322 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. 1^-2 inches long, subsessile by au abruptly narrowed base; 

 midrib prominent and white below ; bracts minute, grayish tomentose, 

 caducous; pedicels 1|— 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 (J 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 hypoGjEA, 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 (no. 

 4470). As Dr. Rose notes, this species is not to be distinguished 

 from A. polystachya, Jacq., represented by a rather wooden plate in 

 the Hortus Schonbrunensis. 



Liparis Galeottiana, Hemsl. This species, insufficiently char- 

 acterized by Richard and Galeotti, Ann. Sci. Nat., ser. 3, iii. 18, as 

 Malaxis 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 on 

 the Rio Blanco, Jalisco. Mr. Pringle has secured the same plant on 

 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 was 

 definitely identified with the species in question. Mr. Pringle's speci- 



