50 BOTANY OF THE VOYAGE OF THE SULPHUR. 
Fratex 2-3-pedalis, ramosissimus, ramulis lignoso-carnosis subaphyllis, ultimis crassis vix pollicaribus. 
Folia perpauca, carnosula, vix 2 lin. longa. Pedunculus crassus, 1 lin. longus. Involucrum campanulatum, 
limbo plano 8 lin. diametro, laciniis exterioribus margine membranaceis, interiorum lobis fimbriatis. Flores 
masculi numerosi. Capsula subcarnosa, 3 lin. diametro. Stylus ad medium sexfidus. 
Plate XXIII. B, fig. 1, involucre laid open ; fig. 2, male flowers; fig. 3, single male flower and 
bractea ; fig. 4, female flower ; fig. 5, seed ; all magnified. 
168. Evpnorsra polycarpa, sp. n., annua, glaberrima, basi verticillato-ramosa, ramis diffusis 
dichotome ramosissimis teretibus, foliis sub verticillo cuneato-oblongis, ramorum oppositis oblique 
obovato-orbiculatis integertimis basi subcordatis, capitulis parvis pedicellatis, summis fasciculatis, 
involucri dentibus exterioribus petaloideis integris involucro ipso zequilongis, fructibus leevibus vel ad 
carpellorum dorsum punctulato-scabris, seminibus levibus albidis —Bay of Magdalena. 
Rami ad apicem caulis brevissimi, simplices vel ab ipsa basi numerossimi, fasciculato-subverticillati, in- 
wquales, gracillimi, Jeeves, repetite et ineequaliter dichotomi vel ad nodos inferiores subfasciculato-ramosi, usque 
ad 6-9 poll. longi, Folia sub verticillo perpauca, obtusissima, integerrima, basi angustata, 2-4 lin. longa. 
Folia ramealia 1-3 lin. longa, Stipule parvee, ovate, acute, integra vel apice laceree, ad folia inferiora oblite- 
rate. Capitula quam in FZ. chamesyce minora. Appendices petaloidece involucri majores albze vel rosex, 
glandula depressa integra ; dentes interiores breves, acuti. Capsula vix semilineam longa. 
This little plant is near our E. chame@syce, and also probably to E. calli- 
trichoides, Humb. et Kunth, but differs in several points from both. The petaloid 
appendages are much larger and more conspicuous than in E. chamesyce. 
169. Evrnorsta serpens, Humb. et Kunth? Nov. Gen. et sp. v. 2. p. 52.— Folia omnia 
integerrima. Squamee petaloidez involucroram parum conspicue, integra vel obsolete trilobe. 
Semina albida, lavia.—San Pedro. 
170. Evruorsta leucophylia, sp. n., herbacea, stipulata, a basi dichotome ramosa, undique 
albo-lanata, foliis oppositis subsessillibus orbiculato-cordatis argute dentatis, capitulis terminalibus 
aggregatis, involucri dentibus exterioribus petaloideis latis integris vel crenatis involucro ipso 
equilongis, capsula pilosa, seminibus albidis levibus.-—Cape San Lucas. 
= erin semipedalis, ut videtur annua. Rami crassiusculi, teretes, pilis mollibus albidis dense lanati. 
Stipules minute, ovate, Folia 3-4 lin. longa et lata, crassiuscula, basi cordata, margine cartilagineo ineequa~ 
Titer vel subduplicato-dentata, utringue vel preesertim in pagina inferiore tomento niveo vestita, Capitula ad 
apices eens in glomerulum congesta, Involucra turbinata, tomentosa; dentes exteriores petaloidei ? lin. 
longi, 1 Tin. lati, glandula elliptica integra, Capsule quam in £. pilulifera majores, pilis laxis vestitee. 
hee EvrHoneta Magdalene, sp. v., fruticosa, stipulata, divaricato-ramosa, glaberrima, foliis 
oppositis petiolatis obovato-oblongis obtusis vel emarginatis integerrimis, capitulis axillaribus 
alaribusque solitariis parvis, involucri dentibus exterioribus petaloideis obovato-orbicularibus vix 
involucro brevioribus, capsulis glabris levibus, seminibus albidis leevibus.—Bay of Magdalena. 
Rami teretes cortice albido. Ramuli : ee 
She ooni Reece Sek : uli fere angulo recto divergentes, oppositi vel seepius abortu solitarn, 
48h ereseg | reves, late, mox obliterate. Petioli brevissimi. Folia 3-5 lin. longa, 
2-23 lin, icelli i i 
+t lin tata. Pedicelli breves, pauci. Inyolucra vix semilinea longiora, turbinata, levia. Squame peta- 
cides conspicue, albee. Glandule parve, integree, Capsula semilineam longa. 
