DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN. 257 



In leaf-outline and in the pubescence of the leaf the species 

 here proposed suggests /. yucatanensis Briquet in Ann. Conserv. 

 & Jard. Bot. Geneve, iv. 230 (1900), but it differs in having 

 larger leaves which are abruptly caudate-acuminate and termi- 

 nated by a very slender acumen, shorter peduncles, essentially 

 glabrous inflorescence, deltoid bracts, sessile flowers, and 8 

 instead of 10 stamens. 



The plant grows as a rather profusely branching tree with 

 thick and somewhat fleshy branches and twigs. The almost 

 leafless condition of the tree and its light gray appearance render 

 it a conspicuous feature of the "scrub" and woodlands about 

 the City of Izamal. It passes under the Mayan name of " Pom- 

 olche;" and its stems are said to be used by the native people in 

 making the so-called "Chul" or whistles. 



Gouania Conzattii Greenman, sp. nov. 



Stem terete or slightly angulate above, sparingly pubescent; 

 leaves alternate, petiolate, ovate or subrotund-ovate, rounded to 

 short-acuminate and submucronate-acute at the apex, crenate- 

 dentate, shallowly cordate at the base, dark green and hirsute- 

 pubescent above in the younger stages, more or less glabrate, 

 subtomentose beneath ; midrib and veins prominent on the under 

 side of the leaf; petioles i cm. or less in length: inflorescence 

 terminating the stem and upper branches in spicate racemes 

 together forming a more or less leafy panicle: flowers sessile, 

 or on very short pedicels: calyx-limb 5-lobed; lobes triangular- 

 ovate, acute, entire, externally as well as the entire inflorescence 

 tawny-pubescent; disk distinctly 5-lobed and the lobes about 

 one-half as long as the lobes of the calyx, 2-dentate and more 

 or less persistent: petals strongly cucullate, i mm. long: mature 

 capsules triangular, 6 to 7 mm. high, including the strongly 

 developed wings 7 to 9 mm. in diameter, glabrous or nearly so; 

 seeds oval, 3 to 4 mm. long, smooth and shining, convex on the 

 outer surface, 2-faced and more or less 2-scalloped on the inner 

 surface. MEXICO. State of Oaxaca: Cerro San Felipe, altitude 

 1,700 m., 15 September, 1906, C. Conzatti, no. 1567 (hb. Field 

 Mus.). Habitally and in leaf-outline G. Conzattii resembles G. 

 tomentosa Jacq., but differs in having a sparingly pubescent 

 stem, larger flowers, and also in bearing capsules which are 

 nearly twice as long in the vertical axis, and producing seeds 

 which are fully twice larger than G. tomentosa. 



MACROSCEPIS OBOVATA HBK. Nov. Gen. & Sp. iii. 201, t. 233 (1818); 

 DC. Prodr. viii. 599 (1844); Hemsl. Biol. Cent. -Am. Bot. ii. 

 320 (1881). 



Specimens agreeing in all details with the original description 

 and illustration of this species were collected at Izamal, Yucatan, 

 by Dr. Geo. F. Gaunter, no. 1198 (hb. Field Mus.), and again 

 at Chichankanab by the same collector, no. 2239 (hb. Field Mus.). 

 This species has not been recorded hitherto from Yucatan. 



