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Vascular Plants of California
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Lomatium marginatum


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 marginatum (Benth.) J.M. Coult. & Rose
NATIVE
Habit: Plant 1.5--5 dm, glabrous to minutely scabrous; taproot slender. Stem: +- 0. Leaf: petiole generally 3--8 cm, narrowly sheathing throughout, generally +- purple; blade 5--20 cm wide, triangular-ovate to obovate, 1--3-ternately or ternate-pinnately dissected, segments 0.5--8 cm, thread-like or linear, pointed. Inflorescence: peduncle 1--4 cm; bractlets 0--5, 1--5 mm, thread-like to lance-linear, entire, +- scarious-margined; rays 6--12, spreading to ascending. Fruit: 8--12 mm, narrowly ovate to obovate, glabrous; wings thin, < body in width; oil tubes obscure.

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 marginatum, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=31434, accessed on April 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 16, 2024.

Lomatium marginatum  
var. marginatum
click for enlargement
©2010 Vernon Smith
Lomatium marginatum  
var. marginatum
click for enlargement
©2022 Neal Kramer
Lomatium marginatum  
var. marginatum
click for enlargement
©2012 Aaron Schusteff
Lomatium marginatum  
var. purpureum
click for enlargement
©2009 George W. Hartwell
Lomatium marginatum  
var. purpureum
click for enlargement
©2009 George W. Hartwell

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Geographic subdivisions for Lomatium marginatum:
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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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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).