142 CALIFORNIA. [Cornea;. 



unculo foliis breviore, involucri foliolis foliaceis lanceolatis integerrimis umbella compacta 

 simplice longioribus. 



First discovered, along with the following species, by Mr. Menzies. The general similarity of the plant 

 to Arctopus capensis has suggested the specific name. There are scarcely any stems, and the umbels are 

 nearly concealed among the leaves, which are almost fringed with long narrow and much acuminated teeth, 

 the larger ones of which are likewise so fimbriated. 



2. Sanicula Menziesii ; caulescens, superne subpaniculata, foliis longe petiolatis profunde 

 trifidis, lobis lato-obovatis cuneatis inciso-serratis serraturis acuminatissime mucronatis, 

 umbellis compositis, involucelli foliolis lanceolatis acutis umbellam sequantibus. 



Evidently allied to the <S. arctopoides ; but having a stem nearly a span high, with compound umbels, 

 the umbellules globose, flowers small, yellow. 



1. Eryngium aquaticum ? Linn. 



There are no leaves, and only the extremity of a stem of a solitary specimen, so that we are unable 

 satisfactorily to determine the species. 



1. Cicuta maculata ? Linn. 



1 . Apium graveolens. Linn. 



1. Discopleura capillacea. De Cand. Mem Umb. v. 5. p. 38. t. 8. A., Prodr. v. 4. p. 106. 



1. Heracleum Sphondylium ? Linn. 



A wretched specimen of this obliges us to put a mark of doubt to the name. 



1. Helosciadium ? Calif ornicum ; procumbens? foliis pinnatis pinnis 8-11 ovatis acutis 

 inciso-serratis inferioribus pinnatifidis vel pinnatis, pinnulis paucis, umbellis lateralibus ter- 

 minalibusque, involucris involucellisque plurifoliolatis, stylis elongatis. 



This has a good deal the habit of the Helosciadium repens of Europe, but is vastly larger, with more 

 numerous and more divided pinnae. It appears likewise to depart from the generic character, in having 

 several leaves to the involucre, and a long style. The fruit is essentially the same in both. 



The Herbarium contains two other Umbelliferous plants, from California, but with fruit so young, that we 

 cannot refer them to any known genus. Both have their leaves many times divided into very narrow, linear, 

 almost filiform segments, and the vagina of the leaf is singularly large and inflated. The one is nearly 

 stemless, very pubescent, almost woolly about the umbels and involucres. The involucella are about as long 

 as the umbellules, broadly lanceolate, and apparently entire : the very short stems (many arising from the 

 crown of the root) bear each a peduncle about as long as the leaves. The other has a flaccid, apparently 

 procumbent stem, with remote leaves, and is nearly glabrous. There are no involucres, and the involucella 

 are lobed in a somewhat palmated manner, with the lobes acute, and about as long as the small compact 

 umbellulm. 



Ord. XXI. CORNER. De Cand. 



1. Cornus alba. Linn. — C. circinata. Cham, et Schlecht. in Linncea, v. 3. p. 339. (vix 

 L 'Herit.) 



This exactly agrees with our specimens of C. alba, from the United States ; and, indeed, scarcely differs 

 from O. circinata of L'Heritier, with which Chamisso unites it, except in the shape of the leaves. It extends 

 as far north as the Columbia on the western side of America. 



