Composites.] 



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 Tr,idax 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 long if alius ; herbaceus, foliis alternis oblongo-lanceolatis basi in petiolum 

 planum longe attenuatis integerrimis flaccidis penninerviis utrinque glabris margine ciliato- 

 scabris, involucri foliolis subsequalibus discum superantibus spathulato-oblongis appressis 

 margine hispido-ciliatis, pappi aristis solitariis vel binis inaequalibus validis. — Hook. FL Bor. 

 Am. v: I. p. 313. 



This appears to be a true species of the genus, but the leaves are more like those of a Rudbechia: 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 artemisicefolia; foliis alternis sessilibus profunde pinnatifidis subtus niveo-tomen- 

 tosis margine revolutis, capitulis faseiculatis, involucris 9-pbyllis 1-serialibus cylindraceis, 

 floribus radii lingulatis. — Lessing in Liancea, v. 5. p. 160, el 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 stachadifolium 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 which Mr. Lindley 

 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 palea? 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 amhrosioides, 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 artem- 

 isicefolia was first discovered by Mr. Meuzies, in California. 



1. Helenium pubescens; herbaceum, puberulum, caule ramoso alato, foliis alternis oblongis 

 inferioribus obtusis superioribus acuminatis decurrentibus pellucido-punctatis integerrimis, 

 capitulis solitariis in ramis longe ante apicem aphyllis, involucre polyphyllo reflexo discum 

 superante, receptaculo subgloboso, radii flosculis lingulatis trilobis pellucido-punctatis. — 

 Heleniiun pubescens. Ait? — Cepbalopbora 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 Cephalophora or Actinclla. From qnadriden- 

 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 smaller ray, as well as by the long simple one-flowered branches, like those 

 of H. quadridentatum. 



