2471 Theaceae. Theophrastaceae. Thymelaeaceae. Tiliaceae. 247 



less than half the lengtli of the sepals and besides tliey are imguiculate 

 gibbose or pitted, and the beaiitiful discoid basal gland of Colona is 

 replaced by a peculiar glandulär coating of the clawlet. In the fruit, 

 the form of which is also soniewhat distinct, we have always 3 coccules 

 and these contain not 1, but niostly 4 seeds each, the reduced nuniber 

 of 2 having been fouud in a few cases only. Tliese differential cha- 

 racters, and the two widely separate areas of geographica! distribution, 

 seem to be sufficient to establish the generic status of our Istlnnian 

 tree, even tliough the fundamental distinotion, as derived froni the 

 comparative structure of the enibryo, still remains doubtful. 

 G. isttimica Pittier 1. c. p. 314. — Panama (Pittier n. 5445). 

 Grewia heterotricha Burret in Engl. Bot. Jahrb. LI (1914) p. 342. — Sansibar- 

 küstengebiet. 

 G. Bunetii Ulbr. 1. c. p. 344. - Südkameruner Waldgebiet (Mildbraed n. 4205). 

 G. deserticola Ulbr. 1. c. p. 344. - Nördl. Hereroland (Dinter n. 2742). 

 G. leptopus Ulbr. 1. c. p. 346. — Sansibarküstengebiet (Holtz n. 1048. 3087). 

 G. Stolzii Ulbr. 1. c. p. 347. - Nördl. Nyassaland (Stolz n. 1138). 

 t/. sect. nov. Burretia Hochr. in Ann. Conserv. et Jard. Bot. Geneve XVIII 

 (1914) p. 83. 



Huie sectioni duae sequentes atque G. polypyretia Baker e. 

 descr. attribuendae 

 G. (§ Barr.) tamujera Hochr. 1. c. p. 83. — Madagaskar (Richard n. 342). 

 G. (§ Barr.) Burretiana Hochr. 1. c. p. 85. — Madagaskar. 

 G. lactea (Delile n. nud.) Hochr. 1. c. p. 87. — Senegambia. 

 G. mariannensis Merrill in Philipp. Journ. of Sei., 0. Bot. IX (1914) p. 109. — 



(niam (Experim. Stat. n. 133). 

 Heliocarpus diclinus Hochr. in Ann. Conserv. et Jard. Bot. Geneve XVIII 

 (1914) p. 117. - Santa Marta, Colombia (Herbert H. Smith n. 1908). 

 H. popayanensis H. B. K. var. grandifoUiis Hochr. 1. c. p. 116. — Bolivia 



(Miguel Bang n. 1455). 

 H- boliviensis Hochr. 1. c. p. 118. — Bolivia (Miguel Bang n. 1491). 

 H. Rosei Hochr. 1. c. p. 119. ^ Bolivia (Miguel Bang n. 2305). 

 H- stipulatus Hochr. 1. c. p. 121. — Peruvia (Poeppig n. 3102). 

 H glabrescens Hochr. 1. c. p. 122. — Mexiko (Galeotti n. 4154). 

 H- tigriniis Hochr. 1. c. p. 123. — Mexiko (Langlasse n. 708). 

 H. terebinthinaceus (DC.) Hochr. 1. c. p. 125 (= Grewia terebintfiinacea DC. 



= Heliocarpus Nelsonii Rose). 



Oubanguia alata Bak. fil. in Rendle, Baker, Wernham, S. Moore and others, 



South Nigerian Plauts, London (1913) p. 15. — Oban (Talbot n. 1513). 



Pentadiplandra Brazzeana Baill. (ex descript) in Rendle, Baker, Wernhani, 



S. Moore anj others, South Nigerian Plants, London (1913) p. 15. — 



Oban (Talbot n. 1562). 



Sparmannia macrocarpa Ulbr. in Engl. Bot. Jahrb. LI (1914) p. 341. — Galla- 



hochland (Ellenbeck n. 1407). 

 Trichospermum leytense Merr. in Philipp. Journ. of Sei., C. Bot. IX (1914) 

 p. 374. - Leyte (C. A. Wenzel n. 837). 



*) Colona Cav. is used here in place of Columbia Pers., because the 

 Substitution of names made by Persoon does not appear to be justified, the 

 first one being just as good as the latter. 



