———— een. -ceetenibieeen 
—ta —— 
— 
jueves ae 
The nomenclature of Calonyction bona-nox 
Homer D. House 
The species described in Dr. Small’s recent Hora of the south- 
eastern United States, as Calonyction bona-nox,* is known under the 
common name of moonflower. A study of available herbarium 
material shows that two very distinct species are represented, and 
in an effort to determine their proper status a formidable array of 
synonymy is encountered. The condition of affairs was pointed 
out by Kuntze f in 1891, and briefly the facts are as follows: In 
the first edition of Species Plantarum, Linnaeus describes Convol- 
mlus aculeatus t and Ipomoea alba.§ Later, Linnaeus combines 
them under the name of lpomoea bona-nox,|| and includes there 
nearly all of the citations given under the two previously named 
Species, Lpomoea alba is again taken out under the name of Con- 
volvulus &randifiorus,§| and given the same pre-Linnaean citation as 
Ipomoea alba with an additional citation. These changes may be 
shown by the following tabulation. 
—S_- . 
Pre-Lj ‘ Convoluvutus | [pomoea Ipomoea Convolvulus 
-Linnaean citations. aculeatusL | alba L. | bona-nox L. | grandifiorus 
1762. | L f 178. 
3- 
BSS eta Re 
Hort. Cliff, 496 
ae ae ee 
ed Bod 
aad ly t. 276. f. 3. x | x | 
Re, gotm™ 553 Hist. 1: 4. 96. f. 1. x Roe | 
Be uppl. 371. x | 
Rheny ans 296, | x po K6 | res | “ 
ed. Mal. x1: ; 
H baa? Nes, I: 4, 50 | | x x ae 
tne 
The genus Calonyction Choisy ** is based upon the characters 
of large salverform corolla, exserted stamens and thickened 
*Small, J. K. Flora of the Southeastern United States, 961. 1903. 
t Kuntze, O. Rev. Gen. 442. 1891. 
Il Sp. Pl, Ed. 2, 228. 1762. 
{ Linn. f. Supplement, 136. 1781. 
** Choisy. Mem. Soc. Phys. Genev. 6: 440. 1833. —Conv. Or. 59. 1834.—In DC 
1845. 
ie Prodr, 9: 345. 
589 
