60 ROBINSON 
This species has not been seen by the writer. The foregoing 
description is condensed from the original diagnosis of Prof. Hierony- 
mus. 
40. E. Bridgesii Robinson. Probably herbaceous or nearly so, 
slender, erect, 3 dm. or more in height; stem terete, 2-3 mm. thick, 
pale yellowish-green, densely covered with very short incurved hairs, 
corymbosely branched above, leafy up into the inflorescence; leaves 
subopposite or the uppermost alternate, rhombic- or lanceolate- 
ovate, acuminate at both ends, 3-5-nerved from above the base, 5 
em. long, 15-18 mm. wide, membranaceous, pale green, above (es- 
pecially near the margin) scabrous-puberulent, beneath scarcely 
paler, puberulent on the light-colored nerves and chief veins, the 
margin entire or with very few (mostly 1-2 on each side) mucronate 
teeth; petiole 4-7 mm. long; corymb terminal, compound, flattish, 
2-2.5 dm. wide; branches and pedicels (3-6 mm. long) slender, stra- 
mineous, puberulent; heads very numerous, about 25-flowered, 7 
mm. high, 4 mm. thick; involucral scales about 22, graduated, very 
unequal, pale green, mostly 2-costulate, the outermost short, ovate- 
lanceolate, acuminate, dorsally appressed-puberulent, squarrose- 
recurved at the tip, the intermediate gradually longer, lanceolate, 
attenuate, subglabrous; the innermost linear-oblong, smooth; cor- 
ollas pink, 4 mm. long, glabrous, gradually enlarged upward, a little 
granulate on the outside of the limb; achenes dark-brown, upwardly 
hispid on the lighter-colored angles; pappus-bristles about 27, 
scarcely 2.5 mm. long—Proc. Am. Acad. lv. 7 (1919). 
Bouivia witHout Locatity: Bridges (K., phot. Gr.). 
41. E. triosteifolium Rusby. Fruticose, 3-4 m. high; stems 
when young somewhat 6-angled, tomentellous; internodes 3-10 cm. 
long; leaves opposite, 2-3 dm. long, 6-11 cm. wide, oblong-lanceo- 
late or -ovate, caudate-acuminate, mucronulate-serrate, sessile by a 
long entire gradually attenuated petiolar base (3-6 cm. in length), 
pinnately veined, membranaceous, green on both surfaces, puberu- 
lent on the mid-nerve, elsewhere glabrous or nearly so; corymb com- 
pound, trichotomous, convex, many-headed; pedicels 4-10 mm. 
long, tomentellous; heads 40-60-flowered, about 8 mm. high, 1 cm. 
thick; involucre subtriseriate, campanulate, yellowish-green; scales 
25-40, thin, obtusish, mostly with 3 green nerves and relatively broad 
and pale margins; corollas white, slenderly trumpet-shaped, hispid 
on the limb, 5.5. mm. long; receptacle, flat, glabrous; achenes 
(immature) 2.2 mm. long, hispidulous on the angles.—Bull. N. Y.- 
Bot. Gard. iv. 379 (1907). 
