GREENMAN, — NEW ANGIOSPERMS FROM MEXICO. 117 
guished by the presence of the pappus, and the short corolla-lobes; and 
from the latter by the glandular pubescence throughout instead of being 
densely hirtellous on stem and leaves with only a few glandular hairs 
above in the inflorescence. 
Tagetes Nelsonii. Stem striate, purplish, glabrous: leaves oppo- 
site, petiolate, pinnatisect; divisions 3 to 7, elliptic-lanceolate, 1 to 6 em. 
long, 0.5 to 2 cm. broad, acute, sharply and evenly dentate, each tooth 
bearing a single gland, dark green above, paler beneath, glabrous or 
slightly puberulent on the upper surface, distinctly crisp-puberulent on 
the lower surface, evenly glandular-punctate: inflorescence a terminal 
many-headed corymbose cyme: heads about 1 em. high, radiate: invo- 
lucre cylindrical, 5—7-dentate, numerously punctate with oblong-elliptic 
glands: ray-flowers usually 5, occasionally 6; tube slender, nearly 
equalling the oblong 0.5 cm. long lamina: disk-flowers 9 to 12: pappus 
of short, unequal scales: achenes 4 to 5 mm. long, glabrous. — Mexico. 
State of Chiapas: near Tumbala, altitude 1200 to 1650 m., 20 October, 
1895, V. W. Nelson, no. 3314 (hb. Gr., and hb. U. S. Nat. Mus.). 
Urbinella, n. gen. of Composite (Tagetinee). Heads heterogamous, 
radiate. Involucre campanylate ; bracts l-seriate, free or very slightly 
united at the base. Receptacle conical, naked. Ray-flowers uniseriate, 
fertile. Disk-flowers regular ; tube slender, gradually ampliated above 
into a 5-toothed limb. Anthers minutely toothed at the base, appendaged 
at the apex. Style-branches sublanceolate-appendaged. Achenes of ray- 
and disk-flowers uniform, terete, many-striate. Pappus paleaceous of 
5 to 7 scales, some or none awn-bearing. Small annuals with alternate 
leaves. 
U. Palmeri. Glabrous throughout: stem 0.5 to 2 dm. high, simple 
or much-branched, more or less purplish: leayes simple and undivided, 
linear or subterete, 0.5 to 2.5 cm. long, obtusish, bearing 1—several 
rather conspicuous glands, one of which usually occurs near the tip: 
heads nodding or erect, 5 to 9 mm. high, including the rays 1 to 1.5 cm, — 
in diameter, terminating the stem and branches on slender peduncles: 
involucral bracts mostly 5, oblong or obovate-oblong, about 5 mm, long, 
externally obtusely keeled along the median line, scarious-margined, 
slightly lacerated or unevenly margined at the rounded tip, bearing 
1-several roundish or elliptic-oblong glands: ray-flowers 5 ; tube slender, 
2 mm. long; rays white with a yellowish base, obovate or obovate-cuneate, 
5 to 6 mm. long, nearly or quite as broad: disk-flowers few to many (40 
or less), light yellow: anthers narrowly appendaged at the tips : scales 
of the pappus obovate-cuneate to lanceolate, one or two awn-bearing : 
