476 PROCEEDINGS OF THE AMERICAN ACADEMY. 
Epmpenprum ELEGANS, Rehb. f. in Walp. Ann. vi. 374. Barkeria 
elegans, Kuowles & Wescott, Fl. Cab. ii. 7, t. 49. This rare and beauti- 
ful orchid has been rediscovered by Mr. Pringle on limestone ledges near 
Tehuacan, altitude 1540 m., 31 July, 1897, no. 6769. 
The species is readily recognized by its upright leafy stem, terminal 
racemose inflorescence, long bracteate-sheathed peduncle, and finally by 
the beautiful lilac-purple flowers (3-5 em. broad), and the oblong usually 
undivided lip, which is adnate to the base of the column for one fourth 
the length of the latter organ. 
CELTIS monorca, Hemsl. Biol. Cent.-Am. Bot. iii. 139, v. t. 77. 
Excellent fruiting specimens of this species were collected by Mr. E. W- 
Nelson on Maria Madre Island of the Tres Marias group of islands, 3-26 
May, 1897, no. 4236. The leaves in Mr. Nelson’s specimens are more 
distinctly serrate than in the type, but they have exactly the same nae 
line, venation, and pubescence. The following description of the fruiting 
characters may be appended: — pedicels axillary, solitary, ascending oF 
erect, 1 cm. or less in length, appressed-puberulent: mature fruit oblong- 
ovate, 10 to 12 mm. long, 6 to 8 mm. thick, subtriangular, glabrous: the 
undivided styles persistent. 
The above species is readily recognized on account of the distinctly 
pinnate venation of the leaves, while in most of the species of the genus 
the leaves are 3-nerved from the base. : 
Pouzolzia Pringlei. Shrub: stems and branches covered witha 
grayish brown bark, dotted with scattered lenticels ; the branchlets pubes- 
cent: leaves oblong-ovate or elliptic-ovate, 1.5 to 4 cm. long, 10 to 18 
mm. broad, obtuse or acute, entire, ciliate, 3-nerved from the cuneate or 
rounded base, pubescent above, densely white-tomentose beneath ; petioles 
pubescent, 3 to 10 mm. long; stipules triangular-acuminate, about 3 mm- 
long, ciliate, 1-nerved, pubescent on the outer or lower surface: — 
moneecious, disposed in dense axillary clusters: staminate flowers, = 
merous: the short bidentate perianth of the fertile flowers much exceed 
by the long prominent style; fruiting perianth ovate, pas naeenen eat 
about 2 mm. long, pubescent, somewhat tuberculate-winged, pamene 
enclosing the ovate acute smooth white shining akene. — Collected by 
C. G. Pringle in Tomellin Cafion, altitude 1230 m., 9 July, 1897, 1% 
6736. oe iad 
A species somewhat resembling P. nivea, Watson, but with oblong 
leaves and shorter stipules. : 
Ruprechtia Pringlei. Shrub or small tree 4 to 6 m. high: stems 
and branches terete, smooth, covered with a grayish bark: leaves oblong- 
