BILLENIACE2E. 



101 



Tlius defined,' the genus Tetracera consists of half a hundred 

 species of small trees or shrubs (often climbers) found in warm 

 countries all over the world; in equinoctial America,' Senegal,^ 

 Madagascar, tropical Asia," North Australia,* and New Caledonia." 

 Some species of Delima come from tropical Asia, and the Indian 

 Archipelago.^ Ricaurteah from Columbia; DoUocarpus ixom. Guiana, 

 Brazil, and some other parts of South America. 



The American genus Bavilla^ (figs. 146-148) may be considered 

 as Tetracera,^ in which; on the commencement of anthesis, the two 



Davilla wormicefolia. 



Fig. 146. 

 Flower. 



Fig. 147. 

 Longitudinal section of flower. 



interior sepals became greatly developed, approaching one another 

 to form two hollow hemispheres which persist around the fruit. The 

 petals, stamens, and carpels, constructed like those of Tetracera, present 

 the same modifications in form as in that genus."* 



Tetracera. j 

 Sections 4. 



JSuryandra(^WaMbomia). Several 



carpels. 

 Delima (Delimopsisl). Carpel 

 single; dehiscence univalvular. 

 Ricaurtea, Carpel single; de- 

 hiscence bivalvular. 

 DoUocarpus (Othlis, Soramia, 

 Calinea, Tigarea ?). Carpel 

 single, fleshy, indehiscent. 

 ' AUBi., ~ Ouian., ii. 920, t. 350, 351. — 

 A. S. H., Flor. Bras. Merid., i. 11. — Peesi., 

 Mel. Sank., ii. 71. — Pi. & Teian., Ann. c. 

 Nat., ser. 4, xvii. 20. — Eichl., in Maet., Fl. 

 Bras., Dilleniae., 83, t. 21-23. 



^ GuiLLEM. & Peee., Tentam. Fl, Senegamb., 

 i. 2, t. i. 



* H00KEE&Tn0MS.,J^?.J)W?.,i.62.— MlQUEL, 



Fl. Lid. Bat., i. pars alt., 8. — TuwAiT., Fnum. 

 Fl. Zeyl., 1. 



* F. Muell., Fragm., v. 1, 191. 



' Labill., Sert. Caled., 55, t. 55. — Mont- 

 EOUZ., Fl. Ins. Art {Ilem. Acad. Li/on, x. 175). 

 —Be. & Ge., Bull. Soc. Bot. Fr., xi. 190; 

 Ann. Sc. Nat., sir. 5, ii. 150. 



7 Benth., Fl. RongHr., 7. — Miquel, Fl. Ind. 

 Bat., i. pars alt., 7. Deliinopsis, a Javanese plant, 

 described in the same work (9) all the organs of 

 which are covered with hairs and whose flowers 

 have but one carpel should not, it seems to us, 

 be separated from the Tefraceras, of the section 

 Delima. 



^ Vandeli., ex DC, S:i/sf., i. 404; Prodr., i. 

 fi9.— Spacii, Suit, a Buff., vii. 415.— Exdl., 

 Gen., n. 4763.— Walp., Bep., i. 66; ii. 746; 

 V. 13; Ann., i. 15; ii. 17; iv. 36.— B. H., Gen., 

 12, n. 2.— H. Bn., Adansonin, vi. 269, 271, 

 272. — Eieronia Velloz., Fl. Fliim., v. t. llfi. 



9 A. S. 11., Fl. Us. Brasil., t. xxii. xxiii.; 

 Ann. Sc. Nat., sit. 2, xvii. 130. — Eicui., Oyj. 

 cit., 94, t. 24-27.— Pkesl., Rel. Hank., ii. 72. 

 Seem., Bot. Her. t. 13. — Pl. & Teiana, Ann. 

 Sc. Nat., ser. 4, xvii. 18. — II. Bn., Adansonin, 

 vi. 272. 



'" There is sometimes a single carpel, as in 

 D. mnl/ijlora A. S. H., sometimes two, ns 

 in D. elliptica A. S. II., and somotiHies even 

 more. In the flowers of certain siiocics, such 

 as D. rugosa Poie., the gynasccum is pretty 



