Ganh, Dr. A. Petelot S32, 923, December, 1922, 

 and June, 1923. On limestone hills, 



A monotypic genus originallj^ described from Celebes, but now 

 also known from Luzon, Palawan, Panay, Mindanao, and Bongao in 

 the Philippines. 



Trigonostemon Petelotii Merr. sp. nov. § Dichotomae sect. nov. 



Frutex vel arbor parva, partibus junioribus leviter adpresse 

 hirsutis, ramis glabris, lenticellatis, subpurpureis ; f oliis membranaceis 

 vel chartaceis, oblongo-laneeolatis ad oblongo-oblanceolatis, 3 ad 10 em. 

 long-is, 1.5 ad 3.5 cm. latis, olivaceis, obtuse acuminatis, margine dis- 

 tanter glanduloso-denticulatis, basi acutis ad obtusis, 3-nerviis, nervis 

 lateralibus utrinque 3 vel 4, tenuibus, distantibus, baud perspicuis, 

 supra minute albido-verruculosis, subtus ad costa nervisque leviter 

 adpresse hirsutis ; petiolo 5 ad 18 mm. longo ; inflorescentiis ^ 

 axillaribus, 3 ad 6 cm. longis, pedunculatis, dichotome ramosis, sub- 

 cymosis, paucifloris, leviter hirsutis; sepalis inaequalibus, ellipticis ad 

 obovatis, leviter ciliatis, baud glandulosis, majoribus 2.5 mm. longis, 

 retusis, minoribus 1.5 ad 2 mm. longis, truncatis ; petalis 5, elliptico- 

 obovatis, rotundatis, glabris, 6 mm. longis, 3 mm. latis; filamentis 

 columnae 1.5 mm. longae, antheris 3, brevissime stipitatis, 0.6 mm. 

 longis, orbiculari-ellipticis, integris ; disco 1 mm. diametro ; floribus 

 5 fructibusque ignotis. 



Indo-China, Cho-Ganh, Dr. A. Petelot 795 (type), 922, June, 1921, 

 and December, 1922. On limestone hills. 



For this very distinct species I have proposed the new section 

 Dichotomae, oh account of the dichotomous, cymose, axillary staminate 

 inflorescences and the entire anthers, 



Cleistanthus long-ipedicellatus Merr. sp, nov. § Pedicellati 



Frutex vel arbor parva, ramulis leviter pubescentibus exeeptis 

 glabra, ramis teretibus, lenticellatis: foliis chartaceis, olivaceis, nitidis, 

 oblongo-ellipticis ad oblongo-lanceolatis, 7 ad 13 cm. longis. 2.5 ad 

 3,5 cm. latis, acutis ad di.stincte acuminatis, deorsum angustatis, basi 



