Composites.] 



CALIFORNIA. 



147 



Nearly allied to Baccharis mucronata of this work, (p. 30,) which, from an examination of hetter 

 materials, we have now ascertained to belong- to the present genus, along- with many other Chilian supposed 

 species of Baccharis. 



1. Diplopappus villosus; subdecumbens, hirsute villosus, caule ramoso, ramis subcorym- 

 bosis, foliis sessilibus integerrimis lineari-oblongis subspathulatis acutis margine scabris 

 inferne ciliatis, floribus fastigiatis. Nutt. — Chrysopsis villosa. Nutt. Gen. v. 2. p. 151. — 

 Amellus villosa. Pursh. 



The only specimen in the Collection agrees with Nuttall's specific character. Diplostephium of Kunth, 

 and Chrysopsis of Nuttall, are synonymous with Diplopappus of Cassini. 



1. Grindelia squarrosa; glaberrima, caule herbaceo, ramis breviusculis corymbosis, foliis 

 anguste oblongis amplexicaiilibus serratis, involucri glabri squamis apice angustis squarrosis. 

 — Dun. — Donia squarrosa. Pursh, Fl. Bor. Am. v. 2. p. 559. Bot. Mag. t. 1706. 



a. Folia punctis glutinosis micantibus conspersa. 

 /3. Folia subintegerrima carnosula opaca. 



Although we do not consider these two varieties as distinct species, yet it must he confessed their 

 aspect is very different. Our second variety has quite that peculiar appearance which many plants assume 

 which grow on the sea-shore ; but we are ignorant if this be its true locality. Most authors unite this 

 species with G. inuloides, Willd.j and if they be correct, then the following species stands in a similar 

 situation, for it is in many points intermediate between the two others. 



2. Grindelia hirsutula; pilis albidis hirsutula, caule caespitoso herbaceo parce ramoso, 

 ramis elongatis unifloris, foliis angusto-oblongis subamplexicaulibus serratis, involucri 

 pubescentis squamis lineari-lanceolatis basi appressis apice subsquarrosis. 



Very closely allied to G. angustifolia, Kunth, (not Dunal,) but that species appears to have always a 

 simple stem. This differs from the preceding, by the hairs that are found on its stem, leaves, and involucre, 

 and by the long one-flowered branches. 



3. Grindelia humilis; glabra, caule herbaceo simplici unifloro, foliis radicalibus linearibus 

 obtusis basi attenuatis caulinis sessilibus inferioribus angustissime linearibus superioribus 

 subulatis bracteiformibus, involucri foliolis lineari-lanceolatis apice squarrosis. 



The only specimen in the Collection is about eight inches high, and is very unlike any of the other species. 

 The cauline leaves decrease gradually upwards, resembling subulate bractese. On this plant Messrs. Lay 

 and Collie remark: — " folia recentia lineari-spathulata, antiquiora oblonga basi dilatata spinuloso-dentata;" 

 the latter kind of leaves we have not seen. 



1. Baccharis glutinosa; fruticosa, foliis anguste lanceolatis basi in petiolum attenuatis 

 argute remote serratis 3-plinerviis subtus excavato-punctatis, corymbis terminalibus, involu- 

 cri foliolis margine laceris, achenio scabro. — Pers. — Molina salicifolia. lluiz et Pav. 

 Syst.p. 210 ? 



Perhaps B. salicifolia, Pers., is not distinct, but then Sprengel unites to it B. gnidiifolia, Kunth, of which 

 plant the leaves are described as sessile, and not attenuated into a kind of petiole at their base, as in ours. 

 Chamisso does not appear to have met with this species; but Lessing (Linnsea, v. 0. p. 505,) mentions 

 having found B. linearis, which is surely distinct, otherwise we might have supposed that Lessing and we 

 had the same plant in view. We can perceive only one series of hairs of the pappus. 



2. Baccharis glomeruli flora; fruticosa, foliis approximates obsolete trinervibus obovatis 



t 2 



