182 



LEGUMINOS/E. LXX. TRIFOLIUM. 



J'ar.ft, Bce'lictim (Ser. mss. in D. C. prod. 2. p. 193.) plant 

 smoothish ; stipulas very long ; calycine segments ciliated. 

 Native of Spain. T. Boe'ticum, Lag. ex Balb. in litt. 



Xaturd's Trefoil. PL 1 foot. 



30 T. CIXCTUM (D C. cat. hort. monsp. p. 152.) stems erect, 

 pilose, a little branched ; leaflets oval-oblong, villous ; stipulas 

 broad, nerved, the two upper ones somewhat palmate ; heads 

 ovate, pedunculate ; calyx striated ; the segments unequal, the 

 lower one large, but shorter than the corolla. O- H. Native 

 about Montpelier. Flowers cream-coloured. Vexillum elon- 

 gated, linear, rather acute. Allied to T. maritimum and T. och- 

 roleucum. 



Girded Trefoil. Fl. June, July. Clt. 1820. PL \ to 1 foot. 



31 T. ALEXANDRI'NUM (Lin. amcen. 4. p. 286.) plant smooth- 

 ish ; stems ascending, thick, flexuous ; leaves numerous ; leaflets 

 ovate-elliptic, somewhat denticulated ; stipulas narrow, nerved, 

 about equal in length to the petiole ; heads of flowers terminal, 

 ovate; calyx hardly ribbed, pilose; the segments setaceous and 

 nearly equal, the two superior ones joined at the base, much 

 shorter than the monopetalous corolla ; seeds ovate, compressed, 

 yellow (ex Savi). Q. H. Native of Egypt, about Alexandria. 

 Forsk. fl. segypt. descr. p. 139. Savi, obs. trif. p. 47. 

 Flowers pale-yellow. Forskal says that this trefoil is universally 

 cultivated in Egypt, being the best and indeed the principal 

 fodder for cattle in that country. It is sown only in the recess 

 of the Nile, and where the fields are too high to be inundated 

 by that river they are watered by means of hydraulic engines ; 

 the seeds being committed to the earth while it is wet. The 

 produce is three separate crops, the plants growing each time 

 about half an ell in height. After the last crop the plants die. 

 When this trefoil is wanted for seed, it is sown along with the 

 wheat. Both are gathered at once by the hand, not reaped or 

 mown, and are threshed out together, the trefoil-seed being after- 

 wards separated by a sieve. This species of clover, being so 

 important in its own country, might be worth the notice of 

 British agriculturists. 



Var. ft, ramosum (Ser. mss. in D. C. prod. 2. p. 193.) stem 

 branched ; lower segment of the calyx bi-trifurcate. 



Alexandrian Trefoil. Fl. June, July. Clt. 1798. PL 1 ft. 



32 T. OCHROLEU'CUM (Lin. syst. nat. 3. p. 233.) pilose ; stems 

 ascending, slender ; leaves distant ; leaflets ovate-elliptic, obtuse, 

 or retuse, finely hairy, upper ones narrowest ; stipulas narrow, 

 nerved, much shorter than the petioles, pointed ; heads terminal, 

 ovate-oblong, on long stalks ; calyx ribbed, smoothish ; the 

 segments linear and setaceous, unequal, stiffish, half-spread- 

 ing, much shorter than the corolla, lowest segment very long. 

 ~U . H. Native of Europe, in dry fields. Curt. fl. lond. 6. t. 49. 

 Mart. fl. rust. 35. Jacq. austr. t. 40. Sturm, deutsch. fl. l.heft. 

 16. t. 40. Smith, engl. bot. 1224. T. roseum, Presl. ex Gus- 

 sone, in litt. Flowers cream-coloured. Mr. Curtis recommends 

 this species of trefoil to the notice of the experimental agricul- 

 turist, and thinks it may be a good substitute for the T. repens 

 or T. pratense in certain soils and situations, but we think it in 

 no respect worthy of attention, as an object of culture. 



Var. ft, diclwtomum (Ser. mss.) stem forked at the top ; spikes 

 twin, approximate. 



/ ar. y, hamile (Ser. mss.) plant less villous ; leaflets broad, 

 lower ones emarginate. T. ochroleucum ft. D. C. fl. fr. 4. p. 528. 



Var. <>, ramosum (Ser. mss.) stem much branched. 



CVeawi-coloured-flowered Trefoil. FL May, July. Britain. 

 PL 1 foot. 



33 T. TRICIIOCE'PHALUM (Bieb. fl. taur. 3. p. 212. and suppl. 

 p. 508.) stem ascending, simple, few-leaved; leaflets entire, 

 ovate, or oblong : stipulas broadish, long, much shorter than the 

 petiole ; heads hairy, elliptic, leafy at the base, sessile ; calyx 

 ribbed, glandular, pilose; the segments setaceous and unequal, 



much shorter than the corolla. 7/. H. Native of Caucasus, 

 on the Alps. An intermediate plant between T. ocliruleucum 

 and T. Pain,(micum. Flowers cream-coloured. 

