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Vascular Plants of California
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Microseris douglasii subsp. douglasii

Higher Taxonomy
Family: Asteraceae (Compositae)View DescriptionDichotomous Key
Habit: Annual to tree. Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. Inflorescence: 1° inflorescence a head, resembling a flower, of several types (see below), 1--many in generally +- cyme-like cluster; each head generally with +- calyx-like involucre of 1--many series of phyllaries (involucre bracts); receptacle of head flat to conic or columnar, paleate (bearing paleae = receptacle bracts) or epaleate; flowers 1--many per head. Flower: bisexual, unisexual, or sterile, +- small, of several types (see below); calyx 0 or modified into +- persistent pappus of bristles, scales, and/or awns; corolla radial or bilateral (0), lobes generally (0)3--5; stamens 4--5, filaments generally free, generally fused to corolla at tube/throat junction, anthers generally fused into cylinder around style, anther base generally rounded or cordate (deeply sagittate or with tail-like appendages), tip (= flattened appendage) generally projecting beyond pollen sac; pistil 1, 2-carpeled, ovary inferior, 1-chambered, 1-seeded, placenta basal, style 1, tip generally +- 2-branched (except in some staminate disk flowers), branch tips truncate or generally bearing +- brush-like appendages; stigmas 2, generally on adaxial faces of style branches. Fruit: achene (also called a cypsela) (drupe in Chrysanthemoides), cylindric to ovoid, sometimes compressed, generally deciduous with pappus attached.
Genera In Family: +- 1500 genera, 23000 species: worldwide, many habitats. Note: Flower and head types differ in form and sexual condition. A disk flower has a generally radial corolla, with a cylindric tube, expanded throat, and generally 5 lobes. Disk flowers are generally bisexual and fertile but occasionally staminate with reduced ovaries. Discoid heads comprise only disk flowers. A radiant head is a variant of a discoid head, with peripheral disk flower corollas expanded, often bilateral. A ray flower corolla is bilateral, generally with a slender tube and flattened petal-like ray (single lip composed of generally 3 lobes). Ray flowers are generally pistillate or sterile (occasionally lacking styles). Radiate heads have peripheral ray flowers and central disk flowers. Disciform heads superficially resemble discoid heads, with pistillate or sterile flowers that lack rays, together with or separate from disk flowers. A ligulate flower is bisexual, with a bilateral, generally ephemeral corolla and 5-lobed ligule. Liguliflorous heads comprise only ligulate flowers. See glossary p. 31 for illustrations of family characteristics. Echinops sphaerocephalus L., Gaillardia aristata Pursh, Gaillardia pulchella Foug., Hymenothrix loomisii S.F. Blake, Tagetes erecta L., Thelesperma megapotamicum (Spreng.) Kuntze are waifs. Melampodium perfoliatum Kunth, historic urban waif. Ageratum conyzoides L., Guizotia abyssinica (L. f.) Cass., Santolina chamaecyparisus L., orth. var. are rare or uncommon escapes from cultivation. Dyssodia papposa, Ismelia carinata (Schousb.) Sch. Bip. [Chrysanthemum carinatum Schousb.], Mantisalca salmantica (L.) Briq. & Cavill. are historical or extirpated waifs in California. Inula helenium L. not documented in California. Taxa of Aster in TJM (1993) treated here in Almutaster, Doellingeria, Eurybia, Ionactis, Oreostemma, Sericocarpus, Symphyotrichum; Chamomilla in Matricaria; Bahia in Hymenothrix; Cnicus in Centaurea; Conyza in Erigeron and Laennecia; Dugaldia in Hymenoxys; Erechtites in Senecio; Hymenoclea in Ambrosia; Lembertia in Monolopia; Osteospermum ecklonis in Dimorphotheca; Picris echioides in Helminthotheca; Prionopsis in Grindelia; Raillardiopsis in Anisocarpus and Carlquistia; Schkuhria multiflora in Picradeniopsis; Trimorpha in Erigeron; Venidium in Arctotis; Whitneya in Arnica. Amauriopsis in TJM2 (2012) treated here in Hymenothrix; Arida in Leucosyris; Bahia in Picradeniopsis; Eucephalus in Doellingeria.
Unabridged Note: Largest family of vascular plants in California and of eudicots globally.
eFlora Treatment Author: David J. Keil, except as noted
Scientific Editor: David J. Keil, Bruce G. Baldwin.
Genus: MicroserisView DescriptionDichotomous Key

