Artemisia. COMPOSITiE. 425 



tains, (Wind River Chain, at the altitude of 7000 feet, Lieut. Fremont!) and 

 the Snake Country, Mr. Tolmie, {Hook. 8^ Am.) Juiy-Aug. — Stems dif- 

 fuse, 8-12 inches high. 



A. Chinensis (or rather A. lagocephala, Fisch.) a plant of Siberia and Kamtsch- 

 katca, is probably incorrectly given by Pursh as a native of the North West Coast 

 of America. 



Div. 4. Hip FIE IE, Less. — Receptacle naked. Heads monoecious; the 

 pistillate flowers in the margin, the staminate in the centre. Style of the 

 sterile flowers simple, truncate. Pappus none. 



157. SOLIVA. Ruiz <^ Pav. prodr. p. 113, t. 24; R. Br. in Linn, trans. 

 12. p. 101; DC. prodr. 6. j}- 142. 



Heads many-flowered ; the fertile flowers in several series, apetalous or 

 nearly so ; the staminate few in the centre, with a 3-6-toothed corolla. 

 Scales of the involucre 5-10, in a single series. Receptacle flat, naked. 

 Achenia obcompressed, with winged or callous margins, armed with the per- 

 sistent rigid style, destitute of pappus. — Small depressed herbs (chiefly South 

 American) ; with petioled pinnately divided leaves, and small sessile or 

 rarely pedunculate heads. 



1. S. nasturtiifolia {DC.) : very low and depressed; leaves on short pe- 

 tioles, pinnately parted; the lobes 3-4 on each side, obtuse, entire; heads 

 sessile; achenia cuneiform, villous at the apex, the callous margin tubercu- 

 late-rugose throughout. DC. prodr. 6. p. 142. Gymnostyles nasturtiifolia, 

 Juss. in ann. mus. A. p. 262, t. 61,/. 2. G. stolonifera? ISutt. ! gen. 2. p. 

 185; Ell..' sk. 2. p. 473. 



Damp sandy soils, in South Carolina, near the coast: perhaps introduced. 

 This species is a native of Buenos Ayres, where it was collected by Commer- 

 son. — HI Ell. (Feb.-May.) Angles of the achenium somewhat produced 

 into spreading teeth. 



2. S. daucifolia (Nutt.) : hirsute-pubescent, diffuse ; leaves bipinnately di- 

 vided ; the divisions crowded, mostly 3-parted ; the lobes linear, acute ; heads 

 sessile; achenia obovate, minutely hairy throughout, slightly margined, even, 

 minutely 2-toothed at the summit; the tepth incurved. — Null.! in trans. 

 Amer. phil. soc. {n. ser.) 7. p. 403. 



Dry grassy downs within the limits, and in the immediate vicinity of 

 St. Barbara, California, Nuttall! — About 2 inches high. Annual, accord- 

 ing to Nuttall. 



Subtribe 7. Gnaphalie^, Less., DC. — Heads homogamous or hetero- 

 gamous, discoid; the flowers all tubular ; the pistillate mostly filiform. An- 

 thers caudate at the base ! Style in the perfect flowers with the branches 

 not appendiculate ; in the staminate mostly undivided. Pappus composed 

 of capillary or setaceous bristles, or sometimes none. — Leaves mostly alter- 

 nate. 



VOL. 11. — 54 



