20 [Feb. 



closely imbricated, the scales in 5 rows, lanceolate, acutely acuminated, smooth, 

 the lowest very small, 1 -nerved and somewhat carinate ; pappus fulvous. 



Hah. In the sierra of Upper California. Nearly allied to C. pumila, but 

 with a different involucrum. Achenia smooth, 5-ribbed. 



*OXYTEN[A.t 



Cflj9«7u/Mm heterogamous, many-flowered, the marginal ones in a single series, 

 apetalous and feminine. Florets of the disk tubular, masculine. Involucrum 

 composed of a single series of imbricated, ovate, rather rigid scales, (about 5.) 

 Receptaculum small and flat; its palea narrow, spathulate and membranaceous, 

 tufted with long hairs. — Male Flowers. Corolla obconic, with a narrow tube; 



border .5-toothed. Anthers distinct FE>rALE. Corolla none. Stig;maia terete, 



filiform, smooth. Achenia bluntly obovate, obcompressed and ridged on the 

 inner side, covered with dense white hairs, situated beneath the scales of the 

 involucrum and without pappus. 



O. acerosa. 



A large, erect, spreading bush, with the inflorescence of an Tva ■ the leaves 

 alternate, acerosely linear and rigid, pinnately divided into trifid or more com- 

 pound divisions ; capituli sessile, arranged in a compound panicle, as in many 

 Artemisias. The whole plant very bitter, but with very little aroma. In habit 

 more allied to Artemisia than Ira. Appears to be nearly related to Euphrofsyne. 

 of DecandoUe, as well as to Pycrothunmus and Cyclacluena, which last, how- 

 ever, is not sufficiently distinct from ha, 



Hab. Rocky Mountains, near Upper California. Flowering in October and 

 November. 



GNAPHALIUM. 



G. *ramosissiminn. Stem tall and stout, very much branched, the 

 branches fastigiate; leaves and stem green but pubescent, the former linear-lan- 

 ceolate, acuminate, strongly decurrent, viscidly pubescent ; heads mostly peduncu- 

 late in scattered corymbs ; scales of the yellowish-white involucrum oblong- 

 lanceolate, subacute, longer than the florets; achenia smooth. 



Hab. Monterey. Flowering in September and October. 



STEPHANOMERIA. 



S. *elata. Stems stout, erect, grooved and attenuated upwards ; 

 leaves almost filiformly linear, the lowest somewhat pinnatifid, the upper la- 

 ciniately toothed at the embracing base; flowers in a small terminal panicle, 

 (blue,) florets about 10 ; achenia cylindric-oblong, 5-grooved, somewhat rugose. 



Hab. Santa Barbara, Upper California. 



PTILOMERIS. 



P. *tenella. Pappus of 8 to 10, cuneiform, obtuse fringed scales, in the rays 

 minute ; involucrum campanulate, about 8 leaved ; scales ovate, somewhat obtuse ; 

 leaves mostly opposite, pinnatifid, the divisions few, narrow linear. 



Hab. In thevicinityof Pueblo de Los Angeles, Upper California. Flowering 

 in April. Very distinct from the Hymenoxys Californica of Hooker. 



P. *affi.nis. Similar to the preceding, excepting the pappus, which is fimbri- 



+ From olt'T'fvJjf acuminate. In allusion to the rigid narrow foliage 



