Composita.} 
CALIFORNIA. 
149 
of the radical florets; by the marginal achenia without pappus, and by the imperfect manner in which the 
receptacle is provided with scales; Indeed it is difficult to say if these in the present case ought not to be 
viewed as an inner series of involucral leaves, to which some of them bear a close resemblance in colour and 
texture. In Tridax procumbens, the leaves of the involucre do not surround the achenia, and the marginal 
achenia have a pappus precisely the same as those of the disc, and similar to what we have above described 
in our plant. Only one specimen, and that far from a good one, exists in the Collection: the inflorescence 
so resembles a Galardia, that had we not examined it minutely, we should have placed it in that genus. 
1. Helianthus longifolius; herbaceus, foliis alternis oblongo-lanceolatis basi in petioluni 
planum longe attenuatis integerrimis flaccidis penninerviis ntrinque glabris margine ciliato- 
scabris, involucri foliolis subaequalibus discuin superantibus spathulato-oblongis appressis 
margine hispido-ciliatis, pappi aristis solitariis vel binis inaequalibus validis. — Hook. FI. Bor. 
Am. V. 1. p. 313. 
This appears to be a true species of the genus, but the leaves are more like those of a RudbecMa: these, 
particularly the lower ones, are about five inches long, and much attenuated at the base into a flat petiole, 
which is about three inches in length. In the upper ones the limb is longer, while the petiole is shorter. 
In Mr. Douglas’s specimen from the Columbia, the leaves are decidedly glutinous, as if varnished. 
1. Bahia artemisioefolia ; foliis alternis sessilibns profimde pinnatifidis subtus niveo-tomen- 
tosis margine revolutis, capitidis fasciculatis, involucris 9-pbyllis 1-serialibus cylindraceis, 
floribus radii lingulatis. — Lessing in Linnma, v. 5. p. 160, et v. 6. p. 253, 
The above character applies to the usual state of the plant; but sometimes the leaves are either quite 
entire, or they present one, or at most two, short lobes or segments at the side, about the middle. We much 
suspect that in this state it may become the Eriophyllum stachadi folium of Lagasca. All the florets are 
fertile: those of the ray are without stamens, and usually about six in number. Leaves of the involucre at 
first tomentose, but afterwards becoming often quite glabrous. Achenia with four 'or five angles, or pro- 
jecting ridges, somewhat hispid. Scales of the pappus eight or ten, unequal, linear, obtuse and striated, 
about one-fourth of the length of the achenium. Between Eriophyllum of Lagasca, to n hich Mr. Liudley 
has united Trichophyllum of Nuttall, and Bahia, there appears to be almost no difference: indeed, the only 
character pointed out by Lessing consists in the palese of the pappus being unequal, linear, and truncated in 
Bahia, and equal, obtuse, and narrowest at the base in the other genus. In the present individual, the 
palese are not, as Lessing says, truncate, but rounded at the apex ; while, on the other hand, those of Tricho- 
phyllum appear sometimes truncated and lacerated. Nor does their attenuation below, or their equality, 
prove a good character, since in our specimens of what we consider Bahia ambrosioides, from Chili, (the only 
species we have received from that country, and which consequently is the type of Lagasca’s genus Bahia,) 
the palese are short, equal, obtuse, not truncate, and narrower at their base than at the apex. Bahia artern- 
isiafolia was first discovered by Mr. Menzies, in California. 
1. Helenium pubescens; berbaceum, puberulum, caule ramoso alato, foliis alternis oblongis 
inferioribus obtiisis superioribus acuminatis decurrentibus pellucido-punctatis integerrimis, 
capitulis solitariis in ramis longe ante apicem aphyllis, involucro polyphyllo reflexo discnm 
superante, receptaculo subgloboso, radii floscnlis lingulatis trilobis pellucido-punctatis. — 
Helenium pubescens’. Ait? — Ceplialophora decurrens. Lessing in Linncea, v. 6. p. 517. 
Lessing appears entirely to have overlooked the marginal series of scales on the receptacle, which con- 
stitutes this a Helenium, as its habit indicates, and not a Ceplialophora or Actinella. From H. quadriden- 
tatum it differs by the shape of the receptacle, and from H. autumnale by the leaves, which we have always 
found entire, and by the much sm<aller ray, as well as by the long simple one-flowered branches, like those 
of H. quadridentatum. 
