STANDLEY — ALLIONIACEAE OF MEXICO. 415 



3. Mirabilis exserta Brandegee, Proc. Calif. Acad. II. 3: 165. 1891. 



Type locality, "Summits of the spurs of Sierra de San Francisquito, " Baja Cali- 

 fornia. 

 Specimens examined: 



Baja California: Type specimen; La Chuparosa, 1899, Brandegee. 



4. Mirabilis urbani Heimerl, Oesterr. Bot. Zeitschr. 56: 250. 1906. 



Type locality, "In Mexico australi ad San Salvador, 650 m. s. m." Type collected 

 by E. Langlasse in 1898 (no. 240). The locality is either in Michoacan or Guerrero. 

 Specimens examined: 



Michoacan or Guerrero: Campo Morado, June 14, 1899, Langlasse 1058. 



A plant closely related to M. jalapa but differing in the form of the involucre and 

 anthocarp, and in the smaller perianth and more abundant pubescence. 



5. Mirabilis jalapa L. Sp. PI. 177. 1753. 

 Jalapa congesta Moench, Meth. PI. 508. 1794. 

 Nyctago jalapae DC. & Lam. Fl. Franc. 3:426. 1805. 



Mirabilis planiflora Trautv. Bull. Sci. Acad. St. Petersb. 6: 216. 1840. 

 Mirabilis ambigua Trautv. Linnaea 1841: Litt.-Ber. 97. 1841. 

 Mirabilis pubescens Zipp.; Spanoghe, Linnaea 15: 342. 1841. 

 Mirabilis jalapa ambigua Choisy in DC. Prodr. 13 2 : 428. 1849. 

 Mirabilis jalapa planiflora Choisy, loc. cit. 



Mirabilis jalapa volcanica Standley, Contr. Nat. Herb. 12: 367. 1909. 

 Mirabilis jalapa gracilis Standley, loc. cit. 

 Mirabilis jalapa lindheimeri Standley, op. cit. 368. 

 Mirabilis jalapa ciliata Standley, loc. cit. 

 Type locality, "In India utraque." 

 Specimens examined: 



Coahuila: Saltillo, 1848, Gregg 344. 



San Luis Potosi: Region of San Luis Potosf, 1878, Parry & Palmer lib. 



Durango: Vicinity of Durango, 1896, Palmer 630 and 631. 



Mexico: Zocoalco pres Mexico, 1861, Bourgeau 617; Pedregal, Valley of Mexico, 



alt. 2,270 meters, August 19, 1896, Pringle 6433. 

 Yucatan: Gaumer 548. 



Oaxaca: Oaxaca Valley, alt. 1,530 meters, October 1, 1894, C. L. Smith 791; 

 Valley of Oaxaca, alt. 1,530 to 1,630 meters, September 20, 1894, Nelson 1314. 

 Nuevo Leon: Monterey, Edwards & Eaton. 

 Chiapas: Between San Richardo and Ocozucuantla, alt. 800 to 1,010 meters, 



August 18, 1895, Nelson 2987. 

 Vera Cruz: Orizaba, Botteri 582. 

 Tepic: Near Santa Teresa, August 8, 1897, Rose 2131. 

 Sinaloa: Waste ground, Mazatlan, March 31, 1910, Rose, Standley & Russell 



13767. 

 Panama: Gatun, March 4, 1905, Cowell 311. 

 Additional localities cited by Hemsley and by Heimerl: 

 Guatemala: Duenas, alt. 1,530 meters, Salvin. 

 Nicaragua: Realejo, Sinclair. 



Mexico: Bords de fossees pres de Mexico, Bourgeau 616; environs de Mexico, 

 Berlandier 521; Chapulco, Liebmann; Ehrenberg 169. 

 Mirabilis jalapa is an exceedingly variable species. There are noticeable differ- 

 ences in the form of the leaves, size of the perianth, and pubescence of stem, leaves, 

 and anthocarp, but the amount of variation is bo little that it seems hardly wise to 

 maintain any of the forms even as subspecies with perhaps the exception mentioned 

 below. Because of its frequency in cultivation the common four-o'clock has received 



