BlDENS C e r n u a . N o d d i n g W a t e r -H e m p -
A g r i m o n y .
BIDENS Linn. Gen. PL S y n g e n e s ia P o l y g a m i a Æ q u a l i s . Recept, paleaceum. Pappus ariftis
ereftis fcabris. Cal. imbricatus. Cor. rarius flofculo uno alterne radiante
inftruäus.
Raii Syn. Gen. 8. H e r b æ f l o r e c o m p o s i t o DispoipE s e m in ib u s p a p p o d e s t i t u t i s
CORYMBIFERÆ DICTÆ.
BIDENS cernua foliis lanceolatis amplexicaulibus floribus cernuis feminibus ereftis. Linn. Syß. Veg.
p. 610.
BIDENS foliis feflilibus ferratis, floribus nutantibus circuipvallatis. Haller Hiß. 120.
BIDENS cernua Scopoli Fl. CarnioLp. 176. n. 2.
CANNABINA aquatica folio non divifo. Bauh. Pin. 321,
VERßESINA pulchriore flore luteo. I. B. II. 1074.
EUPATORIÆ cannabinæ fceminæ varietas altera. Ger. emac. 711.
EUPATORIUM aquaticum folio integro. Parkin/. 596.
VERBESINA minima'. Dillen. Cat. Gifs. 167. et Appt 66. Raii Syn. ed 3. t. 7. f . 2.
Raii Syn. p. 187. Water-Hemp-Agrimony with an undivided leaf.
Hudfon FL Angl. ed. 2. p, 356. •
Ligntfoot FL Scot. p. 463 .
RADIX annua, fibrofa, fibris plurimis, majufculis,
alte defcendentibus.
CAULIS pedalis, bipedalis, et ultra, ere&us, ramofus,
hilpidulus, purpurafcens, rubro punöatus,
inferne teres, fuperne fulcato-ftriatus, rami
oppofiti, fuberefti.
FOLIA opp o fita, in d iv ifa , m o d ic e ■ con nata, o v a to -
lanc eo la ta , p aten tia, ferra ta, utrinqüe laevia.
P EDUN CU LI ftriati.
FLORES e luteo virefcentes, demum cernui, plerum-
que radiati.
\CALYX communis foliaceus, foliolis circiter feptem,
lineari-lanceolatis,ferrulatis,nervofis, reflexis,
corolla longioribus.
COROLLA: P e t a l a e x te r io ra de cem cir c ite r, ob-
lo n g o -o v a ta , a cu tiu fcu la , n itid a , e flavo -v ire f-
centia, a p ic e , in fle x a , lineis paralle lis nigri-
cantibus pi£ta, e x em p ta ma rgine ; F l o s c u l i
in difco numerofi, aequales, h^rmaphroditi,
' infundibuliformes, fla v i; Tubus cy lind rac eu s ,
long itu d in e lim b i feu p au lo lo n g io r, Limbus
campanula tus, quinquedenta tus , dentibus
fub fub re fle xis, fig. 1,2.
STAMINA: F i l a m e n t a q u in q u e ,“ ca pilla r ia ; An-
.t h e r 'al nigrican te s, in tubum la x um coalitas,
fig- 3 -
PISTILLUM: G e r m e n an gu la tum , fu b con icum , al-
Tiidum, ap ic e t ru n catum, fu p erne e q u atu o r
angulis, ariftis qu a tu o r long itu d in e fe re flof-
cu h in ftru& um, ßg. 6.
SEMEN olivaceo-nigrum, obverfe conicum, tetrago-
num, angulis ariftifque retrorfum fcabro ha-
mofis, fig..n.
RECEPTACULUM p ale a c eum Paleis ftrufturae peta-
lorum, lan c eo la tis, long itu d in e flo fculo rum,
. -fig- 5■
IROOT annual, and fibrous, the fibres numerous, large,
branched, running deep.
STA LK from o ne to tw o fe e t h igh o r m o re , u p right ,
b ranch ed , fom ew h at h iip id , p u rp lifh, d o tted
a ' w ith red , b e low rou nd , ab o v e ftriated, the
X branch e s o p p o fite and n e a r ly up right.
