258 FIELD COLUMBIAN MUSEUM BOTANY, VOL. II. 



Ipomoea Conzattii Greenman, sp. nov. 



Stem ligneous, covered with a gray bark and dotted with 

 numerous lenticels; ultimate branches pubescent; leaves not 

 seen: inflorescence in axillary sessile, or short-pedunculate 

 i -several-flowered (i-i6).more or less nodding sericeous-hirsute 

 cymes; bracts triangular-acuminate, acute, caducous; pedicels 

 i to 2 cm. long, upwardly thickened, striate, pubescent: calyx 

 about 7 mm. high; sepals ovate-rotund to broadly ovate, 5 to 

 7 mm. long, nearly or quite as broad, rounded or slightly emar- 

 ginate and submucronate at the apex, the outermost densely 

 sericeous-hirsute on the outer surface, the inner slightly pubes- 

 cent to glabrous externally, scarious-margined and often tinged 

 with purple: corolla tubular-campanulate, 3.5 to 4.5 cm. long, 

 externally glabrous; tube subcylindrical 2.5 to 3 cm. long, more 

 or less abruptly expanded into the 5-lobed limb, purple or some- 

 what magenta-colored in the dried state: stamens included or 

 barely exserted; filaments bearing a tuft of coarse hairs at their 

 insertion near the base of the corolla : style more or less persistent : 

 capsule subglobose, about i cm. in diameter, smooth and gla- 

 brous; seeds 2 in each cell, oblong-ovate, 9 mm. long, bearing 

 from its apex a reflexed coma somewhat exceeding the body of 

 the seed. MEXICO. State of Oaxaca: Almoloyas, altitude 

 800 m., 25 December, 1906, C. Conzatti, no. 1666 (hb. Field Mus.). 

 It is with some hesitation that the writer describes a leafless 

 plant as new to science, but the present one is so distinctive 

 in its ligneous stem, inflorescence and floral characters that it 

 seems best to present the above characterization. The species 

 is named in honor of the distinguished botanist, Professor 

 Cassiano Conzatti, Director of the Normal School in the City of 

 Oaxaca, Mexico. 



IPOMOEA TENTACULIFERA Greenm. Proc. Am. Acad. xxxiii. 482 (1898). 

 Specimens collected on the Cerro San Felipe, Oaxaca, Mexico, 

 altitude 1,700 m., 12 August, 1906, C. Conzatti, no. 1618 (hb. 

 Field Mus.), match perfectly the original material secured by 

 Mr. C. G. Pringle in Tomellin Canon in 1897. Professor Conzatti's 

 specimens in addition to perfect flowers show well developed 

 fruit. The capsules are spherical-ovate, nearly or quite 1.5 

 cm. high, fully i cm. in diameter, smooth and glabrous with a 

 single well developed seed in each cell. 



Stachytarpheta purpurea Greenman, sp. nov. 



Suffruticose : stems terete or slightly 4-angled, hirsute-pubes- 

 cent: leaves opposite, rhombic-ovate, 2 to 5 cm. long, i to 2.4 

 cm. broad, rounded or acute at the apex, crenate-serrate, rather 

 abruptly contracted below the' middle to an entire base, hirsute- 

 hispid and more or less rugose above, slightly paler and more 

 densely hirsute beneath: inflorescence terminating the stem 

 and branches in slender elongated spikes, 2 to 2.5 dm. or less 

 in length ; rhachis sparingly pubescent, 2 mm. or less in diameter; 

 floral bracts rather remote, ovate, abruptly acuminate, 4 to 5 mm. 



