DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN. 261 



pubescent: style about equalling the two longer stamens: fruit 

 depressed-globose, 1.5 cm. in diameter in the dried state. 

 Vitex pyramidata Millsp. Field Col. Mus. Bot. Ser. i. 317 (1896), 

 not Rob. MEXICO. State of Yucatan: vicinity of Izamal, 

 March-April, 1895, Dr. Geo. F. Gaunter, no. 607, flowering speci- 

 men, (hb. Field Mus., and hb. Gray), type; near Izamal, coll. 

 of 1888, Dr. Geo. F. Gaunter, flowering specimen, without num- 

 ber (hb. Field Mus., and hb. Kew) ; vicinity of Merida, June, 

 1865, Dr. A. Schott, no. 582, fruiting specimen, (hb. Field Mus.). 

 The species here described is nearly related to V. pyramidata 

 Rob. with which it has been confused, but from which it differs 

 in being a tree instead of a shrub, in having longer petiolules 

 which, as well as the petioles themselves, are velvety pubes- 

 cent instead of pulverulent, in having a paler lower leaf-surface, 

 smaller flowers, in the absence of villous hairs at the base of the 

 anterior lip of the corolla on its upper surface, and finally in 

 having a more pubescent and somewhat more sharply dentate 

 calyx. Dr. George F. Gaumer in whose honor the above species 

 is named states that the plant here described is a tree growing 

 in the forests about Izamal, where it attains a height of about 

 15 meters. The flowers, moreover, are said by Dr. Gaumer to 

 be bright purple. The tree passes under the native Mayan 

 name of "Yaxnic." 



SCUTELLARIA AUREA Rob. & Greenm. Am. Journ. Sci. 1. 163 (1895). 

 Specimens well representing this species were collected on the 

 Cerro San Antonio, Oaxaca, Mexico, altitude 1,800 m., 28 Octo- 

 ber, 1906, C. Conzatti, no. 1583 (hb. Field Mus.). 



Var. Conzattii Greenman, var. nov. 



Stem erect or ascending: leaves petiolate, ovate to ovate- 

 lanceolate, 2 to 7 cm. long, i to 3 cm. broad, acuminate, acute, 

 entire; petioles 1.5 cm. or less in length: other characters as in 

 the species. MEXICO. State of Oaxaca: Cerro San Antonio, 

 altitude 1,800 m., 28 October, 1906, C. Conzatti, no. 1584 (hb. 

 Field Mus.) . The variety differs from typical forms of the species 

 in having smaller and perfectly entire leaves. 



Bacopa procumbens,* n. comb. Erinus procumbens Mill. Gard. 

 Diet. ed. 8, no. 6 (1768) & ed. 9, no. 13 (1797). Lindernia dian- 

 thera Sw. Prodr. Veg. Ind. Occ. 92 (1788) ; Mill. Gard. Diet. ed. 9, 

 no. 2 (1797); Willd. Sp. PL iii. 326 (1800). Herpestis chamce- 

 dryoides HBK. Nov. Gen. & Sp. ii. 369 (1817); Benth. in DC. 

 Prodr. x. 393 (1846) ; Gray, Syn. Fl. ii. part I. 280 (1878) ; Hemsl. 

 Biol. Cent. -Am. Bot. ii. 451 (1882). Microcarp&a americana 

 Spreng. Syst. i. 42 (1825). Monniera procumbens O. Kuntze, 

 Rev. Gen. PL ii. 463 (1891). Bacopa chamczdryoides Wettst. 



*The strict use of the earlier specific name requires the restoration of 

 Miller's procumbens for this well known plant which has long passed under the 

 name of H erpestis ckamaedryoi des HBK.; and in accordance with the Inter- 

 national Rules of Botanical Nomenclature, in adopting Bacopa of Aublet for 

 this group of plants, it becomes necessary to transfer the two species following. 



