ROSE—-MEXICAN AND CENTRAL AMERICAN PLANTS. 265 
Pilostyles thurberi A. Gray, Mem. Am. Acad. I. 5: 326. 1854. Pirate XXI. 
Host Parosela emoryi (A. Gray) Heller. 
EXPLANATION OF PLATE XXI.—Plant of Parosela schottit bearing numerous individuals. Fig. 1, 
longitudinal section of branch showing mode of attachment of the parasite; 2, a fertile flower; 3, 
transverse section of flower; 4; longitudinal section of the same; 5, an ovule detached, highly magni- 
fied. Reproduction of plate 52, Torrey, Botany of the United States and Mexican Boundary Survey. 
RANUNCULACEAE. 
A NEW AQUILEGIA FROM THE HIGH MOUNTAINS. 
Aquilegia madrensis Rose, sp. nov. 
Stems 1 to 1.2 meters high, much branched above, pubescent becoming glabrate 
below; basal leaves long-petioled, triternate; leaflets usually on slender petioles, 2.5 
em. or less long, sometimes sessile, cuneate at base, irregularly cut or lobed, pale 
green above, much paler beneath, pubescent; flowers nodding; sepals broadly ovate, 
acuminate, 15 to 18 mm. long, puberulent; petals with a greenish rounded limb, the 
spur 4.cem. long, very much contracted below the middle, pale red in color; carpels 
5, strongly nerved. 
Collected by J. N. Rose and E, A. Goldman on the Sierra Madre west of Bolafios, 
September 15 to 17, 1897 (no. 2954). 
Type U.S. National Herbarium no. 301908. 
The species while near Aquilegia skinneri must be distinct, judging from the descrip- 
tions and colored figure of that species. The plant is taller and not glabrous like A. 
skinneri, the sepals broader, the leaf segments different, while the flowers are paler. 
Aquilegia skinner is a Guatemala species and is perhaps restricted to that country. 
The Mexican specimens labeled A. skinneri which T have seen seem best referable to 
this species. These are Dr. EK. Palmer's no. 336 from Chihuahua, collected in 1885, 
and Dr. Pringle’s no. 1182 from the same State, collected in 1887. 
CAPPARIDACEAE. 
THE MEXICAN SPECIES OF WISLIZENIA. 
Dr. E. L. Greene has published in the Proceedings of the Biological 
Society of Washington“ a revision of the genus Wislizenia. Of the 
ten species enumerated by him five are attributed to Mexico, while 
two or three of the others may be looked for on the Mexican side of 
the border. Of the new species distributed three were collected by the 
writer in Mexico. Of my collections Dr. Greene has this to say in 
his preface: 
“While pursuing this line of research, Mr. J. N. Rose pleasantly 
surprised me by bringing forth a series of species of his own gather- 
ing in Sonora and Lower California, upon which he had undertaken a 
critical study long since, which study had been interrupted, and these, 
together with the manuscript on them, he generously submitted to 
me, as an aid to this general revision, His own Sonoran species, 
both of them well marked in character, conclude the subjoined list of 
species, nm »stly new.” 
Wislizenia pacalis Gireene, Proc. Biol. Soc. Wash. 19: 131. 1906. 
“Branches stout, often tortuous or flexuous, not quite glabrous, red-dotted, or 
purplish; leaflets always 3, oblong, usually very obtuse or even retuse or emarginate, 
a Volume 19, pp. 127-182. 
