166 PROCEEDINGS OF THE AMERICAN ACADEMY. 
petiole, acuminate, entire, above scabrous, beneath tomentose-canescent : 
peduncles solitary, terminal; involucre several-seriate ; bracts ovate, ob- 
tuse; ray-flowers about 20; ligules exceeding the disk, dentate at the 
apex. — Leopoldina, xxv. 105 (1889).— Central America. Specimens 
examined, — GUATEMALA: Bernouilli, no. 1077 (tracing, in herb. Gray). 
++ ++ Annuals. 
42. Z. rup1s, Baker. A much-branched herb, 6 to 12 dm. high; 
branches densely hispid: leaves broadly ovate to ovate-lanceolate, acu- 
minate usually at both ends, irregularly serrate-dentate, short-petioled, 
strongly hispid-pubescent on both surfaces: peduncles 0.5 to several em. 
long, borne in a lax corymb; involucre campanulate, 5 to 8 mm. broad, 
about 2-seriate ; bracts lanceolate, with foliaceous tips, acute: ray-flowers 
about 10; ligules oblanceolate, 1 cm. long: achenes 2 to 3 mm. long, 
laterally compressed, pubescent; awns 2 to 3, short: squamellae united 
into a short cup, confluent with the awns.—Bak. in Mart. Fl. Bras. vi. 
pt. 3,188 (1884). Wedelia rudis, Benth. in herb. ex Bak. ]. c. — South 
America. Specimens examined,— Braziu: Falls of the Madeira, Rusby, 
2142. 
DovustruL AND Exciupep SPECIEs. 
Zexmenia (?) in sched. pl. Rusby, no. 2138. Oalea, Britton, Bull. 
Torr. Bot. Club, xix. 151 (1892). This plant, if one may judge by the 
specimen received under the number at the Gray Herbarium, is certainly 
neither a Zexmenia nora Calea. It has sterile ray-flowers and the pap- 
pus of a Viguiera. 
Zexmenia in sched. pl. Bang, no. 546, is Oyedaea Pearcei, Rusby, Mem. 
Torr. Bot. Club, iii. pt. 3, p. 59 (1893). 
4. caracasana, Benth. & Hook. f. Gen. ii. 371 (1873), is better treated 
as Wedelia caracasana, DC. 
4. caracasana, Klatt, Bull. Soc. Bot. Belg. xxxi. 202 (1892), is 4 
mixture, Pittier’s no. 3737 is apparently a Wedelia, while his no. 7019 
is Baltimora scolospermum, Steetz. 
Z. dulcis, Coulter, Bot. Gaz. xvi. 99 (1891), is not clearly distinguish- 
able from Z. scandens, Hemsl., but Mr. J. D. Smith’s nos. 2854 and 
6610, referred to Z. dulcis by Coulter in J. D. Smith, Enum. Pl. Guat. 
iv. 86 (1895), seems better placed in Z. virgulta, Klatt. 
4. fasciculata, Coulter in J. D. Smith, Enum. Pl. Guat. iv. 86 
(1895), as to no. 4244, is Perymenium grande, Hemsl., var. strigillosum, 
Robinson & Greenman. 
