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Vascular Plants of California
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Myosotis latifolia

BROADLEAVED FORGET-ME-NOT


Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key
Common Name: BORAGE FAMILY
Habit: Annual, perennial herb, or shrub, often bristly or sharp-hairy. Stem: prostrate-decumbent to erect. Leaf: basal and/or cauline, simple, generally alternate, sometimes opposite, especially at base. Inflorescence: cymes, arranged singly or in groups of 2--5, generally coiled in flower, generally elongating in fruit. Flower: bisexual, generally radial; sepals 5, free or fused at least at base; corolla 5-lobed, salverform, funnel-shaped, rotate, or bell-shaped, appendages (often called "fornices") 0 or 5 at top of tube, when present often differentially pigmented, alternate stamens; stamens epipetalous; ovary superior, 4-lobed, style 1, entire or minutely 2-lobed (2-branched). Fruit: nutlets 1--4, when > 1, all similar (often called "homomorphic") or 1 or 2 dissimilar in size and/or shape from the others (often called "heteromorphic"), free (fused), smooth to roughened, prickly or bristly or not.
Genera In Family: +- 90 genera, +- 1600--1700 species: mostly temperate, especially western North America, Mediterranean; some cultivated (Borago, Echium, Myosotis, Symphytum). Toxicity: Many genera may be TOXIC from pyrrolizidine alkaloids or accumulated nitrates. Note: Sometimes still treated in broader sense of TJM2 (e.g., APG IV 2016 Bot J Linn Soc 181:1--20), but recent evidence (Luebert et al. 2016) supports segregation, for our flora, of the families Ehretiaceae, Heliotropiaceae, Hydrophyllaceae, Lennoaceae, and Namaceae.
eFlora Treatment Author: Michael G. Simpson, C. Matt Guilliams, Kristen Hasenstab-Lehman & Ronald B. Kelley
Scientific Editor: Bruce G. Baldwin, C. Matt Guilliams, Kristen Hasenstab-Lehman, David J. Keil, Ronald B. Kelley, Robert W. Patterson, Thomas J. Rosatti & Michael G. Simpson
Genus: MyosotisView DescriptionDichotomous Key


Common Name: FORGET-ME-NOT
Habit: Annual to perennial herb, glabrous to rough-hairy; roots generally fibrous. Stem: decumbent to erect. Leaf: basal generally oblong or oblanceolate; cauline generally linear to elliptic. Inflorescence: generally raceme-like cymes, coiled, in age +- open; bracts 0 (leaf-like). Flower: calyx lobes 5, tube hairs appressed to spreading, hooked at tip or not; corolla salverform or wide-funnel-shaped, generally blue, white, or yellow, appendages prominent or not; stamens included; style generally included. Fruit: nutlets generally 4, +- lens-shaped, smooth, shiny, each with raised outer margin, attachment scar adaxially, at base, small.
Etymology: (Greek: mouse ear, from leaf) Note: Myosotis arvensis (L.) Hill reported from Orange Co., 1938, not persisting.
eFlora Treatment Author: Ronald B. Kelley & Elaine Joyal
Unabridged Reference: Grau 1964 Osterr Bot Zeitschr 111:561--617
Myosotis latifolia Poir.
NATURALIZED
Habit: Perennial herb. Stem: < 70 cm, base woody. Leaf: basal large, ovate; cauline oblong. Inflorescence: bracted at base; pedicel in fruit ascending to spreading, 5+ mm, >= calyx. Flower: calyx 3--6 mm in fruit, tube hairs +- spreading, generally hooked at tips; corolla 5--10 mm diam, salverform, tube 2 × calyx, generally pink turning blue, appendages prominent, yellow. Fruit: nutlets 2--3 mm, > style, wide-ovate, dark brown. Chromosomes: 2n=18.
Ecology: Moist, disturbed, shady places; Elevation: < 460 m. Bioregional Distribution: NCo, CCo, SnFrB; Distribution Outside California: South America; native to northwestern Africa. Flowering Time: Feb--Jul
Jepson eFlora Author: Ronald B. Kelley & Elaine Joyal
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
View the CDFA Pest Rating page for Myosotis latifolia
Weed listed by Cal-IPC

Previous taxon: Myosotis discolor
Next taxon: Myosotis laxa

Botanical illustration including Myosotis latifoliabotanical illustration including Myosotis latifolia


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Citation for this treatment: Ronald B. Kelley & Elaine Joyal 2012, Myosotis latifolia, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=34211, accessed on November 05, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on November 05, 2024.

Myosotis latifolia
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©2015 Barry Breckling
Myosotis latifolia
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©2021 Barry Rice
Myosotis latifolia
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©2022 California Academy of Sciences
Myosotis latifolia
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©2021 Barry Rice
Myosotis latifolia
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©2021 Barry Rice

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Geographic subdivisions for Myosotis latifolia:
NCo, CCo, SnFrB
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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 occurrence).






 

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 Flowering-Fruiting Monthly Counts

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).