S22 PROCEEDINGS OF THE AMERICAN ACADEMY. 
roots of Burseras. The stem is 3-4 lines in diameter and the inflo- 
rescence is 2-3 times as thick. The species appears to be distinguished 
from all other plants of the genus by its perfect flowers, as well as by 
its small and very acute scales. 
PEDILANTHUS PRINGLEI. Stems smooth, alternately few-branched: 
leaves closely and softly puberulent upon both surfaces, lanceolate, 
acuminate, 14-2 inches long, subsessile by an abruptly narrowed base; 
midrib prominent and white below; bracts minute, grayish tomentose, 
caducous ; pedicels 14-3 lines long: involucres acutish at the base, 
dark purplish red, 5 lines long; the upper lip quadri-glandular at 
the base inside, glabrous, abruptly bent, attenuate to a very narrow 
but truncate entire or slightly retuse apex; segments of the lower lip 
finely ciliated, otherwise glabrous; style slender, dark red, trifid; cap- 
sule smooth, 3-3} lines in length upon a stipe (3 inch long); seeds 
ashy, ovoid, apiculate. — Collected on limestone ledges, Las Palmas, 
San Luis Potosi, 25 July, 1891 (no. 5107). Near P. Tithymaloides, 
Poir., but with smaller puberulent leaves, darker colored involucre, 
acutish at the base and with a more slender and attenuate upper lobe. 
ACALYPHA HYPOGmA, Wats. (Proc. Am. Acad. xxii. 451), Has 
been rediscovered by Mr. Pringle on damp slopes near Guadalajara, 
28 July, 1893 (no. 4460). His specimens show the following addi- 
tional characters: stem hirsute, 4-6 inches in height: the largest 
leaves 15 lines in length: staminate spikes very small, 1-2} lines 
long, upon slender axillary often deflexed peduncles (a line in length). 
ACALYPHA PoLysTAcHYA, Jacq. A. filifera, Wats. (Proc. Am. 
Acad. xxii. 451), has been again found by Mr. Pringle in Jalisco (00 
4470). As Dr. Rose notes, this species is not to be distinguished 
from A. polystachya, Jacq., represented by a rather wooden plate 0 
the Hortus Schénbrunensis. 
Lrparis GaLeotTiana, Hemsl. This species, insufficiently char- 
acterized by Richard and Galeotti, Ann. Sci. Nat., ser. 3, iii. 18, 48 
alaxis Galeottiana, was transferred to Liparis by Mr. Hemsley, 
Gard. Chron. 1879, i. 559. No exact occurrence of the plant in Mexico 
was known until Dr. Watson, Proc. Am. Acad. xxii. 454, doubtfully 
identified with the description a specimen collected by Dr. Palmer 0? 
the Rio Blanco, Jalisco. Mr. Pringle has secured the same plant 0” 
the Sierre Madre, Chihuahua, 30 September, 1887 (no. 1527), and on 
moist slopes, Patzcuaro, 18 July, 1892 (no. 5274), and finally on dry 
granitic hills near Guadalajara, 17 August, 1893 (no. 4512). A por 
tion of the last mentioned specimen, was sent to Kew, where it des 
‘definitely identified with the species in question. Mr. Pringle’s spe" 
