152 PROCEEDINGS OP THE AMERICAN ACADEMY 



Dr. King forms his section Palceomorphe, based upon this characteristic 

 mark. 



Ficus FASCiCULATA, Watson, Proc. Am. Acad. 24. 78. This spe- 

 cies was described from specimens in quite young fruit, found in 

 cultivation at Guavmas, but said to be native in the same region. A 

 very similar, if n(jt the same, species has been recently found by Mr. 

 Pringle (n. 3554) in Tamaso[)o Canon in the mountains of San Luis 

 Potosi, and this appears to be identical with what was collected by 

 Ervendberg (n. 332) near Tantoyuca in Huasteca, and by Botteri still 

 farther southward in Orizaba. The leaves, however, vary considera- 

 bly in size, and from obtuse to quite sharply acuminate, and the only 

 specimen seen by Mr. Pringle was a small erect shrub very different 

 in habit from those at Guaymas as described bj^ Dr. Palmer. The 

 orifice of the small thin fruit is in the Guaymas specimens much im- 

 pressed, while in the others it is conspicuously prominent, which may 

 be due to the stage of growth. All may possibly be referrible to 

 F. sapida, Miquel, of Costa Rica and Panama, as forms of one poly- 

 morphous species. 



PiLEA GLABRA. Low and hcrbaccous, glabrous : leaves thin, 

 showing on the upper side numerous linear cystoliths, entire, lanceo- 

 late or broadest near the middle and narrowed each way, acutely 

 acuminate, rounded at the very base, 3-nerved, the nerves continued 

 to the apex, 2 to 4 inches long by 8 to 16 lines broad, on petioles an 

 inch long: panicles pedunculate, very loose and slender, exceeding 

 the petioles, solitary or in pairs in the axils, androgynous. — In 

 Tamasopo Canon, San Luis Potosi; August, 1890 (n. 3550). 



Myriocarpa brachystachys. Young branches, petioles and 

 lower surface of the leaves densely tomentose : leaves ovate, rounded 

 at base, short-acuminate, acutely serrate, finely bullate, ^nearly gla- 

 brous above, 3 or 4 inches long, on petioles ^ inch long : pistillate 

 inflorescence sparingly branched, nearly sessile, the longer spikes 3 

 to 5 inches long, very densely flowered : sepals lanceolate, sparingly 

 <:iliate, a third as long as the sparsely hispid ovary. — In the bar- 

 ranca near Guadalajara; IMay, 1888 (n. 3024). 



JuGLANS Mexicana. Foliage as in ./. nigra, but with the pubes- 

 cence nearly of,/, cinerea: fruit large, subcompressed-globose, 2^ 

 inches high by 2 inches broad ; nut H inches broad, very obtusely 

 rugose, obtuse or slightly apiculate. — On hills at San Josi^- Pass, San 

 Luis Potosi; Octol)er, 1890 (n. 3322). 



Michostylis (Dienia) tenuis. Stem slender fiom a small tu- 

 berous base, 4 to 6 inches high, with a single narrowly ovate acutish 



