LEGUMINOS^:. CLXXII. LATIHRUS. 



3,33 



14 L. SESSILIFOI.IUS (Tenore, fl. neap. prod, append. 5. 1826.) 

 root tuberous and fibrous ; stems ascending, simple ; leaves 

 with 1 pair of leaflets, without a petiole; leaflets lanceolate- 

 linear, mucronate ; peduncles usually 3-flowered, longer than 

 the leaves; calyx about equal in length to the tube of the co- 

 rolla ; the segments lanceolate and equal ; legumes flat, many- 

 seeded. "H . H. Native of Naples, in Lucania, in hedges. L. 

 attenuatus, Tenore, prod, but not of Viv. Plant glabrous. 

 Corolla blue, with the wings longer than the keel. Style flat, 

 dilated in front, and rather villous. It differs from L, tuberosus, 

 in the leaflets being sessile and linear-lanceolate. 



Sessile-lcajlelled Lathyrus. PL ascending. 



15 L. KOSEUS (Stev. in mem. soc. mosc. 4. p. 51. and Bieb. 

 fl. taur. suppl. p. 466.) plant quite smooth ; stem slender, not 

 w inged ; leaves with 1 pair ? of ovate-roundish leaflets ; tendrils 

 very short ; stipulas small, subulate ; peduncles filiform, longer 

 than the leaves ; calycine teeth acute, superior ones shortest. 

 ]/. . H. Native of Iberia. Flowers beautiful rose-coloured, 

 rather smaller than those of L. tuberosus. 



.Rose-coloured-flowered Everlasting-pea. Fl. Ju. Aug. Clt. 

 1822. PI. cl. 



16 L. GRANDIFLORUS (Sims, bot. mag. 1938.) hairy; stems 

 tetragonal, winged ; leaves with 1 pair of large, ovate, obtuse, 

 waved leaflets ; stipulas small, semi-sagittate, lanceolate ; pe- 

 duncles 2-3-flowered, longer than the leaves ; teeth of calyx 

 acute, longer than the tube ; legumes long, linear, puberulous. 

 y. . H. Native of the south of Europe, in hedges and among 

 bushes. In Sicily, about Palermo and on Mount Etna. Pisum 

 biflorum, Rafin. car. di piant. p. 71. Perhaps L. grandlflorus, 

 Smith, fl. gra;c. t. 698. Flowers very large, rose-coloured, with 

 an emarginate vexillum. 



Great-flowered Everlasting-pea. Fl. June, Aug. Clt. 1814. 

 PI. cl. 



1 7 L. PUS'ILLUS (Ell sketch, car. geogr. 2. p. 223.) tendrils 

 simple ; leaflets 2, linear-lanceolate ; stipulas falcate ; peduncles 

 1 -flowered, elongated. Native of Carolina, at Cooper's River. 



Small Lathyrus. PI. cl. 



* * Leaves with 2-3-4 or more pairs of leaflets. 



18 L. PISIFORMIS (Lin. spec. 1034. but not of Houtt.) plant 

 smoothish ; leaves with 3-4 pairs of oval leaflets ; stipulas un- 

 equally cordate, hastate, with the angles acute, equal in length 

 to the leaflets ; peduncles many-flowered, rather shorter than 

 the leaves ; the 2 upper segments of the calyx short ; legumes 

 linear-oblong, compressed, rather falcate, acute at the apex on 

 the upper suture. %. H. Native of Europe, Siberia, and 

 throughout North America, in the plains. L. maritimus, Begel. 

 fl. bost. ed. 2. p. 262. L. Californicus, Dougl. in bot. reg. 

 1144. L. venosus, Sweet, fl. gard. 2. ser. t. 37. but not of 

 Willd. Begel. fl. bost. ed. 1. p. 167. but not of ed. 2. Pisum 

 maritimum, Rich, in Frankl. 1. journ. ed. 2. append, p. 28. 

 Gmel. fl. sib. 4. p. 7. t. 1. Astragalus Chinensis, Buch. 

 cent. 10. dec. 2. t. 5. Flowers purple. We have followed 

 Dr. Hooker, in his recent publication, in adding the numerous 

 synonymes, but we have some reason to believe that he is per- 

 fectly wrong with regard to some of the species. 



Pea-formed Lathyrus. Fl. June, July. Clt. 1795. PI. cl. 



19 L. CALIFO'RNICUS (Dougl. in bot. reg. 1144.) stems tetra- 

 gonal, glabrous ; leaves glaucous, with 4-5 pairs of ovate-oblong, 

 glabrous, mucronulate leaflets ; tendrils 3-parted ; stipulas semi- 

 sagittate, about the size of the leaflets; peduncles many-flow- 

 ered, about equal in length to the leaves ; root creeping. I/ . II. 

 Native of North California and the north-west coast of America. 

 Flowers purple, elegantly veined, twice the size of those of V. 

 pisiformis or V. mutdbills. Legumes oblong, rather falcate, 

 inflated. 



