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campo pea, pride-of-California

grass pea, grass vetchling

Habit Herbs perennial, from rhizome, glabrate. Herbs annual, glabrous.
Stems

angled, sprawling, basally branched 0–3 times, 4–30 dm.

not winged, erect or sprawling, basally branched 1–several times, 1–8 dm.

Leaves

5–8 cm;

tendrils well developed;

stipules lanceolate to linear, 10–20 × 2–8 mm, much smaller than leaflets;

leaflets 6–10, scattered, blades ovate to linear, 20–40 × 3–15 mm, surfaces glabrous throughout or sparsely pubescent abaxially.

phyllodic;

tendrils absent;

stipules filiform-linear, 1–2 × 1 mm, much smaller than phyllode, base semisaggitate;

leaflets 0;

phyllodes flattened, linear, and grasslike, 80–140 × 4–10 mm, glabrous.

Inflorescences

6–10-flowered, 4–16 cm.

1- or 2-flowered, 6–10 cm.

Flowers

25–30 mm;

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

corolla deep wine red, banner reflexed against calyx tube, blade much longer than claw, wings equal to keel;

ovary glandular-pubescent.

8–10 mm;

calyx lobes equal, lateral lobes deltate, equal to tube;

corolla crimson, banner erect, blade equal to claw, wings equal to keel;

ovary glabrous or pubescent.

Legumes

50–80 × 5–9 mm.

30–60 × 2–4 mm.

2n

= 14.

= 14.

Lathyrus splendens

Lathyrus nissolia

Phenology Flowering Mar–May. Flowering Apr–May.
Habitat Chaparral. Disturbed areas, grassy mead­ows.
Elevation 50–1500 m. (200–4900 ft.) 50–150 m. (200–500 ft.)
Distribution
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
from FNA
OR; WA; Europe [Introduced in North America; introduced also in n Africa]
[BONAP county map]
Discussion

Morphological similarities between Lathyrus splendens and L. vestitus var. alefeldii (R. V. Bradshaw 1925; C. L. Hitchcock 1952) are such that these two taxa might be considered a parent-offspring species pair worthy of an evolutionary study of factors involved in their origin. Lathyrus splendens is known from the South Coast and Peninsular Ranges.

(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. ochroleucus, L. odoratus, L. palustris, L. pauciflorus, L. polyphyllus, L. pratensis, L. pusillus, L. rigidus, L. sphaericus, 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. 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
Name authority Kellogg: Proc. Calif. Acad. Sci. 7: 90. (1877) Linnaeus: Sp. Pl. 2: 729. (1753)
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