64 PITTONIA. 
CHRYSOTHAMNUS ANGUSTUS. Two feet high or more, the 
stoutish very erect branches of the season fastigiate, very copi- 
ously floriferous, each terminating in a large pyramidal thyrsus 
of middle-sized heads, leaves nearly filiform, 2 or 3 inches long, 
ascending or spreading, somewhat resinous and canescently 
woolly : bracts of the involucre in 4 series, scarcely conduplicate, | 
the inner linear-lanceolate obtusish, the outer and shorter acute, 
all glabrous and somewhat viscid up and down the midnerve: — 
short corolla-tube sparingly short-setulose, passing quite gradu- 
-ally to the throat; segments quite deep, spreading: pappus 
quite white ; achenes appressed silky. 
Specimens known only from the half desert plains of north- — 
eastern California, in Modoc Co., where they were collected near 
Alturas by Mrs. Austin, and by Baker and Nutting in “ Big 
Valley,” both in the year 1894. By its canescent woolliness, and 
some other characters, it is to be distinguished from C. pinifo- — 
lius and O. consimilis. i 
NEw SPECIES OF APOCYNUM. 
À. SALIGNUM. Related to A. cannabinum, evidently smaller, 2 
the herbage of a paler hue, and that of both faces of the leaves 
quite the same: cauline leaves oblong-lanceolate, somewhat 
acuminate, 3 or 4 inches long, subsessile, the veins in no wise 
conspicuous; branching not dichotomous, the branches far ex- 
ceeding the main axis, very leafy, mostly sterile, their leaves 
elliptic-lanceolate to linear-lanceolate, 2 to 24 inches long, very 
acute but oot mucronate: the mostly solitary cyme linear- 
bracted, rather few-flowered ; sepals lanceolate, quite surpassing 
the cylindric tube of the small white corolla. : 
The only specimen of this, a very willowy-looking plant, with 
singularly narrow and acuminated foliage, was brought to me 
from somewhere in Humboldt County, California, many years 
since; by Messrs. Victor Chesnut and Elmer Drew, at that time — 
my pupils. a 
