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green slender lupine, slender lupine

Habit Herbs, perennial, 2–8 dm, green, puberulent to hairy.
Stems

erect or slightly spreading, clustered, unbranched or branched distally.

Leaves

cauline;

stipules 10–15 mm;

proximal petioles (3–)5–14 cm, distal ones (1–)2–4 cm;

leaflets 5–8, blades 35–80 × 2–5 mm, adaxial surface pubescent.

Racemes

6–20 cm;

flowers in 4–8 distinct whorls.

Peduncles

6–12 cm;

bracts semideciduous, 4–10 mm.

Pedicels

2–4 mm.

Flowers

8–18 mm;

calyx bulge or spur 0–1 mm, abaxial lobe 2 or 3-toothed or entire, 5–7 mm, adaxial lobe 2-toothed, 7 mm;

corolla blue, banner patch white to yellowish, banner glabrous abaxially, lower keel margins glabrous, adaxial keel sparsely ciliate.

Legumes

2–3 cm, densely hairy.

Cotyledons

deciduous, petiolate.

Seeds

6–8.

Lupinus gracilentus

Phenology Flowering Jul–Sep.
Habitat Open moist sites, subalpine for­ests.
Elevation 2500–3500 m. (8200–11500 ft.)
Distribution
from FNA
CA
[BONAP county map]
Discussion

Lupinus gracilentus is known from the southern Sierra Nevada (Rock Creek) in Inyo and Mono counties northward to Yosemite National Park.

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

Source FNA vol. 11.
Parent taxa 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. 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. 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
Name authority Greene: Proc. Acad. Nat. Sci. Philadelphia 44: 365. (1893)
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