STANDLEY— ALLIONIACEAE OF MEXICO. 409 



22. Allionia foliosa Standley, Bp. nov. 



Sterna slender, glabrous, 30 to 40 cm. high, branched at the base and sparingly 

 above; leaves numerous, the internodes very short; blades thin, glabrous, ovate or 

 lance-ovate, 40 to 60 mm. long and 18 to 30 mm. wide, rounded at the base, acute; petioles 

 slender, 5 to 12 mm.long; inflorescence cymose with butfew branches, these finely viscid- 

 puberulent and furnished with numerous viscid, much reduced, bract-like leaves; 

 involucres few, usually 1-flowered, conspicuously villous and ciliate when young, but 

 becoming almost glabrous, the lobes ovate, acute, the whole 6 to 11 mm. high, on 

 pedicels 4 to 6 mm. long; fruit 6 mm. long, finely puberulous, with broad and smooth 



ribs. 



Type in the IT. S. National Herbarium, no. 229205, collected by E. W. Nelson 

 between San Geronimo and La Venta, Oaxaca, altitude about 60 meters, July 13, 

 1895 (no. 2787). The plants suggest some of the forms that have passed as Allionia 

 floribunda, but their inflorescence is very different; they are related to A. latifolia, 

 but differ decidedly in the form of the leaves and involucres. * 



23. Allionia melanotricha Standley, Contr. Nat. Herb. 12: 351. 1909. 

 Mirabilis nyctaginea alpicola Heimerl, Jahresb. Oberrealsch. Funfhaus 23: repr. 



23. 1897. 

 Mirabilis nyctaginea cervantesii Heimerl, loc. cit., as to material, not A. cervantesii 



Steud. 

 Oxybaphus melanotrichus Weatherby, Proc. Amer. Acad. 45: 425. 1910. 

 Type locality, " Barfoot Park, in the Chiricahua Mountains, Arizona." Type col- 

 lected by J. C. Blumor, 1907 (no. 1385). 



Specimens examined: 



Sonora: San Jos6 Mountains, August 3, 1893, Mearns 1586. 

 Chihuahua: Near Colonia Garcia in the Sierra Madre, August 3, 1899, Town- 

 send & Barber 244; near Colonia Garcia, August, 1899, Nelson 6177; mountains 

 near Pilares, September 23, 1891, Hurtman 743; Soldier Canyon, Sierra Madre, 

 alt. 2,000 meters, September 16, 1903, Jones. 

 Coahuila. or Nuevo Leon: 1880, Palmer 1111. 

 Durango: Vicinity of Durango, 1896, 1'almer 261. 

 Allionia melanotricha is one of the most variable species of the genua. The leaves 

 vary in outline from ovate-cordate to lance-oblong and cuneate at the base; the black 

 hairs of the involucre, so characteristic in some parts of the range, are often lacking 

 in specimens from other regions. 



OTHER SPECIES REPORTED FROM MEXICO. 



Allionia cervantesii (Sweet) Steud. Norn. Bot. ed. 2. 1: 50. 1840. 



More than once this species has been cited from Mexico and even from the United 

 States A lar^e part of the material thus referred to is Allionia melanotricha; some, 

 especially that from Mexico, is referable to other species. Sweet based his species 

 upon cultivated plants grown from South American seed. Doctor Heimerl cites a 

 specimen collected by Ehrenberg at "Mini, del Monte bei Huasoa" as belonging to 

 this species. The writer has seen no Mexican material that can be placed here. 



Allionia ovata (Ruiz & Pav.) Standley. 



Calyxhymenia ovata Ruiz & Pav. Fl. Peruv. Chil. 1: 45. pi. 75. f. b. 1798. 



Oxybaphus ovatus Vahl, Enum. PI. 2: 41. 1806. 



Allionia ovata Pursh is a very different plant, while it is long antedated by the name 

 of Ruiz and Pavon. The proper combination under Allionia seems never to have 



been made. . , 



Questioning^ referred to Mexico by Choky, but we have seen no specimens from 

 North America. The species is South American. 



