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Guadalupe Island lupine

Inyo Meadow lupine

Habit Herbs, annual, 2–6 dm, sparsely pubescent. Herbs, perennial, 3–7 dm, green, hairy.
Stems

erect, usually branched, sometimes unbranched.

erect, unbranched or branched distally, hollow.

Leaves

cauline;

petiole 3–7 cm;

leaflets 7–9, blades 20–50 × 3–5 mm, adaxial surface sparsely pubescent.

basal and cauline, green;

stipules 5–20 mm;

basal petioles 10–25 cm, cauline 1–4 cm;

leaflets 5–10, blades 30–80(–130) × 5–8 mm, adaxial surface strigose, hairs less than 1 mm.

Racemes

10–25 cm;

flowers usually whorled, sometimes spirally arranged.

5–28 cm, usually exceeding leaves;

flowers dense.

Peduncles

5–8 cm;

bracts deciduous, 8–10 mm.

4–17 cm;

bracts persistent, 5–10 mm.

Pedicels

4–5 mm.

1–3 mm.

Flowers

10–12 mm;

calyx 6–10 mm, lobes ± equal, abaxial lobe entire, adaxial lobe deeply cleft;

corolla blue, banner spot white, upper keel margins with few cilia near apex, banner as wide as long or wider.

10–12 mm;

calyx bulge or spur 0–1 mm, abaxial lobe entire, 5–6 mm, adaxial lobe 2-toothed, 4–7 mm;

corolla violet to dark blue, banner patch orange to red, banner usually glabrous abaxially, rarely hairy, lower keel margins glabrous, adaxial margin densely ciliate.

Legumes

3–6 × 0.8–1 cm, densely pubescent.

1.5–2 cm, hairy to woolly.

Cotyledons

deciduous, petiolate.

deciduous, petiolate.

Seeds

6–8.

4–6, brown, mottled tan, 3–4 mm.

Lupinus guadalupensis

Lupinus pratensis

Phenology Flowering spring. Flowering May–Sep.
Habitat Sandy or gravelly areas. Meadows, stream banks, sagebrush scrub to subalpine forests.
Elevation 0–500 m. (0–1600 ft.) 2000–3500 m. (6600–11500 ft.)
Distribution
from FNA
CA; Mexico (Baja California)
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Lupinus guadalupensis is known from San Clemente Island in California and Guadalupe Island in Mexico. It intergrades with L. nanus.

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

Lupinus pratensis is known from the southern Sierra Nevada in Fresno, Inyo, Mono, and Tulare counties. Plants from Big Pine Creek in Inyo County with banners that are hairy abaxially have been called var. eriostachyus.

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

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Lupinus Fabaceae > subfam. Faboideae > Lupinus
Sibling taxa
L. adsurgens, L. affinis, L. albicaulis, L. albifrons, L. andersonii, L. angustiflorus, L. antoninus, L. apertus, L. arboreus, L. arbustus, L. arcticus, L. argenteus, L. arizonicus, L. benthamii, L. bicolor, L. brevicaulis, L. breweri, L. cervinus, L. chamissonis, L. citrinus, L. concinnus, L. constancei, L. covillei, L. croceus, L. dalesiae, L. diffusus, L. duranii, L. elatus, L. elmeri, L. excubitus, L. flavoculatus, L. formosus, L. fulcratus, L. gracilentus, L. grayi, L. havardii, L. hirsutissimus, L. huachucanus, L. hyacinthinus, L. kingii, L. kuschei, L. lapidicola, L. latifolius, L. lepidus, L. leucophyllus, L. littoralis, L. longifolius, L. ludovicianus, L. luteolus, L. magnificus, L. malacophyllus, L. microcarpus, L. nanus, L. neomexicanus, L. nevadensis, L. nipomensis, L. nootkatensis, L. obtusilobus, L. odoratus, L. onustus, L. oreganus, L. pachylobus, L. padrecrowleyi, L. peirsonii, L. perennis, L. polyphyllus, L. pratensis, L. pusillus, L. rivularis, L. sabineanus, L. sericatus, L. sericeus, L. shockleyi, L. sierrae-blancae, L. sparsiflorus, L. spectabilis, L. stiversii, L. subcarnosus, L. succulentus, L. sulphureus, L. texensis, L. tidestromii, L. tracyi, L. truncatus, L. uncialis, L. villosus, L. westianus
L. adsurgens, L. affinis, L. albicaulis, L. albifrons, L. andersonii, L. angustiflorus, L. antoninus, L. apertus, L. arboreus, L. arbustus, L. arcticus, L. argenteus, L. arizonicus, L. benthamii, L. bicolor, L. brevicaulis, L. breweri, L. cervinus, L. chamissonis, L. citrinus, L. concinnus, L. constancei, L. covillei, L. croceus, L. dalesiae, L. diffusus, L. duranii, L. elatus, L. elmeri, L. excubitus, L. flavoculatus, L. formosus, L. fulcratus, L. gracilentus, L. grayi, L. guadalupensis, L. havardii, L. hirsutissimus, L. huachucanus, L. hyacinthinus, L. kingii, L. kuschei, L. lapidicola, L. latifolius, L. lepidus, L. leucophyllus, L. littoralis, L. longifolius, L. ludovicianus, L. luteolus, L. magnificus, L. malacophyllus, L. microcarpus, L. nanus, L. neomexicanus, L. nevadensis, L. nipomensis, L. nootkatensis, L. obtusilobus, L. odoratus, L. onustus, L. oreganus, L. pachylobus, L. padrecrowleyi, L. peirsonii, L. perennis, L. polyphyllus, L. pusillus, L. rivularis, L. sabineanus, L. sericatus, L. sericeus, L. shockleyi, L. sierrae-blancae, L. sparsiflorus, L. spectabilis, L. stiversii, L. subcarnosus, L. succulentus, L. sulphureus, L. texensis, L. tidestromii, L. tracyi, L. truncatus, L. uncialis, L. villosus, L. westianus
Synonyms L. moranii L. pratensis var. eriostachyus, L. sellulus var. elatus
Name authority Greene: Bull. Calif. Acad. Sci. 1: 184. (1885) A. Heller: Muhlenbergia 2: 210. (1906)
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