256 COMPOSITE FAMILY 



2. B. deltoidea Nutt. Like no. 1 but leaves green and 

 rough and the involucre only slightly woolly. Stem-leaves 

 (1 or 2 in. long) lanceolate. — With no. 1 but less common. 



3. B. hookeri Nutt. Leaf-blades 5 to 10 in. long, pinnately 

 parted into many narrow lobes, gray-pubescent. Heads soli- 

 tary on naked peduncles from the root. — In the lower part of 

 the pine belt, as at Big Meadows. 



21. WYETHIA. 

 Perennial herbs with thick roots and large entire alternate 

 leaves. Heads few, large, on leafy stems. Rays and disk 

 yellow. Akenes 4-sided, with persistent pappus of unequal 

 scales or awns. 



1. W. mollis Gray. Plant white with soft wool, 1 to 3 ft. 

 high. Leaves oblong and ovate, 6 to 15 in. long, 2 to 9 in. 

 wide, petioled. Involucre about 1 in. high, soft-woolly. Rays 

 yellow, 1 in. or more long. — Dry places almost throughout our 

 district. 



2. W. angustifolia var. foliosa Hall. Plant green, rough- 

 hairy, 1 or 2 ft. high. Leaves lanceolate, 4 to 12 in. long, y 2 

 to 2 in. wide. Involucre about Y in. high, stiff-hairy. Rays 

 yellow, about 1 in. long. (IV. foliosa Congdon.) — Common in 

 the Yellow Pine Belt. 



3. W. elata Hall. Plant gray with soft hairs but not woolly, 

 2 to 4 ft. high, from rootstocks. Leaves ovate, acute, the base 

 broad, 4 to 7 in. long, V/ 2 to 4 in. wide, all petioled. Involucre 

 soft-pubescent; bracts ovate, the outer leaf-like. Rays yellow, 

 20 or more, 1 or 2 in. long. Pappus a scaly toothed crown. 

 (W. ovata Gray. Not W. ovata T. & G.) 



This rare species was first collected on "dry hillsides at 

 Clark's, Mariposa Co." by H. N. Bolander. It also grows 

 along the Pohono trail and at Darrah. 



22. HELIANTHUS. Sunflower. 



Coarse rough herbs with leafy stems, the leaves alternate 

 (or the lower opposite). Rays yellow; disk purplish, flat. 

 Akenes thick, 4-sided, bearing pappus-scales at the angles. 



1. H. annuus L. Common Sunflower. An erect annual, 

 2 to 10 ft. high, the stems rough. Leaves petioled, 4 to 10 

 in. long, broad-ovate, toothed, or the uppermost narrow and 

 entire. Heads 2 l /> to 5 in. across (including rays); bracts 

 ovate, slenderly tipped, hairy on the edges. — In. fields near the 

 settlements. 



