72 ROBINSON 
Tara: Toldos near Bermejo, alt. 1800 m., Fiebrig, no. 2371 (Gr.). 
60. E. clematideum Griseb. Apparently annual, though often 
somewhat woody toward the base, mostly 3-6 dm. but sometimes 
(ace. to Grisebach) toward 2 m. high, loosely and often sparsely 
hirsute-pubescent; stems terete, weak and pithy; internodes espec- 
ially the upper often 1-1.5 dm. long; leaves opposite, rhombic-ovate, 
acute or obtusish, coarsely crenate-serrate except near the cuneate 
base, membranaceous, green and sparingly hirsute on both surfaces, 
mostly 2.5-5.5 em. long, 1.8-3.5 cm. wide, 3-nerved from the base; 
the teeth about 6 on each side, mostly obtuse, 2-4 mm. high, 5-8 mm. 
wide at base; cymes rather dense, 3-10-headed, terminating the 
stem and spreading-ascending branches; pedicels 2-10 mm. long; 
heads 25-30-flowered, 7-9 mm. high, 4-5 mm. in diameter; recep- 
tacle ovoid-conical; involucre narrowly campanulate, substramineous; 
scales smooth, slightly lucid, 3-5-nerved, lanceolate to oblong, the 
outer sharply acute; corollas light purplish-blue, tubular, slightly 
enlarged upward, smooth; achenes about 2 mm. long, nearly black, 
hispid toward the summit; pappus-bristles about 15, almost white, 
lucid, slightly thickened toward the base—Symb. Argent. 172 (1879). 
E. urticifolium, var. clematideum (Griseb.) Hieron. ex Ktze. Rev. 
Gen. iii. 148 (1898); Chod. Bull. Herb. Boiss. ser. 2, iii. 711 (1903). 
Santa Cruz: Prov. East Velasco, alt. 200 m., Kuntze (a3 5) 
[N. Argent., Paraguay.] 
This plant is very closely related to E. pauciflorum HBK. but is 
considerably stouter and has much shorter pedicels and in conse- 
quence decidedly denser cymes giving it a characteristic habit. It 
seems best to accord it specific rank as did Grisebach. Attention 
may be here once more called to the fact that the binomial E. urti- 
caefolium L. f. (sometimes arbitrarily charged to E. urticifolium), 
which was founded on a plant of quite different affinity, is in any 
event invalid owing to the earlier homonym, E. urticaefolium (L.) 
Reichard, now in use for a common North American species. See 
Robinson, Proc. Am. Acad. xlii. 46 (1906). 
61. E. kleinioides HBK. Nov. Gen. et Spec. iv. 120 (1820); 
Britton, Bull. Torr. Bet. Club, xviii. 334 (1891); Robinson, Proc. 
Am. Acad. liv. 319 (1918), lv. 84-85 (1919) as to var. typicum. 
Prov. Larecaja, Guanai, alt. 610 m., Rusby, no. 1734 (N. Y.). 
). All of these are of the typical hirsute-pubescent 
sy. : i 
[Widely distributed in tropical South America.] - 
