BIDENS.—ANTHEMIS. 169 
11. (24.) Brpens Linn. 
1. B. tripartita (L.); 1. stalked 3-partite, segments lanceolate 
serrate, fr. obovate-cuneate usually with 2 bristles.—E. B. 1113. 
—St. 1—3 feet high, with opposite branches. L. narrowed into 
winged footstalks, sometimes undivided, sometimes pinnate-5-fid. 
Heads terminal, solitary, slightly drooping. Florets brownish- 
jolene radiata; with radiant 3-toothed marginal florets.— 
arshy places. A. VIII. IX. 
2. B. cernua (L.); 1. sessile connate lanceolate undivided ser- 
rate, fr. cuneate usually with 3—4 bristles —H#.B.1114.—St. 1—3 
feet high, with opposite branches. L. simple, narrowed below but 
not stalked. Heads terminal, solitary, droopmg. Florets brown- 
ish-yellow.—8. radiata ; with radiant marginal florets. Coreopsis 
Bidens (L.) St. 1. 16.— Watery places. A. VIII. IX. 
Section 2. ANTHEMIDEA. Heads usually heterogamous, 
ray female or neuter. Anth. without appendages. Branches of 
the style truncate, bearded, very rarely terminated by a cone. 
Pappus often wanting or crownlike, rarely formed of scales or 
capillary hairs. 
12. (21.) Anroemis Linn. 
* Scales of the receptacle lanceolate or oblong terminating in 
an acute rigid point. 
1. A. arvensis (L.); receptacle conical, fr. tetragonal, 1. bipin- 
natifid hairy, segments linear-lanceolate.—E. B. 602. St. 27.16. 
—St. 1—2 feet high, striated, downy, much branched. Segments 
of the 1. parallel and at length converging. Heads on long stalks, 
solitary, terminal ; disk convex, bright yellow; ray white, always 
having styles. Scales just appearmg above the florets of the 
disk, lanceolate. Outer fr. crowned with a tumid plicate-rugose 
ring, inner with an acute margin.—Borders of cultivated fields, 
yare. A. VI. VII. Corn Chamomile. 
+2. A. tinctoria (L.); receptacle hemispherical, fr. tetragonal 
crowned with a membranous undivided border, 1. bipinnatifid 
downy beneath, segments parallel decurrent serrated, ray shorter 
than the breadth of the disk —£. B. 1472.—St. 1—2 feet high, 
much branched, cottony. L. green, rough or hairy above, cot- 
tony and white beneath. Heads on long stalks, solitary terminal, 
disk and rays bright yellow. Scales not protruding.—Fields 
and stony places, rare. B.? VII. VIII. E.S. 
+3. A. anglica (Spr.); receptacle flat, fr. crowned with a very 
narrow entire border, 1. pinnatifid somewhat hairy, lobes incise- 
serrate acute bristle-pomted rather fleshy—A. maritima Sm., 
E. B. 2370.—St. prostrate, branched, downy. Involucre downy. 
I 
