372 KALMIA, LEONTODON. 
10—1. KALMIA. 18. 50. 
latifo'lia , (laurel. E. w. & r. Ju. T?.) leaves long-petioled, scattered, and 
in threes, oval, smooth both sides; corymbs terminal, with viscid hairs. 
3—20 f. 
anguslifo'lia , (sheep laurel. O. J. I?.) leaves in threes, petioled, oblong, 
obtuse, sometimes rusty beneath; corymbs lateral; bracts linear; pe- 
duncles and calyx with glandular hairs. Vari ora/a, taller ; leaves 
broader, sub-ovate. 2 — 3 f. 
17—1. LACTUCA. 49. 53. 
elonga'ta , (wild lettuce. O. y. Ju. $ or 7]..) leaves smooth; lower ones 
runcinate, amplexicaul ; upper ones lanceolate, sessile ; flowers pani- 
cled. 4-6. f. S. 
Exotic. 
sali'va , (lettuce, y. Ju ©.) leaves roundish ; cauline ones cordate ; stem 
corymbed. Var. romana, has oblong, straight leaves, narrowed at the 
base. Var. crispa , has sinuate-crenate leaves, toothed, undulated, cris- 
pid; radical ones hairy on the keel. Var. laciniata , has the lower 
leaves pinnatifid, and the upper ones runcinate. 
13—1. LAM1UM. 42. 39. 
amplexicau'le , (dead-nettle. O. r. Nov. ©.) floral leaves broadly cordate, 
sessile, amplexicaul, crenate ; radical leaves petioled. 6-10 in. S. 
16— 10. LATHYRUS. 32. 93. 
Exotic. 
odoraitus , (sweet pea. J. ©.) peduncles 2-flowered ; tendril with 2 ovate 
oblong leafets ; legumes hirsute. 
latifo'lius, (everlasting pea. Au. 7J..) peduncles many-flowered; tendril 
with 2 lance-ovate leaves ; membranaceous between joints. 
9—1. LAURUS. 12. 27. 
fcen'soin, (spice bush, fever bush. O. g. y. Ap. Tj-.) leaves wedge-obovate, 
whitish sub-pubescent beneath; flowers in clustered umbels; buds and 
pedicels glabrous. 4 — 10 f. 
sas"safras , (sassafras tree. O. y. RI. 1?.) leaves entire and lobed on the 
same plant ; flowers mostly dioecious. 10 — 25 f. 
Exotic. 
camphora'lus , (camphor tree, b.) leaves about 3-nerved, lance-ovate ; pan- 
icle spreading. From Japan. 
13—1. LAVANDULA. 42. 39. 
Exotic. 
spi'ca , (lavender. Au. 7J..) leaves sessile, lance-linear, with revolute mar- 
gins ; spike interruptedly naked. 
3—2. LEERSIA. 4. 10. 
virgin"ica , (white-grass. Ju. y. 7J..) panicle simple; the lower branches 
diffuse ; flowers oppressed, monandrous, sparingly ciliate on the keel. 
2—4 ft. S. 
10—1. LEIOPHYLLUM. 18. 50. 
buxifo'lium , (sand myrtle. E. w. tj.) leaves small, lance-oval, entire, gla- 
brous, lucid, revolute at the margin ; corymbs terminal. 6 — 18 i. 
17— 1. LEONTODON. 49. 53. 
tarax'acum , (dandelion. O. y. Ap. %.) outer calyx reflexed; scape 1- 
flowered, leaves runcinate, with toothed divisions. Introduced. 