Habit: Annual, perennial herb, generally taprooted; mealy, hairs drying as minute white scales; sap milky. Leaf: basal and cauline, generally linear to lanceolate or oblanceolate, generally variably entire to pinnately lobed. Inflorescence: heads 1 on long peduncle, liguliflorous, +- nodding in bud; involucre generally fusiform to spheric; phyllaries in 2--several series, outer overlapping, inner often +- black-hairy; receptacle flat to low-convex, epaleate, pitted. Flower: 5--many; ligules +- equaling involucre in annual species to much exceeding involucre in per species, white, yellow, or orange, abaxially often +- red or purple, readily withering. Fruit: cylindric to fusiform, generally square-topped, not beaked; ribs +- 10, +- scabrous (outer fruit hairy in some); pappus of generally 5--many +- lanceolate, bristle-tipped scales.
Etymology: (Greek: small chicory) Note: Hybridization common. Self-pollinating (annual) or self-sterile and +- complex (perennial herb).
eFlora Treatment Author: Kenton L. Chambers
Reference: Chambers 2006 FNANM 19:338--346
Species: Microseris douglasiiView Description 

Habit: Annual 5--60 cm, scapose. Leaf: 3--25 cm. Inflorescence: involucre 7--16 mm; outer phyllaries deltate, << inner. Flower: 5--100+; ligule yellow or white. Fruit: gray to brown or +- black, often dark-spotted; outermost fruits generally hairy; pappus scales <= 5, silvery to +- black, often hairy, bristles 1--8 mm, +- strongly barbed. Chromosomes: 2n=18.
Note: Highly variable; subspecies intergrade.
Microseris douglasii (DC.) Sch. Bip. subsp. douglasii
Fruit: 4--10 mm, widest at tip; pappus scales 1--6.5 mm, becoming curved throughout and strongly inrolled, bristles 3--8 mm.
Ecology: Inland clay soils, grassland, often near vernal pools or serpentine outcrops (coastal in southern CCo); Elevation: < 1100 m. Bioregional Distribution: NCoR, CaRF, SNF, Teh, GV, CW, SCo (rare); Distribution Outside California: southern Oregon. Flowering Time: Mar--Jun
Jepson eFlora Author: Kenton L. Chambers
Reference: Chambers 2006 FNANM 19:338--346
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Microseris douglasii subsp. douglasii

botanical illustration including Microseris douglasii subsp. douglasii


Citation for this treatment: Kenton L. Chambers 2012, Microseris douglasii subsp. douglasii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on February 05, 2023.

Citation for the whole project: Jepson Flora Project (eds.) 2023, Jepson eFlora,, accessed on February 05, 2023.

Microseris douglasii subsp. douglasii
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© 2022 Aaron Schusteff
Microseris douglasii subsp. douglasii
click for enlargement
© 2022 Aaron Schusteff
Microseris douglasii subsp. douglasii
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© 2022 Aaron Schusteff
Microseris douglasii subsp. douglasii
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© 2016 Neal Kramer
Microseris douglasii subsp. douglasii
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© 2012 Neal Kramer
Microseris douglasii subsp. douglasii
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© 2013 Neal Kramer

More photos of Microseris douglasii subsp. douglasii in CalPhotos

Geographic subdivisions for Microseris douglasii subsp. douglasii:
NCoR, CaRF, SNF, Teh, GV, CW, SCo (rare)
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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.
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).