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

Del Norte 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.

narrowly winged, erect to climbing, basally branched 0–several times, 2–8 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.

9–13 cm;

tendrils well developed;

stipules lanceolate, 10–30 × 3–15 mm, sometimes equal to distal leaflets;

leaflets 9–12, scattered, blades lanceolate, 30–50 × 5–15 mm, surfaces glabrous.

Inflorescences

4–10(–13)-flowered, 3–12 cm.

8–12-flowered, 7–10 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.

9–12 mm;

calyx lobes unequal, lateral lobes deltate, shorter than tube;

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

ovary glabrous.

Legumes

30–70 × 4–7 mm.

30–40 × 3–5 mm.

2n

= 14.

= 14.

Lathyrus ochroleucus

Lathyrus delnorticus

Phenology Flowering Apr–Jul. Flowering May–Jun.
Habitat Moist woodlands, clearings, thickets, glades, meadows. Serpentine areas along rivers and creeks in coniferous and mixed evergreen forests.
Elevation 0–1500 m. (0–4900 ft.) 0–1000 m. (0–3300 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
[WildflowerSearch map]
[BONAP county map]
Discussion

Lathyrus delnorticus is restricted to Del Norte and western Siskiyou counties in California, and Curry and Josephine counties in Oregon.

(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. 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. 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
Synonyms L. nevadensis subsp. stipulaceus
Name authority Hooker: Fl. Bor.-Amer. 1: 159. (1831) C. L. Hitchcock: Revis. N. Amer. Lathyrus, 30, fig. 21. (1952)
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