Trifolium agrarium. Hop Trefoil. 
TRIFOLIUM Lin. Gen. PI. Diadelphia Decandeia. 
Tlores fubcapimti. Legumen vk ealfee longins, non dehifeens, deciduum. 
Rail Syn. Giti, 23- Herbje flore papilionaceo seu leguminos.;e. 
TRIFOI.IUM agrarium fpicis ovalibus imbricatis: vexillis deflexis perfiftentibus, calycibus nudis, caule 
ereao. Lia. Syjl. Feg. p. 574- 1087. f/. Suecic. 671. 
TRIFOLIUM fpicis ovatis deiiflflimis, ftrepentibus, caulibus diffufis. Haller, bijl. n. 363. 
TRIFOLIUM agrarium. Scopoll FI. Cara. n. 931. 
TRIFOLIUM pratenfe luteum capitulo Lupull vel agrarium. Bauh. pia. 
TRIFOLIUM luteum minimum. Ger.mac.ii%b. Raii Syn. p. Hop-Trefoil. 
Qeder. F/. O. t. 558- 
Hadfott. FI. Angi. ed. 2. p. 328. 
Lightfoot. VI. Scot. p. 409. 
RADIX annua. 
CAULIS palmaris aut dodrantalis, plerumque dittu- 
fus, teres, villofus, ramofus, fruticulofus, 
fepe rubens. 
STIPUL.d^i binae, ovato-acuminatse, ftriatae. 
FOLIA oblongo-cordata, plerumque nuda, nervofa, 
nervis plurimis, reftis, acute ferrata, 
PETIOLI teretes, foliis ipfls paulo breviores. 
PEDUNCULI erefti, nudi, petiolis multo longiores, 
FLORES quadraginta circiter, imbricatim denfiffime 
glomerati, vix manifefte pedicellati, capituli 
majufculi, fubrotundi, primum lutei, demum 
fiifci. 
CALYX : Peri ANTHFUM minimum, membranaceum, 
flavefeens, a corolla tegre diftingueiidum, aut 
feparandum, quinquedentatum, dentibus duo- 
bus fuperioribus breviflimis, tribus inferiori- 
bus fetaceis, pilofis, corolla brevioribus.^, i. 
COROLLA calyce duplo longior, perfiftens, Vexillum 
fuberedtum, nervofum, margine ferratum, 
pera£la fiorefeentia magnitudine augetur, et 
deorfum fleditur ; conniventes, vexillo 
breviores : Carina minima, intra alas, iifque 
brevior, ^g. 2. 
PERICARPIUM : Legumen corolla tedum, mem- 
branaceum, monofpermum, parietibus tenu- 
iflimis, cito corrumpentibus, relida tantum 
futura cum mucrone, fg. 4. 
SEMEN unicum, nitidum, fufeum five aurantiacum. 
Jk- s- 
I ROOT annual. 
? STALK from fix to nine inches In length, generally 
I fpreading, round, villous, branched, a little 
!f hard orlhrubby, often of a reddilh colour. 
I STIPUL.® growing in pairs, oval, pointed, and 
^ ftriated, 
t LEAVES of an oblong heart-fhape, generally fmooth, 
I finely rib’d, the ribs llrait, fharply fawed 
t about the margin. 
i LEAF-STALKS round, and fomewhat fhorter than 
j the leaves themlelves. 
t FLOWER-STALKS upright, naked, much longer 
I than the ieaf-ftalks. 
t FLOWERS about forty, Handing on very fliort foot- 
I ftalks, which are fcarce perceptible, laying 
j very clofe one over the other, and forming 
t largeifli heads of a roundifh fhape, which at 
I firft are yellow, and afterwards brown. 
CALYX: a Perianthium very minute, membra- 
I nous, yellowilh, with difficulty diftinguilhed 
I or feparated from the corolla, having five 
t teeth, of which the two uppermoft are very 
I fhort, the three lowermoft letaceous, hairy, 
t and fhorter than the corolla, fg. i. 
I COROLLA twice the length of the calyx, perma- 
j nent ; Standard nearly upright, rib’d, the 
t edge ferrated, the flowering being over. It 
I becomes encreafed in fize and turns back; 
I Wings clofing, fhorter than the ftandard ; Keel 
t very fmall, within the wings and fhorter 
I ■ than them. Jg. 2. 
f SEED-VESSEL : a Pod covered with the corolla, 
? membranous, containing one feed, the fides 
I being very thin, foon decay, and leave 110- 
4 thing but the future with its point. Jg. 4. 
I SEED fingle, fhining, of a brown or orange colour. 
I A- 5- 
The name of Hop "Trefoil has been with much propriety beftowed on this plant, as the little heads formed by the 
flowers are larger and more refembling the hop than thofe of any of the other fpecies. 
We are carefully to diftinguifh it from the Trifolium procumbens., than which it is in every refpeft larger, and lefs 
procumbent. 
It is by no means an uncommon plant in dry paftures, on the borders of fields, and in gravelly foils ; in fbme 
fields I have obferved it naturally to form a confiderable part of the Farmers crop, which though a fmall one was 
judged to make excellent fodder. 
It is perhaps one of thofe plants which merits the further attention of the Hufbandman. 
June and July are the months in which it ufually flowers. 
ScopoLi doubts, and apparently with great propriety, whether the Trifolium fpadiceum of LinN/Eus be a fpecies 
diftinft from this. 
f 
