406 Inuleae 



ovate-lanceolate, either entire or serrulate, 3-nerved from near 

 the base, 7-14 cm. long; heads about 6 mm. high; involucral 

 bracts erose-ciliate, thin and pale with a greenish center; pappus 

 of pistillate flowers scarious, 4 mm. long, soft, of staminate clav- 

 ellate and barbellate at the summit. 



Occasional along streams in our coast region. Ballona Creek; Los 

 Angeles River. August-October. 



5. B. glutinosa Pers. Stems herbaceous above, woody below, 

 1-3 m. high; branches striate-angled ; leaves very glutinous, 

 lanceolate, acute, denticulate or repandodentate, 5-7 cm. long; 

 heads in ample cymose panicles at the ends of simple slender 

 branches, mostly 6 mm. high; involucre stramineous, destitute 

 of green center or distinct costa. 



Occasional on borders of marshes. August-November. 



6. B. vixninea DC. Shrubby and willow-like, producing short 

 lateral flowering branches, these terete and minutely striate; 

 leaves narrowly lanceolate, entire or sparingly denticulate, ob- 

 scurely 3-nerved, 5-7 cm. long; heads about 4 mm. high, hemi- 

 spheric, in small cymose clusters; involucre tawny, destitute of 

 green center or costa. 



Very common along all our streams throughout our range. April-July. 



Tribe 3. INULEAE. EVERLASTING TRIBE. 



Annual or perennial mostly white-woolly plants, with 

 alternate or opposite leaves and small dioecious heads. 

 Involucral bracts often white or scarious, imbricated. 

 Pistillate flowers mostly white, with filiform corollas. 

 Anthers caudate at base, unappendaged at apex. Pappus 

 capillary or none. 



Involucral bracts many; receptacle naked. 



Bracts dry, but not scarious. 20. PLUCHEA. 



Bracts scarious. 25. GNAPHALIUM. 



Involucral bracts few or none; receptacle chaffy. 



Bracts completely enclosing their achenes; pappus none. 



Achenes gibbous. 21. MICROPUS. 



Achenes straight or somewhat curved. 



Receptacle columnar. 22. STYLOCLINE. 



Receptacle globose or ovoid. 23. PSILOCARPHUS. 



Bracts of 2 kinds, the lower completely enclosing their achenes; the others 

 chaff-like, surrounding a central cluster of flowers. 



24. FILAGO. 



