AND GENERA OF PLANTS. 425 



§. I. Calocalais, (Decand.) — Involucrum with the external series shorter and 

 unequal Fruit in all the florets similar^ and with a long rostrum. 



Uropappus Lindleyi. Calais Lindleyi, Decand. Prod., Vol. VII., p. 85. 



Hab. On the north-west coast of America. 



Uropappus linear if olius. Calais linearifolius, Decand., Vol. VII., p. 85. 

 Exclude the synonym oi Hijmenonema? glaucutn of Hooker, which appertains 

 to the following genus. 



Hab. This plant I have met with, both at St. Barbara, and St. Diego, Upper California. Obs. 

 Leaves very long and narrow, linear, the lower often irregularly laciniate, or more or less pinnatifid, 

 with slender segments. Flowers yellow and small. Pedicels six inches to a foot long; the stem 

 frequently branched from the base. Pappus of a silvery whiteness, and very shining, the awn 

 much shorter than the paleae. Achenium black, ribbed, and transversely striate, but smooth, and 

 with a longish rostrum ; the fruit all similar. Sepals from eight to twelve, with four or five other 

 shorter external ones. 



Uropappus * grandiflorus; leaves (as in the preceding) long and linear, the 

 lower often laciniately pinnatifid, with filiform segments, the upper entire; at 

 first often tomentosely ciliate at base; stem branching, pedicels very lono-; in- 

 volucrum of ten to fifteen leaves, the outer shorter; achenium slightly striate 

 or lined, scabrous with minute hairs, and with a very long rostrum. 



Hab. With the above, which it wholly resembles, except in the larger capitulum, brown and 

 very slender, scabrous achenium, and the shorter proportion of the bristles of the pappus. Sepals, 

 as in all the other species, lanceolate and acuminate. 



§.. II. *Brachygarpa. — Achenium somewhat attenuated, scarcely rostrate, tratis- 

 verselij rugose; the fruit of the outer series {five or six) hirsute, all deeply stri- 

 ate; the bristles of the pappus as long as the scale. 



Uropappus * heterocarpus; stem short and few-flowered, often scapoid ; leaves 

 long and linear, at first a little hirsute; longer sepals about eight, three or four 

 shorter. 



Hab. St. Diego, Upper California. About half a foot high, with the leaves entire, scarcely a 

 line wide, attenuated at both ends ; pedicel long, resembling a scape. Flowers pale yellow and 

 small. Achenium long and cylindric, but not properly rostrate. Palese straw colour, the bristles 

 distinctly scabrous, and about the same length. 

 VII. — 5 G 



