LEGUMINOSiE. CLXXIV. Orobus. CLXXV. Platystylis. 



341 



bose stigma ; legumes compressed, somewhat elliptic, irregularly 

 and reticulately veined, "2/ . H. Native of Algiers, in unculti- 

 vated fields, and of Calabria. O. Siculus, Rafin. O. Rafin^squii, 

 Presl. del. pr. p. 41. Petals elongated, purple. 



Dark-piirple-Rowefed Bitter- Vetch. PI. 1 to 2 feet. 



39 O. saxa'tilis (Vent. hort. eels. t. 94.) stems simple, 



the upper surface. Flowers deep purple, succeeded by long, 

 woolly, compressed pods, each containing 4-5 seeds. 



Silvery Bitter- Vetch. Shrub 5 to G feet. 



47 O. ? America'nus (Mill. diet. no. 9.) stem much branched, 

 frutescent; leaves pinnate, wuth 5-6 pairs of linear-lanceolate 



leaflets, which are tomentose beneath ; legumes compressed, 



weak; leaves with 2 pairs of linear leaflets ; stipulas small, semi- glabrous. T2 . G. Native of Jamaica. Flowers pale purph-, 



disposed in loose terminal spikes. 



American Bitter- Vetch. Clt, 1731. Shrub 3 feet. 



fr sagittate; peduncles 1-flowered, much shorter than the leaves. 



articulated, and bracteolate ; calycine segments lanceolate, nearly 

 equal, shorter than the tube ; legvimes nearly cylindrical, grey. 

 0. H. Native of Provence, on arid hills. D. C. fl. fr. 4. 

 p. 589. Flowers blue and white mixed. 

 Rock Bitter-Vetch. FL June, Aug. Clt. 1820. 



PI. I foot. 



Cult, O'rohus is a genus of very elegant pea-flowering plants, 

 and being all hardy, deserve to be cultivated in every flower 

 border. They thrive best in light soil, and are easily propagated 

 by seeds, or by dividing the plants at the roots in spring. 



40 O. LONGiFOLius (Nutt. gcn. amer. 2. p. 95.^) plant clothed 

 with silky villi ; leaves ternate, and with 2 pairs of leaflets, upper- CLXXV. PLATY'STYLIS (from TrXarvc, platys, broad, and 



trrvXoe, 5i?/Zo5, a style ; in reference to the dilated style, which 

 separates the genus from O'robus). Sweet, fl. gard. 239. 



most ones simple ; leaflets very long, filiform-linear ; stipulas un- 

 divided, ovate-lanceolate, acuminated ; racemes pedunculate, fill- * ^ , . ^ 

 form, shorter than the leaves ; 2 upper teeth of calyx shortest. Lin. syst. Diadelphia^ Decdndria. Calyx campanulate^ 5- 



1/ . H. Native of North America, on the plains of the Missouri. 

 Psoralea longifolia, Pursh. fl. sept. amer. 2. p. 741. Racemes 

 usually solitary. Flowers pale-red. Roots' creeping. 



Long-leajletted Bitter-Vetch. PI. 1 foot. 



41 O.? Di'spAR (Nutt. gen. amer. 2. p. 95.) leaves unequally 



cleft, the 2 upper lobes shortest. Corolla papilionaceous. Sta- 

 mens diadelphous. Style broad, spatulate, villous at the apex. 

 Legumes oblong, many-seeded; seeds nearly globose. — Erect 

 herbs, with semi-sagittate stipulas. Leaves abruptly-pinnate, 

 with few pairs of leaflets. Petioles ending in a bristle. 



pinnate, with 6-8 pairs of linear obtuse leaflets; stipulas simple, 1 P. cyj^n^'a (Sweet, fl. gard. 239.) stem simple, striated; 



ovate ; racemes sessile, twin or tern ; segments of the calyx leaves with 2-3 pairs of approximate, linear-lanceolate, acute 

 equal, the superior indenture, however, more profound and wider leaflets ; stipulas about equal in length to the petioles ; peduncles 

 than the rest; legumes, glabrous. %. H. Native of North Ame- few-flowered, longer than the leaves ; calycine segments lanceo- 

 rica, on arid hills about Fort Mandan. Flowers cream-coloured, late, hardly the length of the tube. %. 11. Native of Eastern 



Caucasus, in subalpine places. O'robus cyanae'us, Stev. in mem. 



soc. cur. rriosq. 4. p. 51. Bieb. fl. taur. suppl. p. 4C4. Flowers 



large, bluish purple. 



^/we-flowered Platystylis. Fl. May, June. Clt. 1823. PI. 1 ft. 



2 P. sEssiLiFOLiA (Swcct. 1. c in a note,) stems simple, 



striated ; leaves with 1 pair of linear-subulate approximate 



leaflets ; stipulas semi-sagittate, subulate, much longer than the 



having the wings longer than the keel. Habit of a species of 



Astragalus. 



