210 COMPOSITE. 



Abundant in shallow pools and on muddy banks of tidal streams; occa- 

 sionally on higher lands; flowering throughout the year. 



2. C. AUSTRALIS (Sieb.), Hook. f. Slender, not fleshy, very diffusely 

 branched: leaves bipinnately dissected into linear lobes and somewhat 

 pubescent: heads small; pistillate fl. in 2 rows, their achenes pedicelled, 

 those of the disk less so. Plentiful in gardens, and along some streets 

 in San Francisco and elsewhere. Feb. June. 



62. TAXACETUM, Pliny (TANSY). Kobust aromatic perennials, leafy 

 to the corymbose summit. Leaves ample, 2 3-pinnately dissected into 

 very many divisions or lobes. Heads discoid, erect. Receptacle naked. 

 Flowers yellow. Anther-tips broad, obtuse. Achenes truncate, and 

 with a coroniform-dentate pappus. 



1. T. camphoratnm 9 Less. Camphoric-aromatic, villous-tomentose, 

 very stout but decumbent, the stems 13 ft. long: pinnse and segments 

 of the very large leaves much crowded: heads in a large corymbose 

 cluster, short-peduncled, the low-convex disk % in. broad; achenes 

 4-angled. Abundant on sand dunes about Point Lobos, etc. Aug. Dec. 



63. ARTEMISIA, Diosc. Bitter-aromatic herbs and low shrubs. 

 Leaves alternate. Heads discoid, small, paniculately disposed, usually 

 nodding. Flowers whitish or yellow, often sprinkled with resinous 

 globules. Anther-tips slender and pointed. Achenes obovate or oblong, 

 usually with small summit and no pappus. 



* Shrubby species. 



1. A. Call for uica, Less. Branches ascending, 2 4 ft. high; leaves 

 cinereous with a minute appressed pubescence, terebinthine-scented, 

 the lowest parted into a few linear-filiform segments, the upper entire : 

 heads many, in leafy panicles; involucre 2 lines broad: achenes broadish 

 and truncate at summit, with a squamellate or coroniform-dentate 

 pappus. Southward and westward slopes of hills. Sept. Dec. 



* * Herbaceous species; perennial (except n. 4)- 



2. A. pycnocephala, DC. Stout, erect, simple, very leafy up to the 

 dense close thyrsoid or virgate panicle, densely silky-villous even to the 

 involucre: leaves 1 3-pinnately parted into few and short linear or 

 spatulate lobes: heads 2 lines broad, only the marginal fl. fertile; style 

 of the disk fl. undivided and tufted at apex: achenes glabrous; pappus 

 none. Sandy hills and shores about the Bay. Aug. Dec. 



3. A. dracunculoides, Pursh. Stems clustered, ascending, 24 ft. 

 high, virgately branched: herbage glabrous, pungent scented when 

 bruised, but neither aromatic nor bitter: lowest leaves 3-cleft at summit, 

 the others linear, entire: heads little more than a line broad. Mostly 

 beyond our limits eastward and southward, but said to occur at Black 

 Point, San Francisco, and near Lake Chabot. Aug. Nov. 