6 LEAVES oppofite, undivided, moderately connate,
§ ovato-lanceolate, fpreading, ferrated, and
| fmooth on both fides.
9 FLOWER-STALKS ftriated.
a FLOWERS o f a yellowifh green colour, finally
X drooping, generally radiated,
a CALYX common to all the florets leafy, confifling
9 of about feven leaves, which are of a fliape
Y * betwixt linear and lanceolate, finely fa wed at
? the edge, rib’d, turning back and longer than
* the porolla.
X COROLLA : th e e x te r io r P e t a l s ab ou t ten in num-
a ' ' her, o f an o b lo n g o v a te fh ape, fom ew h at
6 po in ted , an d b en d ing in a t the to p, o f a
jg yellowifh- g re en co lo u r , fhining and ma rked
¥ w ith black ifli parallel lines e x c e p t the ma rg in,
M the F l o w e r s in the c entre num erous , equ a l,
X h ermaph rodite , funnel fhaped and o f a y e l-
X Q I lo w c o lo u r ; the Tube cy lin d r ic a l, the leng th
o f the limb o r a little lo n g e r, the Limb b e ll-
fh aped, h a v in g fiv e t^eth wh ich turn fom e- v wh at b a ck , Jig. 1 , 2. . '
STAMINA: fiv e F i l a m e n t s , v e r y f in e ; A n t h e r s
b lack ifh, fo rm in g a lo o fe tube, Jig. 3.
PISTILLUM: G e r m e n an gu la r, fom ew h at co n ica l,
The genus Bidens of L in n æ u s is chiefly chara&erized by the whitifh,ftruéture cu of t its o f f feeds,a t to p , which furnifhed according ab o v e to w ith its
naipe fhould be furnifhed with two teeth or awns ; to neither of our fo u r Englifh beards o fpecies r awns does p ro c e ed this in g name from however
the fo u r
well accord, as the one has generally three and the other four; the.angles awns are alm o furnifhed ft the le n with g th o fmall f the fharp flow e hooks,r, an d
(a curious objeft for the microfcope) by means of /which they often b flick ele t with to ones little clothes,h ooks ben and din g Mr.b ack L wa i g rd h t , _/%\f o o 6.t
mentions that they have been known fometimes to deftroy SEED the Cyprinus o f a dark o auratus,liv e c o lo or u r ,Gold in v e r Fifb,fe ly co by n ica adherring
l, fo u r
to their gills and jaws.
co rne red , the co rne rs and beards b efe t with
We have two fpecies o f Bidens common in this country, viz. the little tripartita hooks b en and d in g cernua b a ckw a ; rd the , fig.tripartita 7.
is
common on the edge o f almoft every pond, the cernua delights rather to grow in the water itfelf ; in the ditches
about St. George’s-Fields, in the pond adjoining Hornfey-Wood, and in fimilar fituations about London it is
very frequeqtl y met with ; it flowers in the month of September, a month later than the tripartita.
. all other plants it is fubjeft to vary, being fometimes found without its exterior petals ; and fometimes,
p vejy dry feafons, when the fun has exhaled the water from the pond it has grown in, it has been found fo
I awarfiih as not to exceed two or three inches in height ; a plant o f this kind is figured on the plate, fg . 8.
9 RECEPTACLE chaffy, or befet with numerous lan-
¥ ceolate leaves, having the ftrufture of the
® petals, and being as long as the florets, Jig. 5.
U.LENIUS finding it in this ftate, defcribed and figured it in his edition o f R a y ’s Synopjis, as a diflin6l fpecies ;
1 Jif ~*INNÆus, probably relying on his authority, adopted it as fuch in his Species plantarum ; but H a l l e r ,
.? .had feen the plant, very juftly confiders it as only a variety; and Mr. L i g h t f o o t concurs with him in
I 5 r. H u d s o n with his ufual inaccuracy in the fécond edition of his Flora avglica gives it as a variety
J * e dowers of this fpecies have a ftrong and not a very difagreeable fmell, hence they promife to poflefs
J me medicinal powers ; it is faid by L in n æ u s to dye yellow, but not fo powerfully as the tripartita.