Jepson eFlora: Taxon page
Vascular Plants of California
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon

Grindelia stricta var. platyphylla

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: GrindeliaView DescriptionDichotomous Key

Common Name: GUMPLANT
Habit: [Annual] perennial herb to subshrub from taproot or woody caudex, glabrous or tomentose, often glandular-sticky. Leaf: simple, alternate, generally not fleshy, entire, crenate, serrate, or pinnately lobed, gland-dotted. Inflorescence: heads generally radiate (discoid); involucre obconic to hemispheric, generally gummy; phyllaries in 4--10 graduated series; receptacle flat to convex, +- pitted, epaleate. Ray Flower: 0--60; corolla yellow. Disk Flower: corolla yellow; anther tip lanceolate; style-branch appendages linear to lanceolate, generally >= stigmatic portion. Fruit: cylindric or swollen-obconic, shiny-white to +- brown, smooth or ridged, glabrous; pappus of 1--6 narrow awns (occasionally construed as bristle-like) [25--40 bristles], +- < disk corolla, generally entire, deciduous.
Species In Genus: +- 60 species: central and western North America, South America. Etymology: (D.H. Grindel, Latvian botanist, 1776--1836) Note: Variable. Morphologically intermediate plants common where species ranges overlap. Strother & Wetter treated all California species except Grindelia squarrosa and Grindelia fraxinipratensis in Grindelia hirsutula. Grindelia ciliata (Nutt.) Spreng. [Prionopsis ciliata (Nutt.) Nutt.], with pappus of many united bristles (falling as a unit), is an historical waif from northern CCo, northern SCo.
eFlora Treatment Author: Abigail J. Moore
Reference: Strother & Wetter 2006 FNANM 20:424--436
Species: Grindelia strictaView Description 

Habit: Perennial herb or subshrub, branched throughout. Leaf: 1--15 cm; basal present at flower or not, distal not much smaller; blade oblong to lanceolate, +- fleshy, sessile or narrowed at base, glabrous or sparsely tomentose, green or red-veined, serrate. Inflorescence: involucre 10--45 mm diam, hemispheric, glabrous or tomentose, resinous; phyllaries in 4--6 series, bases wide, straw-colored, tips green, erect, reflexed, spreading, or coiled 270--360°. Ray Flower: 16--60; ray 12--25 mm. Fruit: 3.5--7 mm, +- white or gray- to red-brown, top knobby; pappus awns 2--6.

Grindelia stricta var. platyphylla (Greene) M.A. Lane
Habit: Perennial herb 1--10 dm, decumbent to erect, herbaceous or stems proximally woody <= 1 dm. Leaf: generally sessile, sometimes clasping, glabrous or sparsely tomentose, tip acute or rounded. Inflorescence: head often subtended by leaf-like bracts; phyllary tips acuminate, +- round in ×-section, spreading, reflexed, or coiled 270--360°. Ray Flower: generally 20--60; ray 12--20 mm. Fruit: 3.5--5 mm. Chromosomes: 2n=24.
Ecology: Coastal bluffs, dunes; Elevation: < 300 m. Bioregional Distribution: NCo, CCo, SCo, ChI. Flowering Time: All year
Synonyms: Grindelia latifolia Kellogg
Jepson eFlora Author: Abigail J. Moore
Reference: Strother & Wetter 2006 FNANM 20:424--436
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Grindelia stricta var. angustifolia
Next taxon: Grindelia stricta var. stricta

Name Search

Botanical illustration including Grindelia stricta var. platyphylla

botanical illustration including Grindelia stricta var. platyphylla


Citation for this treatment: Abigail J. Moore 2012, Grindelia stricta var. platyphylla, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on September 16, 2021.

Citation for the whole project: Jepson Flora Project (eds.) 2021, Jepson eFlora,, accessed on September 16, 2021.

Grindelia stricta var. platyphylla
click for enlargement
© 2013 Neal Kramer
Grindelia stricta var. platyphylla
click for enlargement
© 2013 Neal Kramer
Grindelia stricta var. platyphylla
click for enlargement
© 2013 Neal Kramer
Grindelia stricta var. platyphylla
click for enlargement
© 2013 Neal Kramer
Grindelia stricta var. platyphylla
click for enlargement
© 2011 Neal Kramer
Grindelia stricta var. platyphylla
click for enlargement
© 2014 Neal Kramer

More photos of Grindelia stricta var. platyphylla in CalPhotos

Geographic subdivisions for Grindelia stricta var. platyphylla:
NCo, CCo, SCo, ChI.
1. You can change the display of the base map and layers by clicking on the layer control box in the upper right-hand corner.
2. California county polygons can be turned off and on in the layer control box.
3. Filling of Jepson subdivision polygons can be turned off and on in the layer control box.
4. Moving the cursor over any numbered cluster will show the range boundary of the included specimens (with a blue polygon).
5. Marker clustering can be turned off by clicking this link:      Marker Clustering OFF
WARNING: Turning this off might cause maps with large numbers of specimens to load slowly.
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).


View elevation by latitude chart

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).