NYGTAGINACE2E. 7 



drous. The lower portion of their perianth, which persists around 

 the fruit, presents two lateral ribs, developing into hard laciniate 

 wings, and bending outwards so as almost to meet. They form thus 

 a sort of cell, exterior to that of the indusium, and in which two 

 series of vertical, parallel, glandular tubercles project, developed upon 

 the exterior surface of the anterior wall of the indusium. 



JBoerhaavia 1 is nearly related to Oxybaplms, and is only essentially 

 distinguished therefrom by one single point, the bracts accompanying 

 the flowers varying in number from one to three, are small, often 

 caducous, and do not form a persistent involucre around the fruit 

 whicli they envelop. Moreover, the flowers, generally small and 

 inconspicuous, present in their different parts those numerous 

 variations of form and proportion whicli we have observed in 

 Mirabilis and in the neighbouring types. The perianth, more or 

 less contracted towards the middle, has a superior petaloid portion 

 infundibuliform or campanulate and caducous, and an inferior portion 

 which persists around the fruit, and is tubular, obconical, or clavi- 

 form. In B. gihbosd: it is unsymmetrical and gibbous on one side. 

 This has given rise to a genus Senkenbergia* In the others it is 

 regular. The stamens are of the same number as the divisions of 

 the corolla, or more generally less numerous. There are often only 

 three, as in Oxybaphus, or two, or even one only. They are united 

 below, and protrude more or less from the corolla. The style is more 

 or less obtuse at its stigmatiferous apex. The induviate fruit is 

 analogous to that of the other Nyctaginacea. Certain Boerhaavias 

 have their flowers in spikes ; 4 others in umbels or verticils ; others, 

 again, in racemes or in capitula, simple or compound. All are 

 herbaceous or frutescent at the base, with opposite simple and 



F/uct., iii. 182, t. 214. — Lamk., Bict. i. 85, n. 2 ; Bar. (1792), 190. — Senlcenbergia Schatter, in 



III., t. 58. — LnfiR., Stirp., 63, t. 31. — H. B. K. Linncea, xix. (1847), 711. — Tinantia Mart, efc 



Nov. Gen. et Spec, ii. 214. — E>"DL., Gen. n. Gal., in Bull Acad. Brux., xi. n. 4, 30. — Chois., 



2005 (part.). — C. Gay, Fl. Chil., v. 208.— Brodr., 457, n. 16. — Lindenia Mart, et Zucc., 



Chois., Brodr., 434, n. 5. — A. inalacoides loc. cit., 17 (nee Hook.). 



Bexth., Yoy. Sulph., But., 44. — Wedelia 2 Pat., in Kerb, (ex A. Gray, Brief Char..., 



L02FL., It., 180 (nee Jacq.). 9, n. 6). — Lindenia gypsophiloides Mart, et 



1 L., Hort. Cliff., 17 j Gen. ed. 1, n. 22. — Gal. — Tinantia gypsopliiloides Mart, et Zucc. 



Ada>*s., Fam. des Bl , ii. 265. — J., Gen., 91 ; — Senlcenbergia annulata Schauer, loc. cit. 

 in Ann. Mils., ii. 20S, t. 127. — Poir., Diet., v. 3 A name which A. Gray applied to a section 



52 ; Suppl., iv. 319 ; III., t. 4. — Exdl., Gen., n. of the genus Boerhaavia. 



2000. — Chois., Brodr., 449, n. 15. — Dantia 4 Notably Senlcenbergia and B. spicata CHOIS., 



Lipp., mss. (ex Del., Fl. JSgypt., ii. 2 nee Brodr. (456, n. 21). 

 Dup.-Th.). — Antanisophyllum Vaill., in Act. 



