NYCTAGINACEÆ. 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. 
Boerhaavia' is nearly related to Orybaphus, 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 
which they envelop. Moreover, the flowers, generally small and 
inconspicuous, present in their different parts those numerous 
variations of form and proportion which 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. yibbosa it is unsymmetrical and gibbous on one side. 
This has given rise toa 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 Myctaginacee. Certain Boerhaavias 
have their flowers in spikes ;* 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 

Fruct., iii. 182, t. 214.—Lamx., Dict. i. 85, n. 2; 
Til, t. 58.—Lukr., Slirp., 63, t. 31.—H. B. K. 
Nov. Gen. et Spec., ii. 214.—Enpu., Gen. n. 
2005 (part.).—C. Gay, Fl. Chil., v. 208.— 
Cuotrs., Prodr., 434, n. 5.—A. malacoides 
Benru., Voy. Sulph., Bot., 44.—Wedelia 
Lert., I, 180 (nee Jacg.). 
1 L., Hort. Cliff.,17; Gen. ed. 1, n. 22— 
ADANS., Fam. des Pl, ii. 265.—J., Gen., 91; 
in Ann. Mus., ii. 208, t. 127.—Porr., Dict., v. 
52; Suppl., iv.319; JU/., t. 4—ENDL.,, Gen. n. 
2000.—Cuots., Prodr., 449, n. 15.—Dantia 
Lipp., mss. (ex DEL, Fl. Ægypt. ii. 2 nec 
Dop.-Tu.).— Antanisophyllum VaiuL., in Act. 
Par. (1792), 190.—Senkenbergia SCHAUER, in 
Linnea, xix. (1847), 711.—Tinantia Marv. et 
Gat., in Bull Acad. Brux., xi. n. 4, 30,—Cnors., 
Prodr., 457, n. 16.—Lindenia Marr. et Zucc. 
loc. cit., 17 (nec Hoox.). 
2 Pav., in Herb. (ex A. Gray, Brief Char..., 
9, n. 6).—Lindenia gypsophiloides Mart. et 
Gau.—Tinantia gypsophiloides Marv. et Zucc. 
—Senkenbergia annulata SOHAUER, loc. cit. 
3 À name which A. GRAY applied to a section 
of the genus Boerhaavia. 
* Notably Senkenbergia and B. spicata CHors., 
Prodr. (456, n. 21). 
