LEGUMINOSiE. LXX. Trifolium. 



185 



4 



49 T. microphy'llum (Desv. journ. bot. 2. p. 316.) smooth- 

 ish : stems ascending ; leaflets ovate, obtuse or retuse, denticu- 



sheep in spring, and witli this food they will soon be ready for 



the butcher. Afterwards a crop of hay may be got, and in two .... , „ ^ , _ ^, ,,,,,,, ..c.u^u- 



or three weeks after the hay has been taken off, sheep intended lated, superior ones mucronulate ; sti])ulas broadish, nerved, 



to be fattened on turnips may be turned in, and kept there until furnished at the apex with a broad, short, inflexed point ; heads 



tlie turnips are ready for them. ovate, obtuse, sessile; calycine segments pilose, flexible, un- 



Tke nutritive j)roducts of red clover, according to Sir Hum- equal, shorter than the gamopetalous corolla. %. II. Native 



phrey Davy (the quantity analysed 1000 parts) are as follows : of Scandinavia, and about Paris, in dry groves. D. C. fl. fr. 5. 



the whole quantity of soluble or nutritive matter 39 ; mucilage ^' . ^ . . 



I or starch 31 ; saccharine matter or sugar 3 ; gluten 2; extract, 

 or matter rendered insoluble during evaporation, 3. 



p. 356. Flowers purple. Perliaps only a variety of T. pratense. 

 S^nnll-leaved Trefoil Fl. May, July. Clt. 1819. PI. 1 foot, 

 ascending. 



50 T. NoRicuM (Wulf in Room. arch. 3. p. 387.) villous : 



calycine segments filiform, 

 flexile, about equal in length, the lower one much shorter than 

 the carina. 1/ . H. Native of Carinthia. Savi, obs. trif. p. 

 6K Sturm, deutsch. fl. 1. fasc. 16. Allied to T. pratense, but 



and difficulty. Clover will not ripen its seeds if saved for that stem declinate, simple ; leaflets oval-oblong; stipulas smoothish, 



purpose early in the year; therefore it is necessary to take off rather narrow, somewhat lanceolate; heads of flowers subglo- 



tiie first crop either by feeding or with the scythe, and to depend bose, pedunculate and sessil 

 for the seed upon those heads tliat are produced in the autumn. 

 Seed clover turns out to good account in those years when the 



crops are not injured by the blight, which is often fatal to them, „.. , _ ...„_ _ . . ^„„..„„., ... 



or by the rams m the autumn, which sometimes prove their the calyxes are twice the length, and thicker ; and the flowers 



destruction ; for the time of harvesting this seed falling out late, are cream-coloured. 



when rainy weather may be expected, renders it on that account iV^or/c Trefoil or Clover. Fl. July, Aug. Clt. 1821. PI. pr. 



very tedious. The produce in seed may generally be from 3 to 51 T. succinctum (Visiani. ex bot. zeit. March, 1829. p. 21.) 



4 or 5 bushels per acre, when perfectly clean weighing from 2 to plant hairy ; stems ascending; leaflets oval, obtuse, obsoletely- 



cwt. But there is great uncertainty in the produce of clover- denticulated at the apex, upper leaves opposite; stipulas ovate, 



seed troni the lateness of the season at which it becomes ripe; membranous, nerved; heads of flowers ovate, terminal, girded 



ana the fertility of the soil is considerably impaired bv such a by a 10-toothed 1-leaved involucrum ; calyx compressed, nerved 

 crop. Yet the high value of the seed is a great inducement 

 to the saving of it in favourable situations (Dickson's Prac- 

 tical Agriculture, vol. 2. p. 863). The growth of clover re- 

 served for seed should be the second crop, and it should be 



suffered to remain ' - 



at the base, having lanceolate acuminated pilose teeth, th.e lower 

 tooth twice the length of the others. Q. H. Native of Dalmatia. 

 Flowers white. This plant is distinguished from all others of 

 the genus in the form of the involucrum. 



until the husks become perfectly brown. Girt Trefoil. Fl. May, June. 



PI. ascending. 



