338 



LEGUMINOS^. CLXXIV. Orobus. 



for fattening oxen). Tourn. inst. t. 2l4. Lin. gen. no. 871. 

 D. C. fl. fr. 4. p. 586. D. C. prod. 2. p. S7G. 



LiN. SYST. Diadelphiay Decdndria. Calyx catnpanulate, 5- 

 cleft, the 2 superior lobes shortest. Corolla papilionaceous. 

 Stamens diadelphous. Style slender, linear, villous at the apex. 

 Legume cylindrical, oblong, 1-celled, 2-valved, many-seeded. 



Erect herbs, with semi- sagittate 

 Petioles ending in a short simple bristle. Leaves 



Racemes of flowers 



Fischer's Bitter- Vetch. Fl. May, Jul. Clt. 1827. PI. 1 ft. 



7 O. 



Seeds with a linear hylum. 

 stipulas. 



abruptly pinnate, with few pairs of leaflets 

 axillary, pedunculate. 



§1. 



ovate, lanceolate, or linear. 



of leajli 



QUADRA NGULUS (Spreng. syst. 3. p. 258.) stem 

 simple, quadrangular ; leaves with 1 pair of linear, glabrous 

 leaflets ; stipula's semi-sagittate, setaceous ; peduncles many- 

 flowered; flowers secund. %. H. Native of Sicily. 

 Quadrangular-stemmed Bitter-Vetch. PI. 1 foot. 



§ 2. Leaves with many pairs of hroadish leaflets. Stipulas 

 much smaller than the leaflets. 



8 O. ve'rnus (Lin. spec. 1028.) plant rather pubescent ; stems 

 simple, flexuous ; leaves with 2-3 pairs of ovate-lanceolate, 



sti- 



pairs 

 acuminated, shining leaflets, with rather parallel nerves; 



1 O. LAXiFLORUs (Desf. cor, p. 83. t. 62. ann. mus. par. 12. pulas semi-sagittate, entire; peduncles axillary, many-flowereJ, 



p. 57. t. 8.) plant villous; leaflets ovate, acute, with parallel 



stipulas unequally ovate-sagittate, rather larger than 



'rves 



Native of Europe, in groves, 



south. Sturm, deutschl. fl. 7. with a figure. 



521. Riv. tetr. irr. t. 58. Schmidel, t. 5Q. f. 79. 



the leaflets ; racemes axillary, few-flowered ; calycine segments 



nearly equal, setaceously-subulate, much longer than the tube, many-seeded; style jointed 



but much shorter than the corolla ; legumes compressed, villous, 



many-seeded. %. H. Native of Candia. Flowers violaceous. 



ioo5e;^owercc/ Bitter- Vetch. Fl. May, Jul. Clt. 1820. PI. 1 ft 



2 O. inusuTus (Lin. spec. 1027.) plant hairy ; leaflets ovate, 

 acute, with parallel nerves ; stipulas unequally sagittate, lan- 

 ceolate, about the size of the leaflets; racemes axillary, few- 

 flowerdd, longer than the leaves ; calycine segments nearly 

 equal, setaceously-subulate, much longer than the tube, but 

 much shorter than the corolla ; legume compressed, hairy. 

 1/ . H. Native of Thrace. Sims, bot. mag. 2345. Buxb. cent. 

 9. p. 22. t. 41 • Flowers red or purple. 



Var. ft, glahriusculus (Ser. mss. in D. C. prod. 2. p. 376.) 

 stems, leaves, and peduncles quite smooth ; calyx 2)ilose. 1/ . H. 

 Native of Tauria, 



FL May, June. Clt. 1822. PI. 1 ft. 



shorter than the leaves ; flowers secund, nodding ; calycine seg 

 ments broad, hardly the length of the tube, lower ohe longest; 

 legumes rather compressed, obliquely and reticulately veined, 



seeds roundish, smooth. ")/.H. 

 in many parts, particularly in the 



Curt. bot. mag. 



Flowers 



the upper 



Hairy Bitter- Vetch. 



3 O. FORMosus (Stev. mem. soc. mosq. 4. p. 50, 

 trans. 11. p. 413. t. 36.) plant quite smooth ; leaflets ovate, mu- 

 cronulate ; stipulas small, 



with 



handsome, singular in the different shades of colour, 

 part of the vexillum is purple, with blood-red veins ; the wings 

 blue, and the keel is blue tinged with green ; the colours change 

 as the corolla advances, and becomes blue. The roots are black. 



Var. /3, ruscifoUus (Ser. mss. in D. C. prod. 2. p. 377.) leaflets 

 stiff, elongated, taper-pointed. O. ruscif olius, Willd, in herb. 

 Desf. ex Poir. suppl. 4. p. 203. 



Far. y,flaccidus (Ser. mss. in D. C. 1. c.) leaflets very narrow 

 and flaccid, % . H. Native of Croatia and Switzerland. 



Spring "B'Mtex-Veieh. Fl. Mar. April. Clt. 1029. Pl.|tolit. 