 Hair-headed Trefoil. PI. i foot. 



34 T. CANE'SCENS (Willd. spec. 3. p. 1369.) stems ascending, 

 covered with adpressed hairs; leaflets obovate, emarginate, vil- 

 lous ; stipulas lanceolate-subulate ; heads terminal, large, oblong, 

 nearly sessile ; calyx smooth ; the segments lanceolate and 

 pilose, dilated at the base, lowest one a little longer ; corolla 

 nionopctalous, much longer than the segments. !{.. H. Native 

 of Cappadocia. Sims, bot. mag. 1168. Perhaps a variety of T. 

 Pattnonicwn only. Flowers cream-coloured. 



Canescent Trefoil. Fl. May, June. Clt. 1803. PI. i to 1 

 foot, ascending. 



35 T. PANNO'NICUM (Lin. mant. p. 276.) plant very pilose ; 

 stem simple, straight ; leaflets lanceolate, oblong, acutish, obtuse 

 or refuse at the apex, nearly entire, ciliated ; stipulas narrow, 

 linear, and very long at the apex, length of petiole ; heads ter- 

 minal, pedunculate, ovate-oblong, thick ; calyx ribbed, glan- 

 dular, pilose, the segments setaceous and unequal, much shorter 

 than the corolla. If. . H. Native of the alps of Piedmont. 

 Jacq. obs. 2. p. 21. t. 42. and of Lower Hungary. Flowers 

 white, but when dry yellowish. 



I 'a r. ft, barbiitmn (Ser. mss. in D. C. prod. 2. p. 194.) stem 

 forked ; leaflets lanceolate, acute. T. barbatum, D. C. cat. 

 hort. monsp. 150. Native about Montpelier. 



Pannonian Trefoil. Fl. June, July. Clt. 1752. PL 1 foot. 



36 T. OLY'MPICUM (Horn. mss. Hook. bot. mag. t. 2790.) 

 stem erect, hairy ; leaflets hairy, lanceolate-elliptic, entire ; sti- 

 pulas subulate, sheathing ; spikes of flowers oblong, solitary ; 

 calyx hairy, with the lower tooth equal in length to the tube of 

 the corolla ; vexillum very long. If. . H. Native of Mount 

 Olympus. Flowers yellowish. 



Olympic Trefoil. Fl. July. Clt. 1817. PI. 1 foot. 



37 T. ARME'NIUM (Willd. enum. p. 793.) stems simple, ascend- 

 ing ; leaflets linear-lanceolate, emarginate ; stipulas subulate ; 

 spike dense, oblong-elliptic, solitary ; lower tooth of calyx about 

 equal in length to the tube of the monopetalous corolla. 1 . H. 

 Native of Armenia. Perhaps only a variety of T. Panndnicum. 

 Flowers cream-coloured. 



Armenian Trefoil. Fl. June, Jul. Clt. 1820. PL 1 ft. ascend. 



38 T. SQUARROSUM (Lin. spec. 1082.) stem branched ; upper 

 leaves opposite or alternate, rather pilose ; leaflets lanceolate or 

 oval, rather retuse ; stipulas narrow, smoothish, nerved, rather 

 membranous, ending in a long acumen each ; heads ovate ; calyx 

 ribbed ; the segments unequal, 3-nerved, and ciliated, the lowest 

 segment length of corolla and deflexed ; seeds oval, yellow. 

 O- H. Native of Spain, and of France about Paris. D. C. fl. 

 fr. 4. p. 531. T. dipsaceum, Thuill. fl. par. ed. 2. p. 382 

 Moris, hist. 2. sect. 2. t. 13. f. 1. Flowers white or cream- 

 coloured. 



Var. ft,Jlavicans (Ser. mss. in D. C. prod. 2. p. 194.) flowers 

 pale-yellow. T. sqnarrosum, Savi, obs. p. 65. t. 3. 



Squarrose-headed Trefoil. Fl. June, Jul. Clt. 1640. PL | ft. 



39 T. A'LBIDUM (Rets. obs. fasc. 4. p. 30.) stem diffuse ; 

 leaflets ovate-lanceolate, ending each in a short awn, and with 

 the margins and keel ciliated ; heads nearly globose, but when 

 in fruit ovate ; calycine segments subulate, unequal, adpressed, 

 lower one 3-nerved, and about equal in length to the corolla. 

 O- H. Native of? Flowers cream-coloured. Perhaps only 

 a variety of T. ochroleucum. 



Whitish-Rowercd Trefoil. Fl. June, July. Clt. 1796. PL 

 1 foot. 



40 T. CONICUM (Pers. in Savi, obs. trif. p. 41. 1810.) leaflets 

 obovate, denticulated at the apex, mucronulate; stipulas some- 

 what ventricose, short, obtuse, and triangular at the apex ; heads 



