RYDBERG: Rocky MOUNTAIN FLORA 65 
broadly oval, short-acuminate, usually merely den- 
tate; the lateral ones often oblique at the base. 4. N. texanum 
Fruit not at all or slightly constricted at the base; 
leaflets lanceolate, ovate or obovate, or the ter- 
minal one rhombic, long-acuminate, usually more 
or less lobed 
Fruit glabrous or with a few scattered hairs, 
ilar to those of the pedicels; mucro 
the anthers minute or obsolete; leaflets 
glabrate above in age. 
Racemes seldom more than 1 dm. long; wings 
scarcely at all decurrent on the body of 
the fruit. 5. N. interius. 
Racemes in fruit 1.5-2 dm. long; wings de- 
current on the ge of the fruit almost to 
t m of the s 6. N. Kingii. 
Fruit ake See mucro of the anthers 
more distinct, nearly 144 mm. long; leaflets 
densely pubescent on both sides. 7. N. californicum, 
fiat 1 
+ a ays aoe e 
and evenly Pe LUWaAIOUS LIC Dast, 
style shades: 8. N. mexicanum. 
. Negundo orizabense Rydb. sp. nov. 
A tree with glabrous, brownish twigs; leaves 3-foliolate; 
pedicels slender, glabrous, 5-10 cm. long; leaflets thin, glabrous or 
with a few scattered hairs on the ribs below, acuminate at both 
ends, serrate above the middle, with broadly ovate teeth directed 
forward and mucronate; the terminal leaflet rhombic-oval, 5-10 
cm. long, with petiolules 1-2 cm. long; the lateral ones lanceolate, 
oval or oblanceolate, short-petioluled; racemes in fruit 2 dm. long 
or more, the pedicels very long and slender, the lower 5-8 cm. 
long; samaras ascending, glabrous; body oblong, about I cm. 
long and 4 mm. wide, acute but not constricted at the base, with 
one strong and several weak longitudinal veins; wing about 2 cm. 
long and nearly I cm. wide, somewhat incurved above, not 
decurrent on the body 
Mexico: Orizaba, 1853 and 1855, Fred. Miiller (type, in herb. 
Columbia University). 
2. Negundo Negundo (L.) Karsten, Deuts. Fl. 596. 1880-3* 
DISTRIBUTION: From Ontario and Vermont to Georgia, Mis- 
souri and Illinois. 
3. Negundo Nuttallii (Nieuwl.) Rydb. 
Acer fraxinifolium Nuttall, Gen. N. Am. 1: 253. 1818. Not 
sect fraxinifolium Raf. 1808. 
zk Nieuwland, American Midland Nat 3 Igit. 
for ry y 
