GREENMAN. — NEW ANGIOSPERMS FROM MEXICO. 87 



however, is more canescent, the heads somewhat smaller, and the calyx 

 and corolla shorter than in G. Pringhi. Moreover, the calyx-teeth iu 

 the S2:)ecies here proposed are not setaceous, but short and obtuse ; on 

 this character alone the two species can be readily separated. 



Lippia chrysantha. Shrub, 1. 5 to 2 m. high : stem much-branched, 

 covered with grayish bark ; ultimate branchlets hirsute-pubescent : 

 leaves short-petiolate, lanceolate to lance-oblong, 2.5 to 8 cm. long, 1 to 

 3 cm. broad, acute or obtuse, finely and evenly crenate-dentate, cuneate 

 or rounded at the base, rugose and hirsute-hispid above, soft-tomentose 

 beneath, often showing tendenc}' to become refiexed ; petioles 5 mm. or 

 less in length : inflorescence in axillary sessile crowded spikes, much 

 shorter than the leaves, pubescent with spreading hairs intermixed with 

 stipitate glands : floral bracts, lanceolate to somewhat oblanceolate, 6 to 7 

 mm. long, 2 to 2.5 mm. broad, acute : flowers solitary in the axils of the 

 bracts, short-pedicellate : calyx 1 mm. long, 2-fid, pubescent with long 

 pilose hairs ; divisions entire or minutely 2-deutate : corolla 5 to G mm. 

 long ; tube slender, externally pubescent, gradually expanded above into 

 a 4-lobed yellow or greenish-yellow limb : ovary and style glabrous. — 

 Mexico. State of Morelos : limestone hills near Yantepec, altitude 

 1385 m., 26 October, 1902, O. G. Pringle, no. 8679 (hb. Gr.). 



A species well characterized by the sessile short inflorescences dis- 

 posed in the axils of the upper leaves. Lippia Chrysantha is apparently 

 most nearly related to Lippia oaxacana, Rob. & Greenm. 



Stachys aristata. An herbaceous perennial : stem erect or ascend- 

 ing from a ligneous base, simple or branched, glabrous and more or less 

 purplish below, puberulent above : leaves petiolate, triangular-lanceolate, 

 1.5 to 6 cm. long, 0.5 to 2.5 cm. broad, serrate-dentate, conspicuously 

 aristate at the apex, cuneate to subcordate at the base and the lamina 

 decurrent on the 2)etiole, glabrous or slightly puberulent on both surfaces ; 

 petioles 0.5 to 4.5 cm. in length : verticillasters usually 6-flowered : calyx 

 narrowly campanulate, puberulent ; teeth subulate, nearly or quite equal- 

 ling the calyx-tube : corolla light purple or whitish tinged with purple, 

 somewhat maculate on the lower lip, about 1 cm. long, twice the length 

 of the calyx ; tube of the corolla projecting bej'ond the calyx ; upper lip 

 entire ; lower lip 3-lobed : nutlets obovate, glabrous or slightly pubes- 

 cent above. — Mexico. State of Jalisco : on river-ledges. Falls of 

 Guanacatlao, 6 August, 1902, C. G. Pringle^ no. 8623 (hb. Gr.). 



Stachys latipes. An erect or ascending herbaceous perennial : 

 stem simple or branched, 2 to 3 dm. high, i^ubescent with scattered 

 spreading stiff hairs : leaves oblong or slightly oblong-ovate, 1.5 to 3 



