MATRICARIA. ARTEMISIA. 177 



16.(17.) Matricaria iJM«. Feverfew. 



1. M. Parthenium (L.) ; I. stalked pinnate, segments ovate or 

 oblong pinnatifid, lobes cut, St. branched, heads corymbose, phyll. 

 linear obtuse, receptacle convex, fr. crowned with a short jagged 

 membrane. — E.B. 1231. — St. erect, 2 feet high, branched, fur- 

 rowed, panicled. Heads in small corymbs terminating the stem 

 and branches ; disk yellow ; ray white. — Waste places, not very 

 common. P. VII. VIII. Feverfew. 



2. M. inodora (L.) ; I. sessile pinnatifid with many capillary 

 pointed segments, St. branched, heads solitary, phyll. lanceolate 

 obtuse, receptacle ovate, fr. rugose and with 2 round glandular 

 dots on the external face ]ust below the elevated entire border. — 

 E. B. 676. — St. erect, 12 — 18 in. high, smooth, angular. L. in 

 very narrow elongated mostly alternate segments " furrowed 

 beneath." Heads solitary, terminating the branches ; margin of 

 phyll. cut and fuscous ; ray white ; disk yellow. Fr. with 3 pro- 

 minent smooth ribs ; intermediate spaces rugose, 2 narrow and 

 internal, 1 broad and external. — (3. M. maritima(L.); segments 

 fleshy linear bluntish convex above, principal ribs keeled beneath, 

 fr. with 2 elongated glandular spots on the external face just 

 below the lobed elevated border. E. B. 979. L. with short 

 crowded mostly opposite segments. " Margin of phyll. pale and 

 entire." Fr. with 3 prominent smooth ribs ; a narrow interme- 

 diate rugose space externally, 2 internal spaces reduced to simple 

 lines. — Fields and waste places. /3. Sea-shore. A. VII. VIII. 



3. M. Chamomilla (L.); 1. bipinnate smooth, segments capil- 

 lary simple or divided, heads solitary, receptacle hollow conical, 

 phyll.linear obtuse. — E.B. 1232. — St. erect,l foot high, branched. 

 Heads on long naked stalks; disk yellow; ray white. — Cultivated 

 and waste ground. A. VI. VII. Wild Chamomile. 



17. (18.) Artemisia iim«. Wormwood. 

 * 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 searious. — 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 di'ooping ovate glabrous hetero- 

 gamous", I. silky with many linear-lanceolate mucronate segments, 

 stem-1. once or twice pinnate with linear segments, st. wandlike 



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