Trifolium.] LEGUMINOS^. I3I 



acuminatis denticulatis petiolo longissimo supremis sessilibus, stipulis lineari-lanceolatis 

 acuminatis petiolo adnatis, capitulis conic o-oblongis, calycibus hirsutissimis, dentibus 

 linearibus rectis tubo coroUae longioribus sericeo-plumosis, germine 4-ovulato. (Tab. 

 XLIX.)^nougias, MSS. in Herb. Hort. Soc. 



Caulis erectus, sfrictus, herbaceus, striatus, sesquipedalis ad bipedalem alius, superne subramosiw, 

 subsericeo-hirsutus, pilis erectis, parce foliosus. Folia caulina longissime pedunculata, mprema sessilis, 

 trlfoUolata, foUolis lineari-lanceolatis, acuminatis, subrig-idis, apprcsso-Bericeis, dentioilatis, minute oblique 

 striatis, acutissimis, subpungentibus. Petioli G-S-poUicares. Stipules magnse, petiolo utrinque adnafae, 

 margine anteriore liberie, foliaceae, lineari-lanceolatae, acuminatae, subdenticulatBe ; superiores ktiores, 

 breviores, inferiores augustiores, nonnunt^uam 3 uncias longae, magis acuminatae. Pedunculi termiuales, 

 dense sericei. Capitula 3-pollicaria, compacta, conico-oblonga, multiflora, ebracteata. Flores albi, primum 

 erectij dein, inferiores prsecipue, subpatentes, semper arctc dispositi. Calyx dense sericeo-birsutus. Tubus 

 carapauulatus. Denies lineares, clongati, tubo longiorcs; 2 superiores subbreviores, onuietj recti, pulcherzime 

 sericeo-plumosi. Vexillum superne latum, acutum. Petala Jilamcntaque in tubum subiequale unita. 

 Pistillum : Germen ovatura, 4-ovulatum. Stylus filiformis alarum longitudine. 



Hab. Blue Mountains iu Nortb-Wcst America, in alluvial soils. Fl. June, July. Douglas.— 'hx belgbt, 

 and foliage, and general babit, similar to the preceding, but everywhere clothed with silky hairs, which 

 are most abundant on the upper leaves, peduncles, and especially on the calyces. Both onght to rank 

 near to T. ruhens and angustifolium of the continent of Europe, from which they are distinguished by the 

 characters above given. 



Tab. XLIX. Fig, I, Flower; fig, 2, Corolla; fig. 3, Pistil: — magnified, 



3. T, arvense ; annuum, caule erecto valde ramoso, foliolis spathulato-lanceolatis 

 obtusis, stipulis ovatis longe acuminatis pilosis, capitulis cylindraceis viUosissimis, 

 calycis dentibus setaceis persistentibus corolla longioribus demum patentibus. — Linn. 

 Sp, PL p. 1083. Engl. Bot. t, 944. Mick, Am. v. 2. p. 59, Elliott, Carol v. 2. p. 203. 

 Pursh, FL Am. v. 2. p. 478. De Cand. Prodr. v. 2. p. 190. BigeL FL Bost ed. 2. ;;. 270. 



Hab. Canada. Pursh; Mrs. Percival; Mrs. Sheppard. 



Sect. II. Eutripiiyllum, Ser, 



4. T.pratense; caulibus adscendentibus, foliolis ovalibus obcordatisve, stipulis ovatis 

 membranaceis nervosis seta terminatis, capitulis ovatis densis sub sessilibus, dentibus 

 calycinis setaceis, inferiore reliquis longiore corollfe tubo dimidio breviore. — Linn. Sp. 

 PL p. 1082. Pursh, Fl. Am. v. 2. p. 478. Engl Bot. t 1770. EUiott, Carol v. 2. p. 202. 

 Bigel FL Bost. ed. 2. j>. 271. 



Hab. Canada. Pursh; Mr. Cleghom. Lake Huron, Dr. Todd; and as far north as the Saskatcbawan. 

 Dr. Richardson; Drummond. North -West America, on the Columbia. Dr. Scoukr; Douglas. 



5. T. Pensylvanicum ; caule ramosissimo flexuoso, foliolis ovato-ellipticis obtusis 

 integerrimis, stipulis aristatis, capitulis ovato-cylindraceis solitariis densis, calycis lacinia 

 infima petalis breviore. DC.—Willd. Enum. p. 793. Pursh, FL Am. v. 2. p. 478. De 

 Cand. Prodr. v. 2. p. 196. 



Hab; Plentiful in dry fertile soik, about Sandwich and Amhertsberg, Upper Canada. Donglas.— With 

 this plant I am unacquainted. Pursh and De CandoUe both observe that it is very nearly allied to T. 

 prateTise. It is known in America by the name of Buffalo Clover. 



R 2 



