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Vascular Plants of California
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Lomatium multifidum


Higher Taxonomy
Family: Apiaceae (Umbelliferae)View DescriptionDichotomous Key
Common Name: CARROT FAMILY
Habit: Annual to perennial herb [shrub, tree], generally from taproot. Stem: generally +- scapose, generally ribbed, hollow. Leaf: basal and generally cauline, generally alternate; stipules generally 0; petiole base generally sheathing stem; blade generally much dissected, occasionally compound. Inflorescence: umbel or head, simple or compound, generally peduncled; bracts present in involucres or 0; bractlets generally present in "involucels". Flower: many, small, generally bisexual (or some staminate), generally radial (or outer bilateral); calyx 0 or lobes 5, small; petals 5, free, generally ovate or spoon-shaped, generally incurved at tips, generally +- ephemeral; stamens 5; pistil 1, ovary inferior, 2-chambered, generally with a +- conic, persistent projection or platform at tip subtending 2 free styles. Fruit: 2 dry, 1-seeded halves (= mericarps), separating from each other but generally +- persistent to central axis; ribs on halves 5, 2 marginal, 3 to back; oil tubes 1--several per interval between ribs.
Genera In Family: 300 genera, 3000 species: +- worldwide, especially temperate; many cultivated for food or spice (e.g., Carum, caraway; Daucus; Petroselinum); Bupleurum lancifolium Hornem. is historical garden weed; some toxic (e.g., Conium). Note: Mature fruit generally critical in identification, shape given in outline. Hydrocotyle moved to Araliaceae, Orogenia moved to Lomatium, Sphenosciadium moved to Angelica. Petroselinum crispum (Mill.) A.W. Hill is a waif.
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: LomatiumView DescriptionDichotomous Key


Habit: Perennial herb, from taproot or generally deep-seated tuber, glabrous to tomentose. Stem: 0 or erect, simple or branched; base fibrous or not. Leaf: blade oblong to triangular-ovate or obovate, ternately, pinnately, or ternate-pinnately dissected or compound, segments or leaflets thread-like to wide; old basal leaf sheaths fibrous-persistent or not. Inflorescence: umbels compound, peduncled; bracts generally 0; bractlets generally present, 0 to conspicuous; rays, pedicels spreading to erect, generally webbed at base. Flower: calyx lobes generally 0; petals wide, yellow, white, or purple, tips narrowed; ovary tip projection 0. Fruit: linear to obovate, compressed front-to-back; marginal ribs widely to narrowly thin or thick-winged, others thread-like, wings generally not incurved; oil tubes 1--several per rib-interval; fruit axis divided to base or a corky ridge along the middle of each fruit half. Seed: face flat to concave.
Etymology: (Greek: bordered, from prominent marginal fruit wing) Note: Fruit wing width given as width of 1 wing, not both together.
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
Reference: Feist et al. 2017 Phytotaxa 316:95--98.
Unabridged Reference: Carlson et al. 2011 Aliso 29:105--114; Constance & Ertter 1996 Madroño 43:515--521; Schlessman 1984 Syst Bot Monogr 4:1--55; Matthias 1938 Ann Missouri Bot Gard 25:225--297.
Lomatium multifidum (Nutt.) R. P. McNeill & Darrach
NATIVE
Habit: Plant 3--14 dm, glabrous to puberulent or minutely scabrous; taproot stout, thickened. Stem: base with >= 1 scarious sheaths. Leaf: petiole 3--30 cm; blade 15--35 cm wide, triangular-ovate to round, ternate-pinnately dissected, segments 2--22 mm, 0.5--2 mm wide, linear-oblong; cauline leaves generally few, like basal. Inflorescence: peduncle not glaucous; bractlets several, > to < flowers, linear; rays 10--30, 3--10 cm, spreading. Flower: corolla yellow. Fruit: 12--16 mm, oblong-ovate to elliptic, glabrous; wings thick, << body in width; oil tubes obscure; fertile pedicels generally 5--15 mm, > sterile. Chromosomes: 2n=22.
Ecology: Shallow rocky soils, wooded or brushy slopes, generally conifer forest; Elevation: 600--3000 m. Bioregional Distribution: KR, CaRH, SNH, Teh, SCo, SnGb, SnBr, GB; Distribution Outside California: to western Canada, Baja California. Flowering Time: Apr--Jul
Synonyms: Lomatium dissectum (Nutt.) Mathias & Constance var. multifidum (Nutt.) Mathias & Constance
Jepson eFlora Author: Lincoln Constance & Margriet Wetherwax
Reference: Feist et al. 2017 Phytotaxa 316:95--98.
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Lincoln Constance & Margriet Wetherwax 2023, Lomatium multifidum, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=103317, accessed on April 18, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 18, 2024.

Lomatium multifidum
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©2023 Neal Kramer
Lomatium multifidum
click for enlargement
©2024 Neal Kramer
Lomatium multifidum
click for enlargement
©2024 Neal Kramer
Lomatium multifidum
click for enlargement
©2023 Neal Kramer

More photos of Lomatium multifidum
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Geographic subdivisions for Lomatium multifidum:
KR, CaRH, SNH, Teh, SCo, SnGb, SnBr, GB
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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.
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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.
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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).