COMPOSITA, 173 
11. Zexmenia imbricata, Schz. Bip. in Seem. Bot. Voy. ‘Herald,’ p. 306. 
Mexico (Henke). 
12. Zexmenia lantanifolia, Schz. Bip. in Seem. Bot. Voy. ‘Herald, p. 305. 
Lipocheta lantanifolia, Schauer in Linnza, xix. p. 729. 
SoutH Mexico, Zimapan (Aschenborn; Coulter, 326). Hb. Kew. 
13. Zexmenia lindenii, Schz. Bip. in Seem. Bot. Voy. ‘ Herald,’ p. 306. 
SoutH Mexico, Mirador, Vera Cruz, 3000 feet (Linden, 1197). 
14. Zexmenia longipes, Benth. in Vidensk. Meddel. 1852, p. 95. 
Costa Rica, Volcan el Viejo (Grsted, 228). Hb. Kew. 
15. Zexmenia macrocephala, Hemsley. 
Lipocheta macrocephala, Hook. et Arn. Bot. Beech. Voy. p. 436. 
South Mexico, Acapulco (Hinds). Hb. Kew. 
16. Zexmenia microcephala, Hemsley, n. sp. 
Fruticosa, cinerea, scabrida, foliis ovato-lanceolatis rugosis, capitulis parvis ad 24-floris, corymbis 
oligocephalis, involucri bracteis decussatis interioribus apice coloratis, acheniis 2-3-alatis, alis 
sursum productis, aristis coherentibus. 
Frutex, ramis teretibus foliisque cinereo-scabridis. Folia breviter petiolata, crassiuscula, ovato- 
lanceolata, 14-4: poll. longa, minute calloso-serrulata, obtusiuscula, subtrinervia, supra rugosa, 
simul strigillosa, subtus strigillosa, pallidiora, venis elevatis. Capitula fasciculato-corymbosa, 
4-8 aggregata, 4-5 lineas longa, 2-3 lineas lata, ad 24-flora, pedunculis gracilibus, usque ad 
9 lineas longis ; involucri bractez seepe 12, decussate, subcoriacez, oblonge vel ovate, glabre- 
scentes, apice rotundatz, exteriores minores, interiores apice colorate; receptaculum fere 
planum ; pales membranacee, glabree, lacerato-lobate, lobo centrali longiore, lineari, obtuso, 
apice colorato. Flores radi szpe 4; ligule oblongo-elliptice, 2-3 lineas longe. Flores disci 
ad 20; corollz infundibuliformes, lobis hirsutis. Achenia glabra, 2—-3-alata ; ale ciliate, sursum 
product, aristis adherentes; squamule nulle.—Lipocheta umbellata, Hook. et Arn. Bot. 
Beech. Voy. p. 436, non DC. 
Soutn Mexico, between San Blas and Tepic (Sinclair). Hb. Kew. 
17. Zexmenia monocephala, Schz. Bip. in Seem. Bot. Voy. ‘ Herald,’ p. 306. 
Lipocheta monocephala, DC. Prodr. v. p. 610. 
SoutH Mexico, Mirador, Vera Cruz (Sartorius). 
18. Zexmenia ovata, Benth. et Hook. Gen. Pl. ii. p. 373. 
Tithonia ovata, Hook. Bot. Mag. t. 3901. 
Mexico. 
19. Zexmenia salvinii, Hemsley, n. sp. 
Foliis late ovatis, capitulis paucis breviter pedunculatis, involucri bracteis decussatis 4 exterioribus 
strigosis amplis quam flores longioribus, acheniis 2—3-aristatis, aristis alatis, squamulis inter- 
mediis sepius nullis. 
Herba caulibus vel ramis crassiusculis, pilosis. Folia breviter petiolata, late ovata, 3-4 poll. longa, 
3-2 poll. lata, acuminata, vix acuta, crenato-serrata, supra scaberrima, subtus pilosula. 
Capitula ad 1 poll. diametro, in apicibus ramorum solitaria vel 2-3 aggregata, breviter peduncu- 
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