883 LA 



Lathyrus, characterized 

 (See, also, Orobiis.) I-:ii 

 ending in a tendril or in 

 ules leafy, large and |'i ■ 

 tary or racemose, on Imi 

 lique-campaniihiti-. ," \-ii 

 shorter; cor(^ll:^ 'l:iil; Mu 

 or a union of iln -•■. iln 

 or roundish, n<ii. l,, i|. w i 

 cate-obovate or hMmii^t, i 



lack of tendrils. 

 if|ually pinnate, 

 "F several; stip- 

 L.'ittate: fls. soli- 

 iii.-les; calyx ob- 



inciirved, obtuse ; stamens dia- 

 delphous (9 and 1) or monodel- 

 phous below: ovary a one-celled 

 pod, several-ovuled; style 

 curved, usually twisted, flattened, 

 hairy along the inner side ; 

 flat or terete, 2-valved, deh 

 cent. 



lahit climbing : Ivs. tendril-bearing. {Latlt'jr 

 B. Annuals: leaflets one pair. 



1. odorAtus. Linn. Sweet Pea. Stem rough-hniry, 

 winged: Ifts, oval or oblong, mueronulate ; sti|mlts 

 lanceolate peduncle 2-4-fid., much lunirer than tbi- Ivs. : 

 fls. in shades of blue, red. yellow ;iiiil wlijti', fragrant, 

 the shield large and showy, i \|i;iiicl. il. sometimes 

 "hooded:" pod 1-2 in. Summer. Sirily, I'..M. i;0.-For 

 culture and varieties, see Sive<t I'm. 



2. Tingitinus, Linn. Tangier Scarlet Pea. Fig. 

 1242. Sts. spreading, winged, glabrous, 3 ft. long: Ifts. 

 linear-lanceolate, obtuse, mueronulate; stipules lanceo- 

 late: peduncle 2-fld., longer than the Ivs. : fls. 1 in. long. 



LATHYRUS 



dark red-purple; shield large, purple, wings and keel 

 bright red: pod 4-5 in. long. June, July. W. Medi- 

 terranean region. B.M. 100. — An earlier annual than 

 the Sweet Pea. and because of its vigor should be kept 

 away from it or it will run it out. 

 BB. Perennials. 

 ( . Lis. with 1 pair of leaflets. 

 D. Stipules narrow. 



3. grandifldrns, Sibth. and Sm. Everlasting Pea. 

 Two-FLOWEKED Pea. Stem winged, 4-C ft. long: Ifts. 

 large, ovate, obtu.se, mueronulate, undulate ; tendrils 

 branched, short ; stipules small : peduncles 2-3-fld., 

 longer than the Ivs.: shield large, obcordate, notched, 

 broad, rose-purple, wings dark purple: pod linear, .'i in. 



,July. S.Eu. B.M. 1938.-Larger vine than 7>.^//i- 

 folius, biit weaker and less rampant. Fls. as large as 

 those of the Sweet Pea. Free-flowering, succeeiiing in 

 any soil, not requiring much light. Adapted to banks, 

 along walk-margins in woods, among strong shrubs, and 

 as a covering for rocks. 



4. sylvestris, Linn. Flat Pea. Stem straggling or 

 climbing, 3-5 ft. long, stout, winged. ^Iii i-n-, ill. . ,, ,p- 

 ing rootstock : Ifts. linear-lanceolate. :i ■ i m-id 

 leafstalk: peduncle 3-6-fld., equalin. in. 

 long; standard rose, with green spot .;, ,; .ings 

 purple at summit; keel greenish: puil lame ..lai. . J-:; in. 

 long. All summer. All Europe, in thickets and rocky 

 places. — Inferior ornamentally to other perennials, but 

 valuable as a forage plant for cattle and for plowing 

 under in a green state as a fertilizer. Grows well on 

 poor, unimproved sandy soil, and is unaffected by frosts 

 and droughts. For garden culture, it may be sown in a 

 seed-bed and transplanted when of suitable size. Its 



seeds in the wild state are said fo 

 be to some degree unhealthful, 

 but in the cultivated form this 

 quality has been bred out. 



5. rotiindiJdlius,Willd. Persian 

 Everlasting Pea. Low-grow- 

 ing, winged species : Ifts. ovate; 

 stipules toothed: peduncles 

 many-fld., longer than the Ivs.: 

 fls. large, rose-pink. June. Rus- 

 sia and the East. B.M. (I.i22.— A 

 species of easy culture, requiring 

 a cool, shady and sheltered posi- 

 tion. Adapted to stony banks. 

 !S. (L. Stbtho7-pi, Baker). Stems 

 nged: Ifts. oblong: peduncle .5-fi-fld.: 

 fls. a mauve-red. S.B.F.G. 333.-A form intermediate 

 between L. latifoHus and L. rolundifolius. A somewhat 

 tender species, said to be 6 weeks earlier than any other. 

 pules broad. 



7. latifdlins, Linn. Everlasting Pea. Perennial 

 Pea. Fig. 1243. Stemwinged,4-8ft.: Ifts. ovate-elliptic 

 or ovate-lanceolate, somewhat glaucous, mucronate, 2-3 

 in. long; tendril branching: peduncle many-fld., longer 

 than the Ivs. : fls. rose, large : pod flat, 4-5 in. long. 

 Aug. Woods of Europe. -This is the common Perennial 

 Pea. and one of the hardiest and most easily cultivated 

 .species, thriving almost anywhere, even among flags and 

 boulders. A rampant grower, it is a good trellis plant, 

 and is adapted as a cover to wild, rough places, where 

 it scrambles over bushes and stones. It succeeds in 

 shade and grows rapidly, but, like all species of Lathy- 

 rus, it is impatient of removal, owing to the size and 

 length of ts roots. Has no place in the border. Its 

 varieties are not clearly defined. Var. 41bus, Hort., the 

 wliiti- form, is acbiptiil to the same uses as the type, and 

 is, b.si.lr-, vaMinbli- to tlorists wanting white flowers in 

 niidsiHiiiiiir. Var. splfendens, Hort., dark purple and 

 red, is said to be the best form of the type, but does not 

 come true from seed. There is a striped form. also. 

 Other trade names are vars. albiildros and grandiflorus. 



8. Hagell&nicus, Lam. Lord Anson's Blie. Stem 

 3-5 ft. long, smooth, angled, somewhat branched: Ifts. 

 ovate or oblong-linear; tendrils branched; stipules cor- 

 date-sagittate, broad: peduncles long, 3-4-fld. : fls. dark 

 purple-blue. June, July. Straits of Magellan. S.B.F.G. 

 II. 344.— A strong-growing, woody, almost evergreen 