Californian Lathyrus. Fl. July, Sept. Clt. 1826. PI. cl. 



20 L. MUTA'BIUS (Sweet, fl. gard. 194.) stems flexuous, 

 winged : wings ciliately pubescent ; leaves with 3-4 pairs of 

 ovate, obtuse, glaucescent leaflets ; stipulas semi-sagittate, ovate, 

 acute, angularly toothed at the base ; peduncles many-flowered, 

 shorter than the leaves ; calycine segments ovate-lanceolate, 

 ciliated, unequal, length of tube; legumes convex, narrow, 

 dotted, pubescent. I/ . H. Native of Siberia. Flowers change- 

 able in colour, at first purplish pink, striped with numerous 

 dark purple branching lines, but at length changing to a brown- 

 ish green. Very like L. pisiformis. 



Changeable-fiowered Lathyrus. Fl. June, Aug. Clt. 1825. 

 PI. cl. 



21 L. OCHROLEU'CUS (Hook, in fl. bor. amer. p. 159.) plant 

 quite glabrous ; leaves with 3-4 pairs of broad, oval, or ovate 

 leaflets ; stipulas toothed, broad, semi-cordate, rather hastate, 

 hardly smaller than the leaves, with the angles sometimes acute, 

 and sometimes obtuse ; peduncles many-flowered, about equal 

 in length to the leaves ; the 2 upper calycine segments short ; 

 legumes in an immature state, linear-elongated, acuminated, com- 

 pressed, quite smooth. I/ . H. Native of North America, 

 Hudson's Bay, and from the Red River, in lat. 49 through the 

 whole woody country to Bear Lake, in lat. 66. L. pisiformis, 

 Richards, in Frankl. 1st journ. edit. 2d append, p. 28. Flowers 

 cream-coloured. 



Crea-co/owreJ-flowered Lathyrus. PI. cl. 



22 L. DECAPHY'LLUS (Pursh, fl. amer. sept. 2. p. 471.) plant 

 glabrous or pubescent ; leaves with 4-6 pairs of elliptic, rarely 

 ovate or oblong leaflets ; stipulas small, semi-sagittate, lanceo- 

 late, with the lobe deflexed and about equal in length to the 

 stipulas ; peduncles many-flowered, about equal in length to the 

 leaves ; calyx pubescent, with the superior teeth very short. 

 I/ . H. Native of North America, on the banks of the Saskat- 

 chawan, abundant in bushy places in north-west America. 

 Hook. bot. mag. 3123. Flowers purple. 



Ten-leafletted Lathyrus. Fl. June. Clt. 1827. PL cl. 



23 L. SPECIOSUS ; plant glabrous ; leaves with 4 pairs of 

 broad, elliptic, mucronate leaflets ; stipulas as large as the leaf- 

 lets ; tendrils simple ; peduncles many-flowered, longer than 

 the leaves ; segments of the calyx ovate-lanceolate, upper ones 

 broadest and shortest, all mucronate. I/ . H. Native of 

 Mexico. Flowers purplish-blue, (v. s. herb. Lamb.) 



Shemy Lathyrus. PL cl. 



24 L. JAPONICUS (Willd. spec. 3. p. 1092.) stems acute-an- 

 gular ; leaves with 4 pairs of elliptic, acute leaflets ; stipulas 

 sagittate, stem-clasping, breadth of the leaflets, but shorter ; 

 peduncles many-flowered. If.. H. Native of Japan. L. pisi- 

 formis, Houtt. fl. syst. 8. t. 63. f. 1. but not of Lin. Flowers 

 purple, or rose-coloured. 



Japan Lathyrus. PL cl. 



25 L. VENOSUS (Muhl. in Willd. spec. 3. p. 1092.) stems te- 

 tragonal, not w : inged ; leaves with many pairs of ovate, obtuse, 

 nearly opposite, mucronulate, glabrous leaflets ; tendrils trifid ; 

 stipulas semi-sagittate, ovate; peduncles many-flowered, shorter 

 than the leaves. 7 . H. Native of Pennsylvania, and common 

 throughout the great chain of lakes in Upper Canada ; plentiful 

 on the Red River and the river Winepeg. Oxypogon elegans, 

 Rafin. in journ. phys. aug. 1819. p. 98, but the legume is said 

 to be falciform and the ovary stipitate. Said to be like L. pisi- 

 formis, but the stipulas are much smaller, and the leaflets are 



broader, ovate, and the corolla is larger. Flowers purple, veined. 

 Veiny Lathyrus. PL cl. 



26 L. STIPULA'CEUS (Leconte, in cat. pi. new york, p. 92.) 

 plant quite smooth ; stems acutely tetragonal, hardly winged ; 

 leaves with 3 pairs of elliptic, mucronate leaflets ; stipulas ovate, 

 semi-sagittate, acuminated, large ; peduncles 4-6-flowered, rather 



