96 PROCEEDINGS OF THE AMERICAN ACADEMY. 
clasping rather than decurrent leaves, the less lanate-tomentose nature of 
the under leaf-surface, the more glandular character of stem and foliage, 
and finally by the chartaceous, essentially white involucral scales. 
Gnaphalium crenatum. Stem herbaceous, erect, 3 to 4 dm. high, 
branching from the base, leafy throughout, terete, white-tomentose with 
glandular-hirtellous hairs intermixed : leaves sessile, semiamplexicaul and 
often somewhat decurrent, spatulate to linear-lanceolate, 2.6 to 5 cm. 
long, 2 to 5 mm. broad, acute or mucronate-acute, more or less arachnoid 
and densely glandular-hirtellous above, lanate-tomentose beneath ; mar- 
gins revolute and mostly crenate: inflorescence a terminal corymbose 
cyme: heads about 5 mm. high, disposed in rather dense glomerules: 
involucre pale-stramineous, 4—5-seriate ; scales of the involucre lanceolate, 
tomentose at the base and greenish along the median line, the outer 
acuminate, acute, the inner obtusish.— Mexico, State of Jalisco: near 
Guadalajara, C. G. Pringle, no. 9524 (hb. Gr.). 
The affinity of this species is apparently with G. gracile, and G. 
stramineum, HB 
Gnaphalium SaVisneecie Lanate-tomentose or densely arachnoid 
throughout: stem 5 to 7 dm. high, branched from near the base; 
branches arcuate-ascending, slender, usually simple: leaves narrowly 
oblanceolate to lance-attenuate, 3 to 8 cm. long, 2 to 8 mm. broad, acute, 
entire, commonly revolute-margined, short-decurrent : heads about 7 mm. 
high, disposed in few- to several-headed glomerules at the tip of stem and 
branches : involucre campanulate at least in the dried state; scales of 
the involucre white, narrowly ovate to elliptic-oblong, 3 to 5 mm. long, 
1 to 2 mm. broad, acute or submucronate: flowers numerous: perfect 
flowers 20 to 30.— Mexico. State of Jalisco: Guadalajara, July, 1886, 
Dr. Edward Palmer, no. 256 (hb. Gr.); gravelly soil near Guadalajara, 
9 August, 1902, C. G. Pringle, no. 8628 (hb. Gr.). 
Dr. Palmer’s plant here cited was placed by the late Dr. Sereno Wat- 
son with Gnaphalium semiamplexicaule, DC., but with that species it 
has little in common. G. jaliscense differs from G. semiamplexicaule in 
having decurrent rather than half-clasping leaves, in having larger and 
more numerously flowered heads; and the scales of the involucre are 
more pointed and more numerously seriate. 
Gnaphalium oaxacanum. Stem and ‘aches densely white 
lanate-tomentose: basal leaves not seen: stem-leaves sessile, shortly de- 
revolute-margined, arachnoid-tomentose above, densely white lanate-to- 
_ mentose beneath, in the later stages becoming more or less recurved: 
