DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN. 263 



ing hairs: leaves petiolate, lanceolate to elliptic-lanceolate, 

 occasionally ovate, 5 to 12 cm. long, i to 5 cm. broad, acuminate, 

 acute, entire, gradually narrowed below to a 2 - lo-mm. long 

 petiole, pubescent on both surfaces more densely so beneath; 

 interpetiolar stipules i to 4 mm. high, abruptly apiculate-acumi- 

 nate or occasionally bidentate: inflorescence in spherical sessile 

 or subsessile axillary pubescent heads: flowers numerous, united 

 to the inconspicuous truncate calyx-limb: corolla tubular or 

 tubular- funnel-form, about 7 mm. long, rather deeply 5-lobed, 

 pubescent on the outer surface, glabrous in the lower portion of 

 the tube within, pubescent above: stamens and style of two 

 lengths, reciprocally exserted or included : fruit somewhat succu- 

 lent, spherical, about 1.5 cm. in diameter; pyrenae obliquely 

 oblong-obovate, 6 mm. long, 3 to 4 mm. broad, smooth or nearly 

 so. M. Roioc Millsp. Field Col. Mus. Bot. Ser. i. 321 (1896) & in 

 Engl. Bot. Jahrb. xxxvi. Beibl. 80: 28 (1905), not L. M. Royoc 

 Millsp. Field Col. Mus. Bot. Ser. 1. c. 392 (1898), not L. MEXICO. 

 State of Yucatan: Nojcacab, 21 November, 1865, Dr. A. Sckott, 

 no. 709 (hb. Field Mus.) ; in brush lands about Izamal, collection 

 of 1895, Dr. Geo. F. Gaumer, no. 362 (hb. Field Mus., and hb. 

 Gray), type; near Merida, Sr. Porfirio Valdez, no. 67 (hb. Field 

 Mus.); Chichankanab, Dr. Geo. F. Gaumer, no. 1700 (hb. Field 

 Mus.); Chichen Itza\ 28 January to 10 February, 1901, E. A. 

 Goldman, no. 547 (hb. U. S. Nat. Mus., and hb. Field Mus.) ; Titas, 

 17 March, 1903, C. & E. Seler, no. 3971 (hb. Field Mus.) ; in forests 

 near Xkombec, 5 April, 1903, C. & E. Seler, no 4032 (hb. Field 

 Mus.); near Izamal, 22 February, 1906, /. M. Greenman, nos. 

 421, 471 (hb. Field Mus.). 



This species has been referred hitherto to M. Royoc L., but 

 it may be readily separated by the persistent pubescence over 

 the entire plant, the sessile or subsessile inflorescence and fruit 

 slightly shorter corolla, somewhat more complete union of the 

 flowers, and by the slightly longer and more oblique pyrenae. 

 The plant is known in Yucatan under the Mayan name of "Joyoc" 

 (Hoyoc). 



CRUSEA VIOLACEA A. Brongn., ace. to Neumann, in Rev. Hortic. 

 Ser. II. iv. 368 (1846); v. 61, pi. 30, fig. 4 (1846). 



The following specimens agree in every essential detail with 

 the descriptions and illustration of the above little-known 

 species, and for the present at least they seem best placed here. 

 MEXICO-. State of Vera Cruz: Teocelo, 8 May, 1901, E. A. 

 Goldman, no. 685 (hb. Field Mus., and hb. U. S. Nat. Mus.); 

 meadows, Orizaba, May, 1905, C. A. Pur pus, no. 447 (hb. Field 

 Mus.), distributed as " Spermacoce rubra Ch. & Schl."; along 

 the railroad near Cordoba, 25 January, 1906, /. M. Greenman, 

 nos. 188, 209 (hb. Field Mus.); railroad banks near Jalapa, 

 C. R. Barnes, C. J. Chamberlain & W. J. G. Land, no. 16 (hb. 

 Field Mus., and hb. University of Chicago). 



Professor William Trelease has kindly furnished me with a copy 



