GREENMAN. — NEW ANGIOSPERMS FROM MEXICO. 87 
however, is more canescent, the heads somewhat smaller, and the calyx 
and corolla shorter than in O. Pringlet. Moreover, the calyx-teeth in 
the species 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 2m. 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 em. 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 tendency to become reflexed ; 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-dentate: corolla 5 to 6 mm. 
long; tube slender, externally pubescent, gradually expanded above into 
4 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 Ohrysantha is apparently 
Most nearly related to Lippia oaracana, 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 em. long, 0.5 to 2.5 em. broad, serrate-dentate, conspicuously 
aristate at the apex, cuneate to subcordate at the base and the lamina 
decurrent on the petiole, glabrous or slightly puberulent on both surfaces ; 
petioles 0.5 to 4.5 em. in length : verticillasters usually 6-flowered : calyx 
harrowly 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 beyond 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 
Guanacatlan, 6 August, 1902, OC. G. Pringle, no. 8623 (hb. Gr.). oa 
Stachys latipes. An erect or ascending herbaceous os 
stem simple or branched, 2 to 3 dm. high, pubescent with — : 
spreading stiff hairs: leaves oblong or slightly oblong-ovate, 1.9 to 
