COMPOSITA. . 129 
10. Baccharis elegans, H. B. K. Nov. Gen. et Sp. iv. p. 60, t. 324. 
Mexico? (Humboldt & Bonpland). 
Var. seemannil, Sch. Bip. in Seem. Bot. Voy. ‘Herald,’ p. 303. 
NortH Mexico, Sierra Madre (Seemann, 2015). Hb. Kew. 
11. Baccharis emoryi, A. Gr. in Torr. Bot. Emory Exped. p. 83. 
Catirornia.—NortH Mexico, along the Gila. 
12. Baccharis henkei, DC. Prodr. v. p. 401. 
SoutH Mexico, around Real del Monte (Henke). 
13. Baccharis heterophylla, H. B. K. Nov. Gen. et Sp. iv. p. 62. 
Nortu Mexico, region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 405), 
Sierra Madre (Seemann, 1996); Sourn Mexico, valley of Mexico (Bourgeau, 169), Tacu- 
baya (Bourgeau, 173, 175), Chalco (Schaffner), Misteca Alta, 7000 to 9000 feet ( Galeotti, 
2138), near Guanajuato, 7200 feet (Humboldt & Bonpland). Hb. Kew. 
14. Baccharis hieraciifolia, Hemsley, n. sp. 
Herbacea, habitu foliisque Hieracii tridentati, ramis apteris, foliis ovato-lanceolatis penninerviis 
remotiuscule calloso-dentatis, capitulis laxe corymbosis, involucri bracteis, 3—4-seriatis lineari- 
lanceolatis, stylis florum sterilium alte bifidis longe exsertis, acheniis immaturis puberulis. 
Herba erecta, 1-2-pedalis, caulibus teretibus, glutinoso-puberulis, apice tantum ramosis. Folia 
(caulina tantum visa) alterna, petiolata vel subsessilia, tenuia, ovato-lanceolata, 2—4-pollicaria, 
superiora gradatim angustiora et breviora, utrinque attenuata, acuta, remotiuscule calloso- 
dentata, supra scabrida, subtus presertim in nerviis venisque pilosula, penninervia, venis dense 
reticulatis. | Capitula omnia laxe corymbosa, multiflora, 9 paullo minora; involucri bractex 
3-4-seriate, leviter glutinoso-puberule, lineari-lanceolate, obtusiuscule, margine scariose, 
apice rubre; receptaculum nudum. lores ¥ steriles ; corolla puberula ; anthere exserte ; 
stylus alte bifidus, longe exsertus, sat puberulus; pappi sete elongate, uniseriate, scabride. 
Flores 2 minores; corolla filiformis (fl. 3-4 centrales corollis latioribus 5-fidis, staminodiis non- 
nullis inclusis). Achenia immatura parcissime puberula ; pappus uniseriatus. 
Sout Mzxico, Desierto Viejo, valley of Mexico (Bourgeau, 951, 1230). Hb. Kew. 
This species is intermediate between Conyza and Baccharis, approaching very closely 
Conyza rivularis, Gard., a Brazilian species. In some of the specimens all the flowers 
are hermaphrodite, with exserted stamens and very long styles ; in others all are female, 
with filiform corollas, except three or four central ones, which have broader-lobed corollas 
and included, apparently barren, stamens or staminodia. 
15. Baccharis hirtella, DC. Prodr. v. p. 418. 
Sour Mexico, Orizaba (Botteri, 490, 1144, 1170; Bilimek, 516; Bourgeau, 2993), 
valley of Cordova and San Nicolas (Bourgeau, 955, 1637 1), Consoquitla (Liebmann, 52). 
Hb. Kew. | 
16. Baccharis lancifolia, Less. in Linnea, ix. p. 266. 
Sour Mxxico, near Jalapa (Schiede & Deppe). 
BIOL. CENT.-AMER., Bot. Vol. I1., June 1881. 8 
