* 
28 BOTANY OF THE VOYAGE OF THE SULPHUR. 
91. Hetrantuus californicus, DC.—Torr. et Gr. Fl. N, Amer. 2. p.325?—The specimen is 
too much injured to determine accurately—San Francisco. 
92, Het1anruvs scaberrimus, sp. u., caule elato scabro-hispido, foliis inferioribus oppositis 
supremis alternis petiolatis ovato-lanceolatis acuminatis integerrimis basi cuneatis supra scaberrimis 
obscure triplinerviis, involucri squamis ovatis scabris ciliatis longe acuminatis, acheeniis puberulis 
demum glabratis, pappo bipaleaceo.— Bodegas. 
Rami adsunt superiores, pilis brevibus rigidis asperati. Ramuli floriferi elongati uti folia superiora alterna. 
Folia caulina opposita 2-5-pollicaria, longiuscule petiolata, nervis subtus tantum prominulis. Capitula magni- 
tudine H. californici. Squame inyolucri foliacee, exteriores 1-2 interdum elongate, foliiformes, omnes longe 
subulato-acuminatee et pilis rigidis ciliate. ales receptaculi apice sepius tridentate, dente medio elongato 
acute acuminato. Achzenia juniora pube adpressa plus minus vestita, matura glabrescunt. Pappi palez lato- 
lanceolate, concavee, acute vel apice fimbriate, caducissime. 
This certainly much resembles my specimens of H. californicus from 
Douglas, but the leaves are shorter and broader, and the scales of the involucre 
are very different. It is, however, very difficult, from dried specimens, to distin- 
guish accurately the species of a genus like this, where the size of our herbaria 
will only admit of mere fragments of the larger species. 
93. Corzocarpus parthenioides, gen. nov. Verbesinearum, (Plate XVI.)—Bay of Magdalena. 
Cuar. Gen. Capitulum hemisphericum, multifloram, radiatum. Involucri squame circa 5, 
ovate, subzequales, leviter imbricata. Palez receptaculi lineares. Ligule circa 5, foeminee. Flores 
disci numerosi, tubulosi, 5-dentati. Styli rami appendice longa acuta superati. Achzenia obcom- 
pressa, radii margine crasso rugoso cincta et aristis 2 brevibus retrorsum hispidis coronata, disci 
anguste marginata, calva. 
Species unica: C. parthenioides. 
Herba perennis? ramosa, suberecta, semipedalis, glabra vel partibus 
junioribus vix canescentibus. 
Folia opposita, petiolata, pinnatisecta, segmentis obovatis oblongisve grosse 
inciso-dentatis pinnatifidisve crassiusculis. Pedunculi pauci monocephali. Capitula magnitudine et forma fere 
Unie, Involucri campanulati squame lineam longee, ovatee vel obovate, brevissime acuminatz, juniores 
opacee marginatee, demum membranacew, venose. Receptaculi pales exteriores ovali-oblong, interiores 
oblongo-lanceolatee vel lineares, floribus disci breviores. Ligule seepissime 5, interdum 6, tubo glabro invo- 
locren: eequante ; lamina ovali-oblonga, 4-nervis, vix apice dentata, 2 lin. longa. Corolle disci involucro paullo 
longiores, tubi parte tenui brevissima, fauce tubulosa ampliore basi extus annulo squamellarum aucta. 
Anthere inclusw, ecaudate. Styli ramorum appendicula sublinearis hirsuta. Ovaria omnia compressa, mar- 
ginata, apice nuda, aristis acheeniorum radii vix ante grossificationem conspicuis. Acheenia disci leviuscula, 
radii dorso levia, facie interiore tuberculosa. 
This little plant is evidently allied to Parthenium and Mendezia, approaching 
the former in habit, the latter in character, and with it should be transferred, as 
suggested by De Candolle, to the Verbesinee. The central flowers, though often 
sterile, are always hermaphrodite, and: frequently fertile. 
i ree ae Mss floret i - ray ; fig. 2, floret of the disk; fig. 3, anthers; fig. 4, summit of 
ne SYS NE. 9. achenium of the ray seen from the inner face; fig. 6 from th 
back ; fig. 7, acheenium of the disk. ner face; fig. 6, the same seen from the 
