ARTEMISIA.—TANACETUM. 173 
17. (19.) Arremist1a Linn. 
* Receptacle hairy. 
1. A. Absinthium (L.); heads drooping hemispherical hetero- 
gamous, 1. silky in many deep lanceolate obtuse segments, outer 
phyll. linear silky, inner roundish scarious.—E. B. 1230.—St. 
bushy, 1—2 feet high. Teads in erect aggregate leafy panicles. 
Floral 1. simple. Florets dull yellow, the outer row female.— 
Waste ground. P. VII. VILL Wormwood. 
* Receptacle naked. 
2. A. campestris (L.); heads drooping ovate glabrous hetero- 
gamous, l. si/ky with many linear-lanceolate mucronate segments, 
stem-l. once or twice pinnate with linear segments, st. wandlike 
procumbent before flowering, phyll. ovate glabrous with a scarious 
margin.—E. B. 338.—Barren st. cespitose. Flowering st. 
slender, 1—2 feet long, ascending when the flowers appear, leafy, 
smooth. Florets yellow, those of disk sterile, mvolucre purplish. 
—Sandy heaths in Norf. and Suff., rare. P. VIII. IX. E. 
3. A. vulgaris (L.); heads ovate heterogamous, /. woolly and 
white beneath pinnatifid with lanceolate acuminate cut and serrated 
segments, phyll. woolly—E. B. 978.—St. 2—3 feet high, erect, 
leafy. Clusters leafy, nearly simple, erect. Fl. few, reddish or 
brownish yellow.— Waste ground. P. VIT.—IX. Mugwort. 
4. A. maritima (L.); heads oblong, florets few all perfect, L. 
downy pinnatifid with linear obtuse segments, phyll. oblong outer 
woolly imner scarious.—E. B. 1706.—St. recumbent or ascend- 
ing, woolly, much branched. Florets reddish-yellow. Racemes 
drooping.—8. A. gallica (Willd.); racemes more dense, heads 
erect. E. B. 1001.—y. A. salina (Willd.); racemes unilateral, 
heads drooping.—Salt marshes. P. VIII. IX. 
[A. cerulescens (L.); heads oblong, florets few all perfect, J. 
hoary lanceolate undivided, those of the barren shoots pinnatifid. 
—E. B. 2426.—Boston and Isle of Wight. Doubtless an error. 
P. VIII. TX.] 
18. (20.) Tanacetum Linn. Tansy. 
1. T. vulgare (L.); 1. bipinnatifid, Its. serrated.—E. B. 1229. 
—Heads in a terminal corymb. Fi. golden-yellow. Fr. with an 
entire crown. St. 2—3 feet high Way-sides. P. VIII. 
Section 3. GNAPHALIEZ. Heads homogamous or hete- 
rogamous, discoid. Anthers with appendages. Branches of the 
styles of the hermaphrodite florets truncate. Pappus pilose or 
setaceous, rarely 0. 
