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Vascular Plants of California
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Ladeania lanceolata

Higher Taxonomy
Family: Fabaceae (Leguminosae)View DescriptionDichotomous Key
Habit: Annual to tree. Leaf: generally alternate, generally compound, generally stipuled, generally entire, pinnately veined Inflorescence: generally raceme, spike, umbel or head; or flowers 1--few in axils. Flower: generally bisexual, generally bilateral; hypanthium 0 or flat to tubular; sepals generally 5, generally fused; petals generally 5, free, fused, or lower 2 +- united into keel (see 3, Key to Groups, for banner, wings); stamens 10 or many (or [1], 5, 6, 7, 9), free or fused or 10 with 9 filaments at least partly fused, 1 (uppermost) free; pistil 1, ovary superior, generally 1-chambered, ovules 1--many, style, stigma 1. Fruit: legume, including a stalk-like base (above receptacle) or not. Seed: 1--many, often +- reniform, generally hard, smooth.
Genera In Family: +- 730 genera, 19400 species: worldwide; with grasses, requisite in agriculture, most natural ecosystems. Many cultivated, most importantly Arachis, peanut; Glycine, soybean; Phaseolus, beans; Medicago, alfalfa; Trifolium, clovers; many orns. Note: Unless stated otherwise, fruit length including stalk-like base, number of 2° leaflets is per 1° leaflet. Upper suture of fruit adaxial, lower abaxial. Anthyllis vulneraria L. evidently a waif, a contaminant of legume seed from Europe. Laburnum anagyroides Medik., collected on Mount St. Helena in 1987, may be naturalized. Ceratonia siliqua L., carob tree (Group 2), differs from Gleditsia triacanthos L. in having evergreen (vs deciduous) leaves that are 1-pinnate (vs 1-pinnate on spurs on old stems, 2-pinnate on new stems) with 2--5(8) (vs 7--17) 1° leaflets, commonly cultivated, now naturalized in southern California. Aeschynomene rudis Benth. , Halimodendron halodendron (Pall.) Voss (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cult. Ononis alopecuroides L. , Sphaerophysa salsula (Pall.) DC. all evidently extirpated. Cercidium moved to Parkinsonia; Chamaecytisus to Cytisus; Psoralidium lanceolatum to Ladeania.
eFlora Treatment Author: Martin F. Wojciechowski, except as noted
Scientific Editor: Martin F. Wojciechowski, Thomas J. Rosatti.
Genus: LadeaniaView Description 

Habit: Perennial herb, unarmed, gland-dotted, glabrous to +- sparsely hairy; rhizomes or roots (or both) woody. Stem: erect, < 7.5 dm, green or yellow toward base. Leaf: palmately compound, cauline; stipules free; leaflets 3[5]. Inflorescence: raceme, axillary, each node with 1 deciduous bract,1--3 flowers; peduncle generally >> subtending leaf. Flower: calyx flaring back, tearing along 1 lateral sinus in fruit; corolla white, yellow, or purple; 9 filaments fused, 1 less so or free; ovary glabrous to hairy, ovule 1, style tip bent, stigma head-like. Fruit: indehiscent, +- spheric. Seed: 1, elliptic to round.
Species In Genus: 2 species: western North America, southern Canada to Mexico. Etymology: (LaDean Egan, b. 1949)
Reference: Egan & Reveal 2009 Novon 19:310--314
Unabridged Reference: Grimes 1990 Mem New York Bot Gard 61:1--114
Ladeania lanceolata (Pursh) A.N. Egan & Reveal
Leaf: petiole 9--21 mm; leaflets 17--33 mm, linear to oblanceolate. Flower: 4--7 mm; calyx 2--2.5 mm; petals white to purple-blue. Fruit: 4--6 mm, papillate-glandular to glandular, +- hairy. Seed: 4--5 mm, smooth, shiny.
Ecology: Alluvial plains, sand; Elevation: < 2500 m. Bioregional Distribution: GB; Distribution Outside California: to central Canada, central United States. Flowering Time: May--Jul
Synonyms: Psoralea lanceolata Pursh; Psoralea lanceolata subsp. scabra (Nutt.) Piper; Psoralidium lanceolatum (Pursh) Rydb.
Jepson eFlora Author: Martin F. Wojciechowski
Reference: Egan & Reveal 2009 Novon 19:310--314
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

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Botanical illustration including Ladeania lanceolata

botanical illustration including Ladeania lanceolata


Citation for this treatment: Martin F. Wojciechowski 2012, Ladeania lanceolata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 27, 2022.

Citation for the whole project: Jepson Flora Project (eds.) 2022, Jepson eFlora,, accessed on May 27, 2022.

Ladeania lanceolata
click for enlargement
© 2011 Steve Matson
Ladeania lanceolata
click for enlargement
© 2011 Steve Matson
Ladeania lanceolata
click for enlargement
© 2011 Steve Matson
Ladeania lanceolata
click for enlargement
© 2011 Steve Matson
Ladeania lanceolata
click for enlargement
© 2011 Steve Matson
Ladeania lanceolata
click for enlargement
© 2011 Steve Matson

More photos of Ladeania lanceolata in CalPhotos

Geographic subdivisions for Ladeania lanceolata:
1. You can change the display of the base map layer control box in the upper right-hand corner.
2. County and Jepson Region polygons can be turned off and on using the check boxes.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).


Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).