Unlike Bitter- Vetch. PI. decumbent. 



'f Species not sufficiently hnoyvn. 



42 O. ? procu'mbens (Mill. diet. no. 11.) stems procumbent ; 



leaves impari-pinnate, tomentose ; outer leaflets largest ; leaflets 

 5 Dairs ' Nafii^o ^r \f«,.," « „i ». \t r*«,,« T^i^«r«>.c, i^^;«.i»f 



5 pairs. 'NatiVe of Mexicorabout Ve^a'c "Flowers bright petioles; peduncles few-flowered, longer than the leaves ; caly- 



purple, disposed in short axillary racemes. Legumes compressed. 



Seeds G, roundish, 



Procumhent Bitter-Vetch. PL procumbent. 



43 O.VENE'Tus(Mill.dict.no.8.fig.t.l93.f.2.)stemssimple; 

 leaves with 4 pairs of ovate acute leaflets ; legumes tumid, con- 

 taining 3-4 roundish seeds ; peduncles 4-flowered. % . H. Na- 



tiveof Germany and Italy. Flowers purple. Perhaps a variety 

 ot 0, vernus. 



^enetian Bitter- Vetch. Fl. March, April. PI. 1 foot. 



44 O. monta'nus (Scop. fl. earn. 2. p. 80. t. 41.) stem simple, 

 striated; leaves with 3-4 pairs of ovate leaflets; racemes 5-6- 



owered, a little longer than the leaves ; legumes glabrous, pur- 

 P^» i/. H. Native of Carniola. Flowers yellowish-white. 

 Perhaps a variety of 0. virnus. 



fountain Bitter- Vetch. PI. 1 foot. 



^ '*5 O. ? cocci'neus (Mill. diet. no. 12.) stems procumbent; 



owers axillary and terminal ; leaves abruptly-pinnate, with 3- 



^^^P^*""?^ of linear villous leaflets, i;. S. Native of Mexico, 



out Vera Cruz. Peduncles short, 3-4-flowered. Flowers small, 



arict succeeded by short taper pods, containing 3-4 small 

 roundish seeds each. 1^ F > 



hast^r ^^*/'^y%«* (Ser. in D. C. prod. 2. p. 380.) stipulas semi- 

 flni ' leaves with one pair of linear-lanceolate leaflets ; 



«^^ers solitary, length of the pedicels. Lodd. bot. cab. 883. 

 cumbTnf ''■^''^^ Bitter-Vetch. Fl. April, May. PL pro- 



46 O 7 ' 



lose- l" * ^^^^ NTEus (Mill. diet. no. 10.) Stems erect, tomen- 

 flowi ^v"^^^ pinnate; leaflets oblong-ovate, silky beneath; 

 ajr"v posed in terminal spikes. Tj . S. Native of Mexico, 



y era Cruz. Leaves with 4-8 pairs of leaflets, hairy on 



cine segments linear, hardly the length of the tube; style jointed. 



spatulate ; legumes narrow. 1/ . H. Native of Tauria, in woods, 

 and about Athens in Greece. O'robus sessilifolius, Smith, fl. 

 greec. t. 692. ex prod. 3. p. 64. O. digitatus, Bieb. fl. taur. 2. 

 p. 153. et suppl. 462.— Buxb. cent. 2. p. 26. t. 38. Flowers 



large, bluish purple. 



Sessile-leqfietted PlatystyWs. Fl. May, Ju. Clt. 1823. PI. 1 ft. 



8 P. stipula'cea; stem erect, angular, branched above; 

 leaves with 2-3 pairs of linear, attenuated, very long leaflets, 

 which are obscurely 3-nerved, and glabrous ; stipulas large, 

 semi -sagittate ; peduncles axillary and terminal, few-flowered, 

 shorter than the leaves ; calycine teeth unequal, lower ones the 

 longest. y..H. Native of Siberia ? O'robus stipulaceus, Hook, 

 bot. mag. 2937. Flowers with a purple vexillum, blue wings, 



and purple keel. 



Large-stipuled Platystylis. Fl. May. PI. 1 foot. 



Cult. Elegant plants, well adapted for the front of flower 

 borders. A light sandy soil suits them best, and they are easily 

 increased by seeds, or by dividing the plants at the roots in 

 spring. 



Tribe V. 



PHASEO LE^ (plants agreeing with Phasdolus in some im- 

 portant characters). Bronn. diss. p. 133. D. C. Icgum. mem. 

 ix. prod. 2. p. 381.— Phaseoli, Adans. fam. 2. p. 325. exclusive 

 of numerous genera. Corolla papilionaceous (f. 47. c. f. 48. b.). 

 Stamens monadelphous (f. 49. a.), but usually diadelphous (f. 

 48. e. f. 47. g.), 9 joined together, and 1 free. Legume many- 

 seeded, dehiscent, continuous, usually subdivided mtcrnally mto 



