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cream pea, cream vetchling, cream-flower peavine, cream-flower sweet pea, creamy peavine, pale vetchling

leafy pea, leafy peavine, Oregon pea

Habit Herbs perennial, from rhizome, glabrous except calyx ciliate. Herbs perennial, from rhizome, glabrous.
Stems

angled, sprawling or climbing, basally branched 0–3 times, 3–8 dm.

angled, erect, sprawling, or climbing, basally branched 0–2 times, 4–8 dm.

Leaves

(2–)3–10 cm;

tendrils well developed;

stipules somewhat foliose, ovate-lanceolate, 15–35 × 5–20 mm, sometimes equal to distal leaflets;

leaflets (5 or)6(–8), usually paired, blades broadly ovate to lanceolate, (20–)25–65 × 10–35(–42) mm, surfaces glabrous.

11–16 cm;

tendrils well developed;

stipules ovate to lanceolate, 20–30 × 10–30 mm, nearly equal to distal leaflets;

leaflets 10–16, scattered, blades ovate to lanceolate, 30–50 × 10–30 mm, surfaces glabrous.

Inflorescences

4–10(–13)-flowered, 3–12 cm.

8–12-flowered, 9–14 cm.

Flowers

10–15 mm;

calyx lobes unequal, lateral lobes lanceolate, usually longer than tube;

corolla cream-white, banner erect, blade longer than claw, wings equal to keel;

ovary glabrous.

15–18 mm;

calyx lobes unequal, lateral lobes linear-triangular, equal to or longer than tube;

corolla blue-purple, banner erect, blade longer than claw, wings equal to keel;

ovary glabrous.

Legumes

30–70 × 4–7 mm.

40–70 × 4–9 mm.

2n

= 14.

= 14.

Lathyrus ochroleucus

Lathyrus polyphyllus

Phenology Flowering Apr–Jul. Flowering Apr–Jul.
Habitat Moist woodlands, clearings, thickets, glades, meadows. Openings in coniferous forests.
Elevation 0–1500 m. (0–4900 ft.) 0–1800 m. (0–5900 ft.)
Distribution
from FNA
AK; IA; ID; IL; IN; MI; MN; MT; ND; NE; NJ; NY; OH; PA; SD; VT; WA; WI; WV; WY; AB; BC; MB; NT; NU; ON; QC; SK; YT
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; WA
[WildflowerSearch map]
[BONAP county map]
Discussion

Lathyrus polyphyllus is known from in and west of the Cascade Range. Lathyrus ecirrhosus A. Heller (1904), not Philippi (1892), is an illegitimate name that pertains here.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lathyrus Fabaceae > subfam. Faboideae > Lathyrus
Sibling taxa
L. angulatus, L. aphaca, L. biflorus, L. brachycalyx, L. brownii, L. cicera, L. decaphyllus, L. delnorticus, L. eucosmus, L. glandulosus, L. graminifolius, L. grimesii, L. hirsutus, L. hitchcockianus, L. holochlorus, L. japonicus, L. jepsonii, L. laetivirens, L. lanszwertii, L. latifolius, L. littoralis, L. nevadensis, L. nissolia, L. odoratus, L. palustris, L. pauciflorus, L. polyphyllus, L. pratensis, L. pusillus, L. rigidus, L. sphaericus, L. splendens, L. sulphureus, L. sylvestris, L. tingitanus, L. torreyi, L. tracyi, L. tuberosus, L. venosus, L. vestitus
L. angulatus, L. aphaca, L. biflorus, L. brachycalyx, L. brownii, L. cicera, L. decaphyllus, L. delnorticus, L. eucosmus, L. glandulosus, L. graminifolius, L. grimesii, L. hirsutus, L. hitchcockianus, L. holochlorus, L. japonicus, L. jepsonii, L. laetivirens, L. lanszwertii, L. latifolius, L. littoralis, L. nevadensis, L. nissolia, L. ochroleucus, L. odoratus, L. palustris, L. pauciflorus, L. pratensis, L. pusillus, L. rigidus, L. sphaericus, L. splendens, L. sulphureus, L. sylvestris, L. tingitanus, L. torreyi, L. tracyi, L. tuberosus, L. venosus, L. vestitus
Synonyms L. nevadensis subsp. stipulaceus
Name authority Hooker: Fl. Bor.-Amer. 1: 159. (1831) Nuttall in J. Torrey and A. Gray: Fl. N. Amer. 1: 274. (1838)
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