174 . COMPOSITA. 
lata; involucri bractez decussate, coriaceo-scariose, 4 exteriores strigosz, late, obovato- 
oblong, rotundatz, floribus disci longiores, interiores omnino scariose, glabra, angustiores ; 
receptaculum subplanum; pales membranaceo-scariose, complicate, acuminate, glabra, 
floribus fere dimidio breviores; corollz lobi puberuli. Achenia glabra, pallida, longiuscule 
2-3-aristata, aristis inzequalibus, alatis; squamulz intermediz subnulle. | . 
Gvatema.a, Volcan de Fuego, 5300 feet (Salvin). Hb. Kew. 
20. Zexmenia scandens, Hemsley, n. sp. 
Ramis ferrugineo-pubescentibus, foliis ovato-oblongis scabridis, capitulis numerosis corymbosis, 
involucri bracteis imbricatis villosis, paleis apice.dilatatis puberulis, acheniis 2-3-alatis longe 
2-3-aristatis. 
Frutex scandens, ramis oppositis, ferrugineo-pubescentibus. Folia petiolata, rigida, ovato-oblonga, 
3-5 poll. longa (in ramulis ultimis minora), obtusiuscula, remote calloso-serrulata, supra 
scabrida, subtus pubescentia. Capitula homochroma, flava, in apices ramorum corymbosa, 
maxima fere 2 poll. diametro, breviter pedunculata; involucri bractee imbricate, 3—4-seriate, 
exteriores villosz, late ovate, obtusiuscule, interiores scariose, glabre, oblonge; receptaculum 
subplanum ; pale scariose, complicate, floribus breviores, apice dilatate, puberule ; ligule 
late ; corollze disci lobis puberulis. Achenia radii late 3-alata, longe 3-aristata, squamulifera, 
alis ciliatis vel fimbrillatis ; disci vix alata, sed longe 2-aristata. 
SoutH Mexico, valley of Cordova (Bourgeau, 1930). Hb. Kew. 
21. Zexmenia seemannil, A. Gr. Pl. Wright. i. p. 114. 
Nort Mexico, Sierra Madre and the Cerro de Pinal (Seemann, 2019, 1476). Hb. 
Kew. 
22. Zexmenia serrata, Llav. et Lex. Nov. Veg. i. p. 13. 
‘Lipocheta? serrata, DC. Prodr. v. p. 611. 
SoutH Mexico, San José del Corral (La Lilave). 
23. Zexmenia stenantha, Hemsley, n. sp. 
Strigosa, foliis late ovatis subtus villosulis, capitulis multifloris solitariis terminalibus pedunculatis, 
involucri bracteis decussatis, disci corollis gracilibus elongatis, acheniis biaristatis, radii triari- 
statis, arista interiore multoties longiore. 
Frutex, ramis graciliusculis, teretibus, primum puberulis, lenticellatis. Folia breviter petiolata, 
crassiuscula, late ovata vel elliptica, 14-2 poll. longa, breviter acuminata, obtusiuscula, calloso- 
serrulata, supra scabro-strigosa, pilis basi tuberculatis, subtus villosula, pallidiora. Capitula 
homochroma, rosea vel purpurea, multiflora, solitaria, terminalia, pedunculis 2-24 poll. longis ; 
involucri bractee ad 8, decussate, ovato-oblongz, exteriores strigose, interiores breviores, 
scarios ; receptaculum convexum ; pale membranaceo-scariose, acuminate, dorso ciliolate, 
exteriores plane, interiores complicate, acheniis paullo longiores. | Flores radii 10-12 ; ligule 
oblonge, bidentatz, 11-13-striate, ad 6 lineas longee. Flores disci graciles, 8-9 lineas longi ; 
corolle angustissime infundibuliformes, lobis hirs.tis. Achenia radii triangulata vel trialata, 
triaristata, plurisquamulata, arista interiore mulvoties longiore, angulis ciliolatis ; disci com- 
pressa, biaristata, aristis subequalibus, quam corolla multo brevioribus. 
SoutH Mexico, Cuernavaca (Bourgeau, 1204). Hb. Kew. 
24. Zexmenia strigosa, Schz. Bip. in Seem. Bot. Voy. ‘ Herald,’ p. 306. 
Lipocheta strigosa, DC. Prodr. v. p. 610. | 
South Mexico, around Tehuantepec, Oaxaca (Andrieux, 313). 