9 O. VENOsus (Willd. herb, ex Link. enum. %5Q.) stem sim- 

 ple ; leaves with 2 pairs of lanceolate, taper-pointed leaflets, 



racemes few- 



diverging nerves ; 



semi-sagittate, 

 peduncles axillary, usually 2-flowered, 

 longer than the leaves ; calycine segments lanceolate, length of 

 tube, but mucli shorter than the corolla; legumes lanceolate, 

 glabrous. %. H. Native of the alps of Caitcasus. Corollas 

 beautiful purple, about the size of those of 0. vermis. 



Var. (i, microphyllus (Ser. mss. in D. C. prod. 2. p. 377.) 

 leaflets rotindish, much smaller ; stipulas hardly toothed. *}/ , H. 



Lin. soc. with divaricate veins ; stipulas semi-sagittate ; 



flowered. % . H. Native of Siberia.— Gmel. fl. sib. t. 5. f. 1' 

 te, denticulated, Flowers blue and veined with purple. 



Beautiful 



FL May, Jul. Clt. 1818. 



Teiwy-flovvered Bitter-Vetch. Fl. May, Ju. Clt. 1820. PU «. 



10 O. alpk'stris (Waldst. et Kit. hung. 2. p. 133. i-W 

 plant glabrous ; stems angular, simple ; leaves with 2-3 pairs 

 of oblong-lanceolate, acuminated leaflets, with somewhat parallel 

 nerves; stipulas semi-sagittate, entire, or toothed ; peu|i»^^ 

 axillary, many-flowered, about equal in length to or a little *^"8^ 

 than the leaves : flowers secund, nodding ; calycine segmen^ 



Pl.i 



ft. 



broad, hardly the length of the tube ; legumes rather compres- 

 4 O. LATiiYRoiDEs(Lin. spec. 1027.) plant smoothish ; leaflets sed ; style hooked ; seeds roundish, brown. %. H. ^^J'^^!l 



Flowers purple, having the vexillurti veined ^^^n 



ovate, mucronate, with divaricate nerves ; stipvdas semi-sagit- 

 tate, a little toothed, smaller than the leaflets ; peduncles many- 

 flowered, axillary, about equal in length to the leaves ; calycine 



seeded. 



Hungary 



crimson, fading to blue. 



PI. 1 to 



2 ft. 



7/.. H. Native of Siberia. 

 Stems branclied a little. 



Amm. ruth. 151. t. 7. f. 2. 



An elegant 



Flowers crowded, of a beautiful blue 

 colour, usually S or 4 racemes standing together, 

 plant, with broad, shining leaflets and black roots. 



Lathyrus-likc Bitter- Vetch. Fl. Ju. Jul. Clt. 1758. PI. 1 to 2 ft. 



5 O. SESsiLiFLORUs (Smith, in Rees' cycl. vol. 85.) root creep- 

 ing, branched ; stems weak, undivided, ahgular, but not winged ; 

 leaflets narrow, almost linear, nearly sessile ; stipulas very 

 narrow, semi-sagittate, entire ; racemes few-flowered. !/• H. 

 Native country unknown. Flowers purple. 



Sessile-fonered Bitter- Vetch. PI. 4 to 1 foot. 



6 O. Fische'ri (Sweet, fl. gard. t. 289.) stem tetragonal, almost 

 Simple, smoothish ; leaflets linear, bluntish, mucronulate, nerved 

 lengthwise, rather silky beneath ; stipulas linear, acute, a little 

 toothed, with one auricle at the base; racemes pedunculate, 

 many-flowered; flowers secund; legumes reticulately veined, 

 G-7-seeded. 7/. H. Native of Siberia. O. atrbpurpiireus, 

 Fisch. in litt. but not of Desf. Flowers large, beautiful purple. 



^/l? Bitter-Vetch. Fl. June,. Jul. Clt. 1817. 

 HO. multifl6rus (Sieb. in fl. 1821. p. 97.) ^tem Y?- 

 simple ; leaves with S-4 pairs of ovate, acuminated leatle ^ 

 stipulas semi-sagittate; peduncles elongated, incurved, J^^^- 

 flowered. %. H. Native of Italy, near Naples. Flowers 

 pale red, about the size of those of O. niger. a 



Many -flower edWxiiex'N etch. Fl.My.Jul. Clt.1820. ^^'^yIL 

 12 O. variega'tus (Tenore, prod, suppl. 1. p- 62. and ^^ • 

 1819. p. 57. fl. neap. t. 68. but not of Lapeyr.) plant pilose, 

 stems simple, JBexuous; leaves with 2-3 pairs of lanceola ^ 

 acuminated leaflets, with parallel nerves ; stipulas ovate, semi 

 sagittate, quite entire, acute, much smaller than the leaflets, 

 calycine segments narrow, acute, length of tube ; legumes com- 

 pressed, nerveless, dotted ; style straight. If . H. Native near 

 Naples, in woods. Column, phytob. p. 59. with a figu^^- j 

 serotinus, PresU according to Gussone in litt. Flowers p"T? ^ 

 and variegated. . 



ranV^ra^^-rf-flowered Bitter-Vetch. Fl Ju.Jul. Clt.1821. Vl}^' 

 13^0. ViciolDEs (D. C. prod. 2. p. 377.) plant smoothjshJ 



iJrsnf ovate-lanceolate, 



i 



Stems 



r 



