ROSE—-MEXICAN AND CENTRAL AMERICAN PLANTS. 25 
3. Argemone ochroleuca Sweet, Brit. Fl. Gard. 3: pl. 242, 1828. 
Argemone mexicana ochroleuea Lindl. Bot. Reg. 16: pl. 1843, 1830. 
This species is common all down the west coast of Mexico, and was the only species 
of the genus seen by the writer south of Guaymas. In the interior it was seen from 
Chihuahua City to Oaxaca City and it is the most common argemony of Mexico. It 
is usually seen about houses and towns growing in waste places. The flowers are 
always a very pale lemon yellow. The fresh flowers sometimes appear nearly white, 
but the yellow color comes out more strongly in drying. 
Prain, in his monograph of this genus, keeps ochroleuca as a variety of mericana, 
although with some misgivings. It seems to the writer that the two forms should 
be kept distinet, for besides the differences cited by Prain our own material of 
ochroleuca shows somewhat thicker leaves, with stouter, more spinescent teeth. The 
color of the flowers is pale lemon, while that of mexicana is always orange yellow, 
Type locality: Original description drawn from specimens grown from Mexican 
seed. 
The following specimens have been collected by J. N. Rose: 
Sonora: Between Nogales and Guaymas, June 4, 1897 (no. 1297); near Guaymas, 
June 5 to 11, 1897 (no. 1252). 
Tepic: Near Acaponeta, July 30, 1897 (no, 8286). 
Chihuahua: Near Chihuahua City, May 11, 1899 (no. 4207). 
Federal District: Hill near Guadalupe, Valley of Mexico, June 10, 1899 (no, 4542), 
4. Argemone grandiflora Sweet, Brit. Fl. Gard. 3: pl. 226. 1827. 
Stems with very few prickles and glaucous; leaves somewhat prickly on the 
margins and midrib. Sepals 3, broadly ovate, tapering into a long acumination 
tipped with a weak prickle; flowers white, 10 cm. broad; stamens numerous, ye llow; 
ovary blush, slightly prickly; style short but evident. 
Collected by Rose and Hough at ¢ ‘ardenas, San Luis Potosi, July 15, 1899 (No. 
4884) and seen fora stretch of perhaps 50 miles between this place and the city of 
San Luis Potosi. 
This must be the true A. grandiflora, now common in gardens, but according to Dr. 
Prain, represented in herbaria by only a single specimen in the Paris herbarium, 
collected by Ghiesbrecht in the State of Oaxaca. 
Besides several good herbarium specimens, a small quantity of seed was obtained. 
The above description is drawn from my own specimens, which seem to accord with 
the illustrations in the Botanical Register¢ and the Botanical Magazine.’ This 
species was introduced into cultivation in 1827, 
5. Argemone sanguinea Greene, Pittonia 4: 68. 1899. 
Argemone mexicana rosea Greene, loc. cit. as syn. 
Argemone platyceras rosea Coulter, Contr. Nat. Herb, 1: 380. 1890, not A, rosea Tlook. 
183 
Stems slender, very prickly and glaucous, leaves pale, pinnately lobed; the lobes 
with broad spiny-tipped teeth, flowers on short peduncles, pinkish to deep purple, 
6 to 10 em. broad; sepals broad, 18 mm. long, tipped with a long spine; fruit linear- 
oblong, 3 to 5em. long; style almost wanting. 
Type locality: ‘Corpus Christi, Texas,”’ collected by G. C. Nealley. 
Specimens eramined . 
Texas: Eagle Pass, V. Havard, April, 1883; same station, C. G, Pringle, 1900 
(no. 8277). 
Coahuila: Saltillo, Dr. Palmer, 1880 (no. 20) and 1898 (no, 325), and near Parra 
1898 (no. 442). 
ap L 1264, PPL. 307: 
