152 CALIFORNIA ACADEMY OF SCIENCES. 



perhaps quite local, new thistle. The root is, as in all our 

 native species, biennial. 



Stephanomeria tomentosa. Annual, stout, 3 — 5 feet higli, 

 paniculate above the middle, white-tomentose throughout 

 when young, the inflorescence glabrate : lower leaves spatu- 

 late in outline, runcinate-pinnatifid. upper lanceolate, nearly 

 or quite entire : heads 3 — 4 lines high, closely ranged along 

 the upper half of the virg ite branches, 5 — 8 flowered; lig- 

 ules pale pink: akenes ragose-tuberculate between the five 

 angles: pappus white, of about twenty distinct, fragile 

 bristles, which are plumose to the base and deciduous. 



Central parts of the Ishind of Santa Cruz, but not common. 



Malacothrix indecoba. Annual, diffuse, forming a mat 

 2 — 5 inches deep and twice as broad: leaves very thick and 

 succulent, oblong-lanceolate, pinnately lobed, the lobes ob- 

 tuse : involucre 3 lines high, inner series of scales linear- 

 lanceolate, herbaceous and green, the outer successively 

 shorter and purple: ligules short, greenish yellow: akenes a 

 half line long, 5-angled and 2— 3-striate between the angles: 

 pappus with no exterior bristle, wholly deciduous in a ring, 

 the bristles barbellate above, ciliolate below the middle: 

 receptacle naked. 



Malacothrix squalida. Annual, 8 — 12 inches high, with 

 stout branches from near the base: leaves not succulent, 

 lanceolate, laciniate-pinnatifid, the segments and their teeth 

 acute: involucre a half inch high, its imbricated scales pale 

 green with dark midveins and tips : akene less than a line 

 long, angled and striate as in the preceding: pappus wholly 

 deciduous in a ring, the bristles retrorsely ciliolate at base, 

 barbellate-scabrous above: receptacle with minute paleae. 



The two plants above described inhabit together two or 

 three execrable islets, nesting places of innumerable cormor- 

 ants and gulls, close by the northern shore of Santa Cruz Is- 

 land. Similar as to the technicalities of akene and pappus, 



