I *9 1# ] Composite? from Guatemala. 99 



* 



in a rather small open cymose panicle : involucral bracts ovate, 

 acute or cuspidate, ciliate on the margins, sparingly so on the 

 back : corolla-lobes of sterile flofvers with scanty pubescence 

 if any: achenes obovate, conspicuously pilose at apex.- 

 Guatemala, Depart. Guatemala, alt. 5000 feet, Feb., 1890 

 (y. D. S. 2347). This species is near C\ Surinamense L., var. 

 asperum Baker,, but it differs in its comparatively smooth 

 corolla-lobes of the sterile flowers, and strikingly in its large 

 broad leaves, velvety pubescent beneath, and long petioles. 

 From C. arboreum Donnell Smith it differs in its involucral 

 bracts, leaves, and villous achenes. 



MONTANOA OVALIFOLIA DC. is worthy of mention as being 

 a plant reported before only from Bogota. These specimens 

 are from Pacaya, Depart. Amatitlan, alt. 6000 feet, March, 



1890 (y. D. S. 2352). 



Tetragonotheca (Tiiatenialcnsis n. sp. —Apparently closely 

 allied to T. Texana Gray and Kngelm. ; but the leaves are del- 

 toid, with mucronate serrulations and usually one or two 

 prominent basal teeth, abruptly decurrent into a winged 

 petiole which does not enlarge or clasp at base; leaves of the 

 inflorescence ovate-lanceolate to lanceolate, acuminate, taper- 

 ing gradually to a petiole : corolla-tubes, both of the ray and 

 disk-flowers, very long and slender, more or less glandular 

 pubescent, as is the whole inflorescence : pappus none in our 

 specimens.-^ Senahii, Depart. Alta Verapaz, alt. 3500 feet, 



April, 1889 rj. /;. \. 1592). A remarkable Tetragonotkeca on 



account of its long and slender corolla tubes, the showy yellow 

 Iigules looking conspicuously slender-clawed. 



Zexmenia Duhis n. sp. — Pubescent and branching: leaves 

 thickish, opposite, short-petiolcd, ovate or oblong, acute, 

 distantly mucronate-serrate, scabrous on both sides but very 

 much more so above, *> to 9 cm. long, 8.5 to 5 cm. broad : 

 heads on rather long peduncles (2.5 to 5 cm.), about 1<> mm. 

 high : involucral bracts lanceolate to ovate, mostly acute, 

 scabrous with rough hairs : bracts of the receptacle winged on 

 the back, with a sharply acute or acuminate minutely toothed 

 apex : achenes of the ray 3-angled and 3-awned; those of the 

 disk broadly winged, with usually two prominent unequal 

 awns and numerous small squamellae. -^ Rio Dulce, Depart. 

 Livingston, alt. feet, March, 1889 7. D. S. 1607), Resem- 

 bling Z. scandens HemsL somewhat, but differs from that 



-pedes in its acute leaves, Iong-peduncled and smaller heads, 



