Lamium amplexicaule (henbit dead nettle) 424 -- purplish fls; uppermost lvs clasping stem; OT blunt

Lamium hybridum (cult-lvd dead nettle) -- similar to L amplexicaule, but uppermost lvs sharply toothed; OT

Lamium maculatum (spotted dead nettle) 423 -- pink-purple fls; roadsides & waste pls.

Lamium purpureum (purple dead nettle) 424 -- pink-purple fls; uppermost lvs short-stalked, blunt teeth; OT

Lamium sp. (dead nettle) Lamiaceae ((5) (5) 2+2 1) Laportea canadensis (wood nettle) Urticaceae (0 5 5 0/0 4 0 1) 071 -- lvs alt Lappula redowskii (western stickseed) Boraginaceae ((5) (5) 5 1 hypo) 399 --

Lappula squarrosa (two-rowed stickseed) Boraginaceae ((5) (5) 5 1 hypo) 399 -- Lapsana communis (nipplewort) Asteraceae/Lactuceae 599 -- AT w/ several lobes at base; yellow heads, 8-12 rays; roadsides & waste pls. Larix decidua (European larch) Pinaceae -- needles to 1.5 inches; more of an upland species; larger cones, to 1.5", scales pubescent

Larix laricina (American larch) Pinaceae -- brnchlts glbrous, oft glaucous, reddish-yellow; lvs to 1.5" obtuse, lt bluish-grn; cones to 3/4", scales shiny, glabrous Lathyrus latifolius (everlasting pea) 275 -- purple or pink; lflts lance or oblong

Lathyrus maritimus (beach pea) 274 -- purple; lflts broad & blunt

Lathyrus ochroleucus (white pea) 274 -- yellowih-white; lflts elliptic or egg

Lathyrus palustris (marsh pea) 275 -- purple; stems winged or not

Lathyrus pratensis (meadow pea) 274 -- br yellow; lflts lanceolate

Lathyrus sp. (pea) Fabaceae (5 5 10 1 perf or unisex; peri) --

Lathyrus venosus (veiny pea) 275 -- purple; lflts broad Lauraceae (laurel) -- Lindera (spice bush); Sassafras (sassafras) Leavenworthia exigua Brassicaceae (4 4 4+2 1) 170 -- Lechea intermedia 142 -- outer seps not reaching much beyond middle of the inner

Lechea maritima (beach pinweed) 141 -- outer seps not reaching much beyond middle of the inner

Lechea minor (lesser duckweed) 141 -- outer seps about as long or longer than the inner

Lechea mucronata (hairy pinweed) 141-- outer seps about as long or longer than the inner

Lechea pulchella 141 -- outer seps not reaching much beyond middle of the inner

Lechea racemulosa 141 -- both conditions as regards sepals

Lechea sp. (pinweed) Cistaceae (3 5 3 1or0) 141

Lechea tenuifolia (narrow-leaved pinweed) 141 -- outer seps about as long or longer than the inner Ledum groenlandicum (Labrador tea) Ericaceae (5 5 10 1) 184 -- Leersia oryzoides (rice cutgrass) Poaceae 690 --

Leersia virginica (white grass) Poaceae 690 -- infl above lvs on somewhat long stem; green over green (no silver mid-rib as in Microstegium) Leiophyllum buxifolium (sand myrtle) Ericaceae (5 5 10 1) -- Lemna gibba (duckweed) Lemnaceae (0 0 1 0/0 0 0 1) 616 -- mottled yellow green/often anthocyanic; rare

Lemna minor (lesser duckweed) Lemnaceae (0 0 1 0/0 0 0 1) 616 -- thallus symmetrical; dark green/anthocyanic

Lemna perpusilla (very tiny duckweed) Lemnaceae (0 0 1 0/0 0 0 1) 616 -- thallus convex on both sides; more or less falcate, obliquely obovate

Lemna trisulca (star duckweed) Lemnaceae (0 0 1 0/0 0 0 1) 616 -- thallus tapering to a long stipe; toothed toward tip

Lemna valdiviana (Valdivia duckweed) Lemnaceae (0 0 1 0/0 0 0 1) 616 -- thallus more oblong; smooth above Lemnaceae (duckweed) -- Lemna, Spirodela, Wolffia, Wolfiella -- repro by vegetative budding in pouches on frond margins Leontodon autumnalis (fall dandelion) Asteraceae/Lactuceae 601 -- fls 1" wide; stalk slender, bearing scales & us forked

Leontodon hispidus (big hawkbit dandelion) Asteraceae/Lactuceae 601 --

Leontodon taraxacoides (little hawkbit dandelion) Asteraceae/Lactuceae 601 -- Leonurus cardiaca (motherwort) Lamiaceae ((5) (5) 2+2 1) 424 -- lilac or pale purple; lvs w 3 ptd lobes

Leonurus marrubiastrum (horehound motherwort) Lamiaceae ((5) (5) 2+2 1) 424 --

Leonurus sibiricus (siberian motherwort) Lamiaceae ((5) (5) 2+2 1) 424 -- Lepidium campestre (field peppergrass) Brassicaceae (4 4 4+2 1) 164 -- fr. with a "stake" in the notch; lvs clasping

Lepidium densiflorum (prairie pepperweed) Brassicaceae (4 4 4+2 1) 165 -- lvs fern-like

Lepidium latifolium (perennial pepperweed) Brassicaceae (4 4 4+2 1) 165 -- AT ellip; fr hairy

Lepidium perfoliatum (clasping pepperweed) Brassicaceae (4 4 4+2 1) 164 -- heart-shaped stem lvs

Lepidium ruderale (stinking pepperweed) Brassicaceae (4 4 4+2 1) 165 -- lvs fern-like but more spreading

Lepidium sativum (garden pepperweed) -- lvs fern-like but least impressive of the 3 species w fern-like lvs

Lepidium sp. (pepperweed) Fabaceae (5 5 10 1 perf or unisex; peri) --

Lepidium virginicum (poor man's pepper) Brassicaceae (4 4 4+2 1) 164 -- fr. with only a small "stake"; lvs not clasping, upper lvs toothed

Leptochloa fascicularis Poaceae 736 --

Leptochloa panicoides Poaceae 737 -- Leptoloma cognatum (fall witch grass) Poaceae 768 -- infl a purplish love grass, 1-fld panicle with long wiry branches; villous in the axils Lespedeza angustifolia (narrow-leaved b.c.) 280-- yllw-white; lflts lng&narrwly oblong; chfly coastal

Lespedeza capitata (round-headed b.c.) 280 -- round-head clusters of yellowish-white fls; lflts elliptical

Lespedeza cuneata (Chinese b.c.) Fabaceae (5 5 10 1 perf/unisex; peri) 281 -- wh mrkd w/ prpl/pnk fls; termnl lflt w muco tip; rdsds

Lespedeza intermedia (wand b.c.) 280 -- purple fls ; lflts elliptical

Lespedeza procumbens (trailing b.c.) 279 -- purple fls; hairy stems

Lespedeza repens (smooth trailing b.c.) 279 -- purple fls; smooth stems

Lespedeza sp. (bush clover) Fabaceae --

Lespedeza stipulacea (Korean b.c.) (5 5 10 1 perf or unisex; peri) 281 -- white marked w/ prpl/pnk fls; lflts notched at tip

Lespedeza striata (Japanese b.c.) (5 5 10 1 perf or unisex; peri) 281 -- pink or purple fls; annual; AD trif; stipules lance-ovate

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