1 . - "••-•- ti.v, nnoi^o ut-v^uiiit L»ciii;v^Liy uiuwii, 



it T t'l fi ll ^^ ^""^ ^"^ harvested in the usual manner, leaving 52 T. Pennsylva'nicum (Willd. enum. p. 793.) stem much 



on le field tdl it is very dry and crisp, that the seeds may branched, flexuous ; leaflets ovate-elliptic, obtuse, quite entire; 



become more fully hardened ; it may then be laid up dry, to be 



inreshed out at the farmer's convenience. Much labour and ex- 



^nse are necessary in separating the seeds from the husk, esi)e- 



ciaiiy when it is effected by thrashing, which seldom costs less 

 nan trom 5 to 6 or 7 shillings per bushel. By the use of mills 

 iTr '""^y ^^ ''^"^ "^"^^ cheaper. 



tf 



"on or consumption from insects, slugs, and w 



ppens that clover after being repeated at short intervals on 



to a dr^ ^"^'^^ ^""'^^ °^ '^°^^ "^ g"0'^' whether this is owing 

 into th ^^f^' ^^ ^ ^^^(^ct in some peculiar substance which enters 

 tamed A ^^ *'^^ P^^"*' ^^^^ ^^^ appear to be clearly ascer- 

 favoii ' W *°^ ^^''essing with ashes or lime is said to be un- 

 num/^ /" ^^"^^ ' ^"* ^^^'■^ vermin of this sort are very 



in fir?"! ^^^^ '^^'■t^j" remedy is a naked fallow well worked 

 '" the hottest months. ^ 



«'•• a, sativum (Ser. mss. in D. C. prod. 2. p. 195.) tall ; 



stipulas awned ; heads ovate, cylindrical, solitary, dense ; lowei 



segment of calyx shorter than the monopetalous corolla. 11. H. 



Native of North America. Very like T. medium or T. pratSnse. 



Flowers red. 



Pen«*y/t;awiara Trefoil or Clover. Fl. May, Sept. Clt. 1811. 



PI. 1 foot. 



suffoca- 53 T. fimbria^ tum (Lindl. bot. reg. 1070.) stems prostrate, 



It often glabrous ; leaflets oval, smooth, toothed, the teeth setaceous ; 



leaflets 



/3 



heads of flowers on long peduncles ; involucrum shorter tljan 

 the flowers, and are, as well as the stipulas, niultiful ; the seg- 

 ments awned; calyx turbinate, witli the segments pungent, about 

 the length of the tube of the corolla; seeds round, black. 1/ . Fl. 

 Native of North America, in the neighbourhood of the Colom- 

 bia river. Flowers purple. 



7^nw^e?(/-stipuled Trefoil. Fl. Sept. Oct. Clt. 1825. PL 

 prostrate. 



54 T, WoRMSKiOLDi (Lehm. cat. sem. hort. hamb. 1825.) 

 heads of flowers hemispherical, solitary, terminal, girded by an 



heads u^r^*^^'^* (Ser. 1. c.) smoothish; stems filiform; orbicular, jagged, awned involucrum ; wings divaricate, a little 



t,/^ 1^ ^ » *eW"flowered. T. nratense v. Sor. trif. exsic. shorter than the vexillum : leaflets obovate-oblony. nectinatelv- 



no. 19. 

 far 



) 



T nr..*' Y'-"»«cam£Mwj ^^oer. 1. c.) heads on 

 ^- Pratense sativum, Sturm, deutschl. fl. 1. fasc 



shorter than the vexillum ; leaflets obovate-oblong, pectinately- 

 denticulated, mucronate; stipulas broad, fringed. ©. H, Na- 

 tive of Greenland. 



1 t?;l^^°'^ - «^^ Clover. 

 48 T. 



15. 



PI. reclininfT. 



Wormskwldi s Trefoil. 

 _ 55 T. tridenta'tum (Lindl. bot. reg. no. 1070.) stems as- 



cending, nearly simple, glabrous ; leaflets linear, acute, toothed, 

 Fl. May, Sept. Britain. PI- the teeth setaceous ; heads of flowers on long peduncles ; in- 

 volucrum fringed, awned, shorter than the flowers ; upper sti- 

 pulas pectinated ; calyx tubular, the limb dilated and coloured, 

 with the segments tridcntate and awned, shorter than the corolla. 

 7/. H. Native of North America, in the neighbourhood of the 



prostrate ^^\^^^'^^^ (Schleich. cat. p. 51.) plant villous ; stems 

 "^rved • h j^ ovate, obtuse or retuse ; stipulas broad, 



nearly en ^f ^ ^^^^^' obtuse, nearly sessile ; segments of calyx 

 live of Silv ' r^^"^ gamopetalous ; seed reniform. %. 

 yellowish ^^^^^'^^^ """ '"''''"^ Grimsel, and of Vallais. 



Hhtaih AT ^^* 1. CYATHIFERUM (L.mai. J. c.) stcms prosiracc, giaorous ; 



VftT ^""^f^^il- Fl. May, July. Clt. 1819. PL prostrate, leaflets obovate, denticulated, obtuse ; heads of flowers on long 

 ^^- "• B b 



Flowers 



Colombia river. Flowers purple. 



T'rirfew/afc-sepalled Trefoil. PL ascending. 



5(5 T. CYATHIFERUM (Lindl. 1. c.) stems prostrate, glabrous ; 



