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46. COMPOSIT.E. 
dots on the external /ace just below the elevated entire border. — 
E. B. 676. Matricaria l)C. — St. erect, 12 — 18 in. high, smooth, 
angular. L. in very narrow elongated mostly alternate segments 
“ furrowed beneath.” Heads solitary, terminating the branches, 
ray white, disk yellow. Fr. with 3 prominent smooth ribs, the 
intermediate spaces rugose, 2 of them narrow and internal, 1 
broad and external. — A maritime form of this is often taken for 
the next species. — Fields and waste places. A. VII. VIII. 
3. P . maritimum (Sm.); 1. sessile doubly pinnate, segments 
fleshy linear entire bluntish convex above, principal ribs keeled 
beneath, st. branched diffuse, heads solitary, involucral scales 
lanceolate obtuse, fr. slightly rugose and with 2 elongated glan- 
dular spots on the external face just below the lobed elevated 
border. — E. B. 979. — St. mostly procumbent, reddish. L. with 
short crowded mostly oj)j)osite segments. Heads as in P. ino- 
dorum. Fr. with 3 })roniinent smooth ribs with a narrow inter- 
mediate rugose space externally but the 2 internal s])aces reduced 
to simple lines separating the ribs. — Sea-shores. P. VII. VIII. 
17. (19.) Matricaria Zmra. 
I. M. Chamomilla (L.); 1. bipinnate smooth, segments capil- 
lary simple or divided, heads solitary, receptacle hollow, involucral 
scales linearobtuse. — E. B. 1232. — St. erect, 1 foot high, branched. 
Heads on long naked stalks, disk yellow, ray white. — Cultivated 
and waste ground. A. VI. VII. Wild Chamomile. 
18. (23.) Artemisia Linn. 
* Receptacle hairy. 
1. A. Absinthium (L.); heads drooping hemispherical hetero- 
gamous, 1. silky in many deep lanceolate obtuse segments, outer 
involucral scales linear silky, inner rouuchsh scarious. — E. B. 
1230. — St. bushy, 1 — 2 feet high. Heads in erect aggregate 
leafy panicles. Floral 1. simple. Florets dull yellow, the outer 
row female. — Waste ground. P. VII. VIII. Wormwood. 
** Receptacle naked. 
2. A. campestris (L.) ; heads droojiing ovate glabrous hetero- 
gamous, 1. silky with many linear-lanceolate mucronate segments, 
stem 1. once or twice pinnate with linear segments, st. wandlike 
procumbent before flowering, inv. scales ovate glabrous with a 
scarious margin. — E. B. 338. — Barren st. caespitose. Flowering 
st. slender, 1 — 2 feet long, ascending when the flowers ap]iear, 
leafy, smooth. Florets yellow, involucre purplish. — Sandy heaths 
in Norf. and Suff., rare. P. VIII. IX. E. 
3. A. vulgaris (L .) ; heads ovate heterogamous, 1. woolly and 
